UPDA Electrical/Electronic Engineering Reviewer Material No. 01 PDF

UPDA Electrical/Electronic Engineering Reviewer Material No. 01 1. An alternator is said to be over excited when it is operating at: A. Unity power factor B. Leading power factor C. Lagging power factor D. Lagging to leading power factor 2.A synchronous motor is said to...

UPDA Electrical/Electronic Engineering Reviewer Material No. 01 1. An alternator is said to be over excited when it is operating at: A. Unity power factor B. Leading power factor C. Lagging power factor D. Lagging to leading power factor 2.A synchronous motor is said to be over excited when it is operating at: A. Unity power factor B. Leading power factor C. Lagging power factor D. Lagging to leading power factor 3. A micro antenna is: A. Integrated antenna B. Long Antenna C. Short Antenna 4. What is primary use for fast track scheduling: A. To decrease the cost of construction B. To decrease the cost of professional services C. To avoid future cost increase D. To guarantee project cost prior to the start of building 5. In Harvard Architecture: A. Code and data spaces are merged B. Code and data spaces separated C. Code space is contained in ROM and data space is contained in RAM D. Code space is contained in RAM and data space is contained in ROM 6. The direction of the force acting on a moving charge place in a magnetic field is: A. Perpendicular to the magnetic field B. Opposite to the direction of motion of the charge C. Along the direction of the magnetic field D. Along the direction of motion of the charge 7. The unit of conductance is: A. per ohm B. ohm/m C. mho/m D. mho 8. ABET Stands for Accreditation Board for Engineer and Technology? A. True B. False Page 1 of 18 9. For the circuit shown phase shift of the transfer function V/Vo at very high frequencies is: A. 90° B. 0° C. -90° D. -180° 10. The third harmonic of the Fourier series for the waveform in the figure has a frequency (Hz) of: A. 250 B. 750 C. 4712 D. The third harmonic does not exist. 11. The wire placed on the top of a transmission line is a: A. Phase wire B. Neutral wire C. Transmission wire D. Ground wire 12. Consider the three-stages r-f amplifier shown below ARI refers to the input amplifier stage. AR2 to the second stage, AR2 to the second stage and AR3 to the output stage. For this amplifier configuration the total noise figure (DB) is most nearly: A. 6.6 B. 8.6 C. 10.5 D. 12.3 Page 2 of 18 13. Of the following engineering disciplines, who would be BEST suited to design and operate an automobile factory? A. Petroleum Engineer B. Mechanical Engineer C. Civil Engineer D. Chemical Engineer 14. Which of the following describes the leakage flux flux? A. A flux outside the core B. Flux linking the primary C. Flux linking the secondary D. Flux other than the mutual flux 15. Fast Tracking in Project means? A. Start the project before the design complete B. Fixed cost-plus fee C. None 16. We have three resistance of values 2 , 3 , 6. Which of the following combination will give an effective resistance of 4 ? A. All the three resistance in parallel B. 2 resistance in series with parallel combination of 3 and 6 resistance C. 3 resistance in series with parallel combination of 2 and 6 resistance 17. This question investigates the performance of the temperature sensor shown below. The temperature sensor is linear with the following circuit voltages: Vs = 0 mV at 0°C Vo = 100 mV at 100°C The operation amplifier (op amp) is ideal. At 100°C, the maximum output voltage at Vo/Vs due to the tolerances in Rz is most nearly: A. 2.5 B. 5.2 C. 7.4 D. 10.1 Page 3 of 18 18. The condition for successful parallel operation of transformer is: A. Correct polarity B. Per unit impedance based on their rating should be equal C. Identical voltage and frequency rating D. Equal ratio of equivalent resistance to reactance E. All of these 19. The output of a NOR gate is HIGH if ____________. A. all inputs are HIGH B. any input is HIGH C. any input is LOW D. all inputs are LOW 20. Digital telecommunication equipment provides connection oriented AND/OR connection less service, connection-oriented service is provided by: A. ATM B. ETHERNET C. FDDI D. SMDS 21. Commercial AM Modulation technique is: A. DSB-SC B. DSB-LC C. QAM D. SVAM 22. For last switching of an NMOS R R-pull up inverter (W/L) should be: A. Large B. Small C. Equal to the drain current D. Equal to the power dissipated during switching 23. -time operating system. At a minimum a kernel should provide: A. Task management, file management, memory management B. Task scheduling, task dispatching, file management C. Inter-task communication, task dispatching, memory allocation D. Task scheduling, task dispatching, inter-task communication. 24. A certain communication signal uses a bandwidth BW of 2kHz. What is the classification of this signal? A. Voice grade VHF B. Narrowband VLF C. Voice grade HF D. Wide band UHF Page 4 of 18 25. In an induction motor, no load the slip is generally: A. less than 1% B. 1.5% C. 2% D. 4% 26. Minimum voltage regulation occurs when the power factor of the load is: A. unity B. lagging C. leading D. zero 27. In medium sized induction motors, the slip is generally around: A. 0.04% B. 0.4% C. 4% D. 14% 28. The manufacturing company gets materials from 2 suppliers X & Y. If X delays the procurement of materials by 2 days and company take 10 days to obtain the material, what shall be the delays (days) for product completion? A. 0 B. 1 C. 2 D. 3 29. If an alternator is over excited: A. PF is lagging B. PF is leading C. Is Unity D. Is zero Rejection of Noise 30. The input impedance of cascade amplifier will: A. Same as input impedance of first B. Same as output of second C. Same as the entire circuit D. Same as stage before the last stage Page 5 of 18 31. Rotor of Induction motor is rotating at synchronous speed. What is Torque? A. High B. Low C. Zero D. Infinity 32. What does the power factor stand for? A. Cosine of the angle between the voltage and current B. Sine of the angle between the voltage and current C. Tangent of the angle between the voltage and current D. Cotangent of the angle between the voltage and current 33. What is the minimum gauge size of the earthing cable? A. 20 B. 16 C. 10 D. 8 34. To get rid of DC offset use? A. Low pass filter B. High pass filter C. Band pass filter D. Stop band pass filter 35. For forward biasing: A. Anode 3V cathode 7V B. Anode 5V cathode 3V C. Anode 7V cathode 10V 36. Transformer resistivity: A. High voltage higher than low voltage B. High voltage lower than low voltage C. High voltage equal to low voltage 37. Amplifier working with good gain in: A. Reverse region B. Cutoff region C. Active region D. Saturated region 38. What is MOSFET? A. Transistor B. Thyristor C. Amplifier Page 6 of 18 39. To minimize loading effect use? A. Resistance B. Capacitors C. Inductors 40. Alternator connected on no load condition, what affect the efficiency? A. Speed B. Voltage C. Armature losses 41. Transformer saturation: A. High efficiency, low no load losses B. Low efficiency, low no load losses C. Low efficiency, high no load losses D. High efficiency, high no load losses 42. What will be the output impedance of cascade amplifier to minimizes the loading effect? A. High B. Low C. Intermediate D. No effect 43. Uninterruptible Power System has to be connected to the network by: A. Series to feed electrical power at normal time B. Parallel to feed electrical power at normal time C. Series to feed electrical power at critical time D. Parallel to feed electrical power at critical time 44. What is the purpose for the neutral line at the 3-phase power system? A. As return path for the normal current B. As return path for the normal voltage C. As return path for fault current D. As return path for fault voltage 45. An engineer received new scope of work which is not included at the original scope, what the action he has to do? A. Accept the scope and start for supplying the materials B. He has to inform his boss first C. Refuse to receive the new scope 46. An active filter will: A. Amplify B. Filter and Amplify C. Amplify/Filter/Modulate Page 7 of 18 47. Embedded system should have best: A. Dynamic response B. Static response C. No response 48. If gain of amplifier is 10 and having negative feedback of 9%. What will be the gain if feedback is remove? A. 10 B. 90 C. 100 D. 1.2 49. Humming of transformer is due to: A. Vibration of winding coil B. Vibration of brushes C. Vibration of laminated core 50. I = 5 Cos wt + 2 Cos wt, R=3 Ohms, Find the wattage: A. 44 Irms = ((Idc2 + (Im12+Im22+---------+Imn2/2))0.5 =((52+42)/2)0.5 = 3.807A B. 78 P = 3.8072 * 3 = 43.48 W C. 147 51. A 1000m cable is terminated with a short circuit at the far end. The first reflected wave appears 9.43µs after the incident wave. The actual velocity in the cable divided by the speed of light is: Vp = 2L/To A. 0.35 B. 0.71 C. 1.0 D. 1.41 52. High voltage winding of transformer has ________ resistivity than the low voltage side. A. Lower B. Higher C. Equal D. Lower or Equal 53. Three 30µF capacitors are connected in star (Y) form between the terminals A, B, C and a junction point N as shown in the figure, the capacitance (µF) between terminals A and B is most nearly: A. 2/30 B. 15 C. 30 D. 60 54. The output D in the circuit is: Page 8 of 18  A. B(A+C) B. (A+B) (B+C) C. AB + BC D. (A+B) CB 55. Power consumption in the advanced embedded system is: A. 10% B. 50% C. 80% D. None of the above 56. Calculate the Vout: A. 1.1V B. 2.2V C. 4.3V D. 5V 57. Harmonics in a system is mainly due to: A. Variable Impedance Load B. Saturated Magnetic Load C. Power Electronics Load D. All of the above 58. Main objective of transmission system: A. Reliability B. Voltage regulation C. Power factor D. Efficiency 59. Which of the following parallel resistance will have the highest value of the equivalent resistance? Page 9 of 18  A. 10 kOhm and 25kOhm B. 1 kOhm, 2 kOhm and 3 kOhm C. Two 500 kOhm resistors D. Four 40 kOhm and two 10kOhm resistors 60. In the receiver of a wireless system, we must amplify the received signal using: A. A power amplifier B. A differential amplifier C. An active filter D. A low-noise amplifier 61. An overcurrent relay is used to protect a circuit with a maximum 3-phase fault current of 8000A. Primary A 400:5 current transformer ratio and a 5A relay tap setting are selected. If the total secondary burden on the current transformer for the maximum fault condition is 1:10 , the excitation voltage (V) that must be developed by the current transformer is most nearly: A. 100 Excitation Voltage (V) = Is*(Rs+Rb),Is = 8000*(5/400) = 100 A,Rs =SecondaryR of 400/5 CT=0.2 B. 110 Rb = 1 ohm, V = 100 (1+0.2) = 120V C. 115 D. 120 62. In the 3-phase system, the neutral is: A. Normal return path for the current B. Abnormal return path for the current C. A and B D. None of the above 63. Which circuit breaker is used at distribution level? A. Air circuit breaker B. Air blast circuit breaker 64. Open circuit test on transformer is conducted to obtain: A. Ohmic loss only B. Hysteresis loss only C. Eddy current loss only D. Core loss only 65. The electric flux passing out through a closed surface is equal to: A. The line integral of the surface B. Zero C. The flux density at the surface D. The total charge enclosed by the surface E. The net surface integral of the current Page 10 of 18 66. The output is to be maintained at 24V, while the input varies from 120V to 126V with a load current ranging from 0A to 5A. Assume ideal conditions, that is the keep alive current is zero and the Zener resistance RZ is negligible: What is the minimum power of the supply resistor? A. 400 B. 450 C. 500 D. 550 67. On the question above, what is the minimum diode power rating that can be used? A. 100 B. 150 C. 500 D. 600 68. On the question above, what is the required supply resistance to ensure proper operation of the Zener regulator circuit? A. 19 B. 22 C. 24 D. 25 69. On the question above, what is the Maximum Zener current? A. 4.1 Amps B. 4.3 Amps C. 5.1 Amps D. 5.3 Amps 70. Find the total float of activity D for the project: A. 1 B. 3 C. 9 D. 2 Page 11 of 18 71. The self-discharge rate of a lead-acid battery is least dependent on which of the following factors? A. concentration (specific gravity) of electrolyte B. age of battery C. temperature D. nominal voltage of battery 72. The minimum standard wire gauge of earth wire is: A. 20 SWG B. 16 SWG C. 10 SWG D. 8 SWG 73. The unit of current is: A. Ampere B. Watt C. Volt D. _________ (Any other write here) 74. The most economical method of starting a single-phase motor is: A. Split-phase method B. Resistance start method C. Inductance start method D. Capacitance start method 75. In the circuit shown, which resistor(s) is (are) redundant? A. R1 only B. R1 and R4 C. None 76. A copper cable used in a plain old telephone service line has a loss of 1.5 dB/km. What is the approximate loss experienced if the user is located 1.5km from a central office? A. 1.5 dB B. 15 dB C. 20 dB D. 220 dB Page 12 of 18 77. A lossy transmission line is used to connect a transmitter to an antenna. If the VSWR measured at the antenna end of the transmission line is 1.5, which of the following statement is correct? A. The VSWR measured at transmitter end of the transmission line is smaller than 1.5 B. The VSWR measured at transmitter end of the transmission line is greater than 1.5 C. The VSWR measured at transmitter end of the transmission line is equal to 1.5 D. The characteristic impedance of the antenna matches exactly the character impedance as the transmission line 78. Which of the following characteristics is not typical of a project manager: A. Managing a temporary activity B. Possesses in depth technical knowledge C. Managing a non-repetitive activity D. Manages independently of the formal organization 79. The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be: A. 10 B. 1.25 C. 100 D. 90 80. A de current of 50A is flowing in an isolated wire. The magnitude of the magnetic field intensity, H (A/m), 10cm from the center of the wire is: H= I/2 r A. 0.05 B. 8 C. 43 D. 80 81. Which type of braking is used in an induction motor: A. Regenerative B. Dynamic C. Plugging D. All of the above 82. What is the common or usual method to ensure that the final set of construction documents satisfy the clients program and design goals? A. Make a checklist program requirement for the staff working on the project of use to continuously monitor their progress as they prepare the drawings. B. Have the client review a final check set for compliance with the program requirements and request that any corrections be noted. C. Have another architect who is unfamiliar with the project review the final set for compliance with the original program requirement. D. Hold regular progress meetings with the client and staff involved to compare the current status of the drawings with the original program requirements. At the conclusion of this phase, require that the client provide the architect with written approval to proceed to the next phase. Page 13 of 18 83. In a cascade amplifier, to reduce the loading effect at the output, the output impedance of the last stage should be: A. Very high B. Intermediate C. Very small 84. In a cascade amplifier, to reduce the loading effect at the input, the input impedance of first stage should be: A. Very high B. Intermediate C. Very small 85. In which of the following circuit will the voltage source produce the most current: A. 10 Volt across a 10 Ohm Resistance B. 10 Volt across two 10 Ohm Resistance in Series C. 10 Voltage across two 10 Ohm resistance in parallel D. 1000 V across 1 MOhm resistance 86. Which of the following theorem is used for frequency? A. Kirchhoff B. Muller C. Shannon Theorem 87. The main cause of transformer humming is: A. Vibrations in the insulating and cooling oil B. Vibrations in the core lamination C. Vibration in the bushes D. None of the above 88. If the induction motor speed at no-load is 745 RPM, what is the speed of the motor? A. 700 RPM B. 750 RPM C. 800 RPM D. 850 RPM 89. Synchronous speed for motor 1600 RPM, 60hz, Calculate number of poles. A. P = 2 B. P = 4 C. P = 6 90. At what region of operation is the base emitter junction forward biased and the based collector junction reverse biased for BJT? A. Saturation B. Linear or active C. Cut-off D. None of the above Page 14 of 18 91. What is the role of the Zener diode? A. Rectification B. Voltage regulation C. Amplification 92. The heat loss inside a straight conductor is 60J upon applying current I for 5s. If the resistance of the conductor is decrease to half, and the same current is applied for 5s, what will be the heat dissipation? A. 60J B. 30J C. 15J D. 120J 93. Why we use power factor correction device to: A. Mitigate PF B. Increase PF C. Getting PF D. None of the above 94. Rotor of induction motor is rotating at synchronous speed, what is torque? A. High B. Low C. Zero D. Infinity 95. The underground cable is laid in a marine environment at system voltage A. What shall be the design of the cable insulation? A. B. C. D. 2 A 96. Cable length is 1000m, time of returning signal is 9.43µsec. What is the speed of wave in the cable? A. 0.35 B. 0.75 C. 1 D. 2.1 97. An antenna has an effective aperture of 10m². What additional information is required to determine the amplifier power? A. Power density B. Power loss C. Space loss D. Total aperture Page 15 of 18 98. 10HP Single phase motor, 0.8 PF, 240V, Efficiency = 0.6, What is the current? Hint: Pout = n V I cos Ø A. 70 A B. 52.5 A C. 64.76 A D. 90 A 99. Which of the following is not opportunity to do the project? A. Demand of the product B. Emerging markets C. Lot of Manpower D. Favorable exchange rated E. None of these are Organizational opportunities 100.For the shown block diagram, what is the dumping ratio O/P / I/P = U/R where S = 1? A. 0.4 B. 0.63 C. 0.7 D. 2.82 101. An alternator is operating at __________ for capacitive loads. A. Lagging power factor B. Unity power factor C. Leading power factor D. None of the above 102. The activity on node networks shown below describes a project consisting of 8 task A-H. Each node indicates duration in weeks relationship are finish-to-start. The minimum time to complete the project is: A. 15 weeks B. 16 weeks C. 17 weeks D. 18 weeks 103. A super heterodyne AM receiver within an intermediate frequency (IF) of 455 kHz is to be turned to listen to a station at 540 kHz. What tuning frequency is used in the local oscillator? A. 96 kHz B. 540 kHz C. 550 kHz D. 995 kHz Page 16 of 18 104. For which of the following topologies can 10BaseT not be used without additional hardware conversion? A. Star B. Tree C. Point to Point D. Bus 105. High voltage windings of transformer have _________ resistivity than the low voltage side. A. Lower B. Higher C. Equal D. Lower or Equal 106.ACR of conductor have 7 steel wires and 25 aluminum wires can be specified as: A. 7/25 B. 7/32 C. 32/7 D. 25/7 107. The output D in the circuit is: A. B(A+C) B. (A+B) (B+C) C. AB + BC D. (A+B) CB 108.Cable length is 1000m, time of returning signal is 9.43µsec what is speed of wave in the cable? A. 0.35 B. 0.75 C. 1 D. 2.1 109.The equivalent circuit of induction machine at no load is the same as that of the transformer but with A. Open circuited secondary B. Short circuited secondary C. Open circuited primary D. Short circuited primary 110. Which of these is not a rule of interaction? A. Law B. Etiquette C. Morals D. Communication E. Ethics Page 17 of 18 111. Within the battery, conventional current flow is A. Anion to Cation C. Positive electrode to Negative electrode B. Cation to Anion D. Anode to Cathode 112. Activity on arrow needs to use dummy activities to avoid precedence problem that can happen due to: A. Parallel Activities D. Burst Activities B. Critical Path Activities E. Independent Activities C. Merge Activities F. None of the above 113. What is the average value of signal v(t) = 5 sin377t A. 2.8 D. 3.8 B. 3.2 Vavg = 5 * 0.636 = 3.2V C. 3.5 114. A 3 phase transformer, 25MVA, 66-12.47kV, delta-wye connected, 8 percent impedance. On the 100 MVA, per unit impedance is most nearly A. 0.08 D. 0.32 B. 0.16 Zpu = Zpuold * (MVAnew/MVAold) = 0.08 * (100/25) = 0.32 C. 0.24 115. and the voltage Range 0-100V. What type and magnitude of resistance required? Hint: 1/Ifs = (Rext+Rcoil ) / Vfs A. Parallel, 1M ohm B. Parallel, 1K ohm C. Series, 1M ohm D. Series, 1K ohm 116. The offset of a particular segment varies from A. 000H to FFFH B. 0000H to FFFFH C. 00H to FFH D. 00000H to FFFFFH 117. The power gain of 30dB is equivalent to which amplification factor A. 0.001 B. 1/30 dB=10logx, 30= 10 logx, logx= 30/10 = 3, x=103 = 1000 C. 30 D. 1000 P1 [dB] = 10log (Power) P2 Page 18 of 18 UPDA Electrical/Electronic Engineering Reviewer Material No. 02 1. The power factor of an alternator depends on: A. Speed of the rotor B. Core losses in the machine C. Load connected to the machine D. Armature losses to the machine 2. Fluorescent light flickers due to: A. High voltage B. Low Voltage C. High frequency D. Low frequency 3. Which of the following theorem is used for frequency? A. Kirchhoff B. Muller C. Shannon Theorem 4. Which of the following can represent an activity on a project network? A. An arrow B. A line C. A node D. Both A & C are correct E. A, B, C are all correct F. All are incorrect 5. The Accreditation Board for Engineer and Technology (ABET) is an accrediting agency for: A. An engineering education program B. Engineering fundamentals examination C. Engineering firms D. All of the above 6. A cyclic redundancy check (CRC) generator is based on what operation? A. Exclusive OR B. Modulo 2 Division C. Bit wise add with carry D. Two’s complement addition 7. First step of scope planning starts with: A. Budgeting B. Current earning estimations C. Objective and requirements to satisfy customer Page 1 of 22 8. The term Fast Track means: A. Design/Build B. Construction starts before the design is complete C. Cost plus fixed free D. None of these above 9. In the figure: A. 6Ω, 3Ω and 9Ω are in series B. 9Ω and 6Ω in parallel and the combination in series with 3Ω C. 6Ω, 3Ω and 9Ω are in parallel D. 3Ω and 6Ω in parallel and the 9Ω series with 10. Cascade amplifier is used to reduced load effect; the output impedance will be: A. High B. Low C. Medium D. Zero 11. Output of Cascade amplifier is: A. Output of the first stage B. Output of the last stage C. Output of the stage before last stage D. None of the above 12. The CPU architecture shown in the figure below is best described as: A. Non-pipelined architecture B. 1-Stage pipeline architecture C. 2-Stage pipeline architecture D. Harvard architecture Page 2 of 22 13. Incandescent lamp will work normally with best efficiency at the power factor is: A. Unity B. 0.5 lagging C. 0.5 leading D. 0.8 leading 14. HRC Fuse means High Rupturing Capacity? A. True B. False 15. System means group of elements making a function? A. True B. False 16. A certain communication channel has a signal to noise ratio of 7 and a bandwidth of 10kHz. What is the channel capacity? A. 30 bps B. 80 bps Channel capacity = BW* log2(1+S/N) = 10000 * log2(1+7) = 30000bps C. 300 bps D. 30000 bps 17. Software maintenance activities can be classified into several maintenance types. Which of the following is not a software maintenance type? A. Adaptive maintenance B. Corrective maintenance C. Customer-initiated maintenance D. Perfective maintenance 18. An industrial plant is served by a 12470-v delta/480-v grounded-wye transformer. The high voltage side of the transformer is served from a 12470-v wye-connected distribution line that has a grounded neutral. The best protection of the transformer against lightning strikes on the 12470-v line will result from surge arrester connection of: A. Phase to ground on the 12470-v side of the transformer B. Phase to phase on the 12470-v side of the transformer C. Phase to ground on the 480-v side of the transformer D. Phase to neutral to ground on the 480-v side of the transformer 19. The primary difference between a programmable logic array designated 16R8 and one designated 20 R8 is that the 20 R8 has: A. Four additional flip flops B. Four additional input pins C. Four additional in/out pins D. 20 pins rather than 16 Page 3 of 22  20. What type of bond guarantees that if a contractor goes broke on a project, the surety will pay the necessary amount to complete the job? A. Bid bond B. Performance bond C. Acceptance bond D. Payment Bond 21. The one-line diagram below represents three single phase transformers connected in a delta-wye arrangement and rated for the line to line voltages indicated. The turns ratio of individual single-phase transformer is mostly nearly: A. 2.8 B. 4.8 C. 8.3 D. 14.4 T R = Vph (Delta) / Vph (star) = 115 / 24 = 115 / 24 = 4.8 Star-Delta Turns Ratio Likewise, for a delta–star ( Dy ) connected transformer, with a 1:1 turns ratio, the transformer will provide a 1:√3 step-up line-voltage ratio. Then for a delta-star connected transformer the turns ratio becomes: Delta-Star Turns Ratio 22. An engineer chooses open collector output TTL technology to provide sufficient current to drive a device. The circuit shown is implemented with a 7405 package and corresponds to the following logic function (assume that a logic 0 corresponds to 0V). A. AND B. NAND C. OR D. NOR Page 4 of 22 23. Which of the following junction nodes are forward biased? A. Anode = +7V, Cathode = +10V B. Anode = +5V, Cathode = +3V C. Anode = +0.3V, Cathode = +5V 24. Which of the following best describes the sequential steps in an Object-Oriented design? A. Define classes, define interface techniques, define collaboration diagrams, define design diagrams B. Define use case, define programming language, define interface techniques, define class C. Define programming language, define class models, define design class diagrams, define collaboration diagram D. Define use case, define conceptual model, define collaboration diagrams, define design class 25. Increasing the current withdrawn from a battery has what effect on the battery capacity and why? A. Increased capacity, which is caused by less internal heat loss B. Increased capacity, which is caused by lower internal resistance C. Decreased capacity, which is caused by higher load voltage drop D. Decreased capacity, which is caused by increased polarization 26. The only load on a 3-phase, 4-wire system is placed between phase B and phase C. The phase to phase voltage is 13.2kV. The load is 500kVA at 0.85 lagging power factor. The magnitude of the line current (amperes) in phase C is most nearly: A. 65.6 B. 55.8 I = KVA / KV = 500 / 13.2 = 37.9 C. 37.9 D. 32.2 27. A BJT is used to amplify in: A. the space charge region B. the active region C. the saturation region D. the ohmic region 28. An over excited alternator is operating at: A. lagging power factor B. unity power factor C. leading power factor 29. Which of the following statements best describe show a power transformer’s total losses vary with kVA load? A. Losses are linearly proportional to load B. Losses are proportional to the square root of the load C. Losses are proportional to the square of the load D. Losses are proportional to the square of the load plus a constant 30. A power plant uses a turbine-driven synchronous generator rated 3-phase, 150MVA, 13.8kV, 0.85 lagging power factor. All the rated conditions the power output (MW) is most nearly: A. 60 Page 5 of 22  B. 75 Power output (MW) = MVA * cosθ = 150*0.8 =128MW C. 125 D. 128 31. The main cause for transformer humming is: A. Vibrations in the insulating and cooling oil B. Vibration in the core lamination C. Vibration in the bushes D. None of the above 32. A synchronous motor working on a leading power factor but not driving any mechanical load is known as: A. Universal motor B. Reluctance motor C. Synchronous condenser D. None of the above 33. Field programmable gate arrays (FPGAs) and other array logic devices normally contain numerous flip- flops. These flip-flops are generally or the type: A. D B. J-K C. S-R D. T 34. The minimum standard wire gauge of earth wire is: A. 20 SWG B. 16 SWG C. 10 SWG D. 8 SWG 35. With respect to relational record-based data models at the user level, a relation is represented in a: A. Key B. List C. Queue D. Table 36. Which of the following choices is not one of the stages of a project life cycle? A. Concept B. Initiation C. Planning D. Execution E. Delivery/Closure 37. Out of the following which is the best example of a project? A. Claiming insurance B. Automobile industry Page 6 of 22  C. Studying till getting graduate degree 38. For the 4-wire RTD circuit shown, which of the following would case the greatest measurement error in Vsense? A. Increase lead A resistance by 2 B. Increase lead B resistance by 3 C. Increase lead D resistance by 3 D. Current source/has a 1% error 39. Which of the following parallel resistances will have the highest value of equivalent resistance? A. 10 kohm and 25 kohm B. 1 kohm, 2 kohm and 3 kohm C. Two 500 kohm resistors D. Four 40 kohm and two 10kohm resistors 40. 100 resistors of 100 ohm each connected in parallel. What is the equivalent resistance? A. 1000 ohm B. 1 ohm C. 1/1000 ohms D. 100 ohms 41. A 3-phase capacitor rated at 240V and 110 kVAR has been proposed for correcting the power factor of a 3-phase induction motor operating at 280 V, the reactive power (kVAR) that will be provided by the capacitor is most nearly: A. 82.6 B. 95.3 Reactive power = (kVArated/kVAoperated)2*kVARold= (240/280)2*110 = 82.6 C. 110 D. 127 42. A series of fuel cells is connected to produce a no-load voltage of 230V at a rated voltage of 300V, the cells provide 2.0MW to a DC-AC converter. Assuming the cell van be modeled as a standard battery, what is the total internal resistance of the fuel cells: Hint: (P=V²RL), (P=I²RL) A. 0.0001 B. 0.003 C. 0.05 D. 3 Page 7 of 22 43. Permanent magnet has a relative permeability that is _________ magnetic material: A. Higher than B. Lower than C. Equal to D. Not Equal to 44. For effective earthling, which of the following mixture is preferred for filling around the earth electrode? A. Lime-Sand mixture B. Saw Dust – Sand mixture C. Bone Meal mixture D. Coal-Salt mixture 45. A discrete silicon semiconductor diode is forward biased at 0.75V, what is the approximate current? Hint: VT = Kt/V, I = I0 (e(qV/kT) – 1) A. 2.0 mA B. 3.0 nA For germanium I = I0*(e40v-1) C. 1.5A For silicon: I = I0*(e20v-1), Io=dark saturation current = 611*10-12 D. 3.0 mA 46. For last switching of an NMOS R-pull up inverter (W/L) should be: A. Large B. Small C. Equal to the drain current D. Equal to the power dissipated during switching 47. The voltage regulation of an alternator is ___________ for capacitive loads. A. Positive B. Negative C. Zero D. All of the above 48. The first step of project scope definition is to: A. Analyze the strategic plan B. Analyze the current budget plan C. Meet with team members D. Select team members E. Define the major objectives to meet the customer needs 49. While machine in operation, the slip of the synchronous machine is: A. High B. Low C. Zero D. 1 50. If the induction motor speed at no-load is 745 RPM, what is the speed of the motor? A. 700 RPM Page 8 of 22  B. 750 RPM C. 800 RPM D. 850 RPM 51. Synchronous speed for motor 1600 RPM, 60hz, Calculate number of poles. A. P = 2 B. P = 4 C. P = 6 52. BJT will act as a switch in which region: A. Ohmic region B. Saturation region C. Active region D. Passive region 53. What is pipe-lining? A. Latency B. Throughput C. Both 54. A room with a floor area of 50ft x 30ft and a ceiling height of 10ft has luminaries suspended 2ft from the ceiling. Assuming a working plane of 30in and a required illumination level of 50fc, the net luminous flux (lumens) using fixtures with a coefficient of utilization of 0.78 is most nearly: A. 48000 E*A/utilization factor = 50*30*50 / 0.78 = 96000 B. 58000 C. 75000 D. 96000 55. A motor is equipped with an optical shaft encoder to measure motor speed. The optical encoder provides 200 pulses per motor revolution. A microcontroller equipped with a real-time interrupt (RTI) capability is used to measure motor speed. The RTI interval is 32.768ms. The microcontroller counts 372 pulses from the optical encoder in the RTI interval. The speed (rpm) of the motor is: A. 33 372/200/32.768*1000*60 = 3400 B. 568 C. 3276 D. 3400 56. BJT will amplify in which region? A. Ohmic Region B. Active Region C. Saturation Region D. Passive Region 57. Which of the following related to observation in a measuring instrument: A. Accuracy B. Precision C. Reproducibility Page 9 of 22 58. A digital signal needs to be modulated and transmitted. If we need to transmit 4 bits, what is the maximum number of ways it can be transmitted? A. 2 B. 4 C. 8 24 = 16 D. 16 59. When using Zener Diode in regulator circuits, the output shape will be affected by: A. Dynamic resistance of the diode B. Input current passing through the diode C. Zener Voltage 60. The motor used in travelling crane is: A. Ward Leonard Controlled DC Shunt Motor B. Slip Ring AC Induction Motor C. AC Split Motor D. DC Differentially Compound Motor 61. Which of the following is not the transmission voltage in Qatar? A. 66kV B. 132kV C. 220kV D. 400kV 62. Which of the transmission voltage is not applied in Qatar Electrical Specifications? A. 66kV B. 132kV C. 220kV D. 400kV 63. An important step in the software lifecycle is testing. One type of testing is integration testing. Which of the following is not true concerning integration test? A. Integration testing is employed to integrate separately tested pieces. B. In a top-down integration test, testing begins at the top levels to see whether the overall logical design works and the interfaces between modules are correct. C. In a bottom up integration test, testing begins first at the lowest level sub-programs. A test driver is used to set-up the testing environment by declaring and assigning initial values to variables and then calls the sub-program to be tested. D. In integration testing, either a top-down or a bottom-up approach is selected to complete the test. 64. The forward pass in project network calculation determines the: A. Earliest time’s activities can begin B. Earliest time’s activities can be finished C. Duration of the project D. Critical path of the project Page 10 of 22  E. Only A & B are correct F. A, B and C are all correct 65. The single-phase motor generally used with household ceiling fans is: A. Split phase type B. Capacitor start type C. Permanent Capacitor type D. None of the above 66. The source voltage in the circuit shown is v= 100sin 377t, the peak reverse voltage applied to the diode would be: A. 2.5 B. 100 C. 141.1 D. 31.8 67. All of the following are properties of fuses rather than circuit breakers, with one exception, which item is the property of circuit breakers? A. Adjustable time-current characteristics B. Low initial costs C. Longer downtime over operation D. Simplify 68. A phase, 3-wire ungrounded, 13.2kV (phase-to-phase) wye-connected source is connected to a balanced delta load that is grounded on corner A. The voltage measured between Corner Band ground is most nearly: A. Half the Phase-to-phase voltage B. 7.62 kV C. 13.2 kV D. cannot be determined 69. The only load on a 3-phase, 4-wire system is placed between phase B and phase C. The phase-to-phase voltage is 13.2kV. The load is 500 kVA at 0.85 lagging power factor. The magnitude of the line current (ampere) in phase C is most nearly: A. 65.6 B. 55.8 C. 37.9 D. 32.2 70. Which one is the harmonic source in the following list? A. Variable impedance loads B. Saturable magnetic loads C. Power electronic based loads D. All of the above Page 11 of 22 71. A low-pass filter is used to: A. Stop low frequencies B. Pass a band of frequencies C. Stop high frequencies D. Stop a band of frequencies 72. A 3-phase, 60-Hz induction motor has a nameplate speed of 1600 rpm. This motor has how many poles: A. 2.0 B. 4.0 C. 6.0 D. 8.0 73. Which of the following is a name for a set of indices and values? A. Array B. Stack C. Queue D. FIFO 74. Your boss has just approved the initiation of a project to celebrate Qatar National Day. Sadia has been assigned the project manager as should be: A. Establish the reporting process to the boss B. Work on the project scope C. Make a report on required cost for the project D. Develop the project charter to do the project E. Ask the boss as to how many team members would be allowed in the project 75. The spinning reserve is the: A. Generating capacity that is connected to the grid and ready to take the load B. Generating capacity that is available for service but not in operation C. Generating capacity under maintenance D. None of the above 76. Two resistances R1 and R2 give combined resistance of 4.5 ohms when in series and 1 ohm when in parallel. The resistances are: A. 3 ohms and 6 ohms B. 3 ohms and 9 ohms C. 1.5 ohms and 3 ohms D. 1.5 ohms and 0.5 ohms 77. An underground system is built for a military marine system with a normal voltage level. A following fault analysis design the insulation is most nearly the voltage level for which the insulation on the distribution system is designed? A. (1 / √3) A B. √3) A C. √2) A D. 2A Page 12 of 22 78. The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be: A. 10 B. 1.25 C. 100 D. 90 79. Block plot shown below, what type? A. High pass filter B. Low pass filter C. Band pass filter D. Band stop filter 80. Terminal represents control input of BJT: A. Emitter B. Base C. Collector 81. The minimum standard wire gauge of earth wire is: A. 20 SWG B. 16 SWG C. 10 SWG D. 8 SWG 82. An activity in a project network can be represented by which of the following? A. Arrow B. Line C. Node D. All of the above 83. Harmonics in a system is mainly due to: A. Variable Imp Load B. Saturated Magnetic Load C. Power Electronics Load D. All of the above 84. What is analysis technique to determine effect of multi-sources? A. Kirchhoff Law B. Shannon Law C. Miller Law Page 13 of 22  D. Superposition 85. What is meant by Ethics? A. Codes of behavior and courtesy. B. General and abstract concept of right and wrong behavior culled from philosophy, theology, professional societies. C. A system of rules established by authority, society or custom where violation carry penalties. D. Accepted standards of right and wrong applied to personal behavior driven by religious and or family and environment background. 86. Referring to the figure the voltage V across till: 50-U resistor is: A. 35 B. 51 C. 71 D. 92 Z = (R2+(Xl2-Xc2))0.5 87. The collector region of transistor is doped? A. Heavily B. Moderately C. Lightly 88. A transmitter operating at 23.6GHz has a power output of 20nW. A receiver is located 8miles from the transmitter (dB) is: A. 142 B. 124 C. 119 D. 115 89. First line in Transmission is used for? A. Ground B. R-Phase C. B-Phase D. Neutral 90. In HDL Based digital systems the arithmetic multiplication function is difficult to synthesize. Design solution to this challenge do not include: A. Sequential generation of partial products B. Hardware intensive simultaneous generation of partial products C. Implementation of booths algorithm to minimize generation of partial products D. Sequential right shifts of the arguments 91. An OP-AMP based inverting amplifier; the INPUT impedance is: A. Zero Page 14 of 22  B. Infinity C. Equal to the feedback resistance D. Equal to the resistance connected 92. An OP-AMP based Non-inverting amplifier; the INPUT impedance is: A. Zero B. Infinity C. Equal to the feedback resistance D. Equal to the resistance connected 93. An OP-AMP based inverting amplifier; the OUTPUT impedance is: A. Zero B. Infinity C. Equal to the feedback resistance D. Equal to the resistance connected 94. An OP-AMP based Non-inverting amplifier; the OUTPUT impedance is: A. Zero B. Infinity C. Equal to the feedback resistance D. Equal to the resistance connected 95. An OP-AMP based Non-inverting amplifier; the OUTPUT resistance is: A. Zero B. Infinity C. Relative forward resistance D. Same as the input resistance 96. Which circuit breaker in commonly used in the distribution level? A. Air Circuit Breaker B. Air Blast Circuit Breaker C. SF6 Circuit Breaker D. Tank Type Oil Circuit Breaker 97. In general, when comparing BJT and MOSFET transistors, three main differences: A. The device that depends more on geometry (width, Length, etc.) is BJT B. The device is capable of higher amplification is MOSFET C. The device that dissipates no power at the input (zero input current) is MOSFET 98. Which one of the engineering characteristics can best explain the following concept? Base your decision on reason rather than emotion. A. Quantitative Thinking B. Interpersonal Skill Page 15 of 22  C. Honesty D. Logical Thinking 99. Which of the following characteristics of a data network is never a correct of a packet switched network? A. A transmitted packet contains source and destination address coding, information, and error control bits B. Individual packets of a long message can be routed under different paths by the switching exchange equipment C. The address coding is transparent to a user. D. A transmitted packet contains only information bits. 100. According to the Nyquist Sampling Theorem, a sufficient condition for these to be no aliasing in the sampled signal is that the highest frequency in the signal point to sampling must be: A. Less than the half of the sampling frequency. B. Greater than half of the sampling frequency. C. Less than the sampling frequency. D. Greater than the sampling frequency. 101. If the signal is power doubled at a given transmitter, what is the decibel increase? A. 0.5 dB B. 2 dB C. 3 dB D. 4 dB 102. In optical communication Frequency Division Multiplexing (FDM) is called? A. Polarization Division Multiplexing (PDM) B. Space Division Multiplexing (SDM) C. Single Sideband Modulation (SSB) D. Wavelength Division Multiplexing (WDM) 103. TQM stands for: A. Tool Quality Management B. Test Quality Manager C. Total Quality Manager D. Total Quality Management 104. Intersymbol interface is eliminated by applying which of the following? A. Nyquist Criterion B. Pulse Code Modulation C. Shannon Bandwidth D. SSB Modulation 105. Which is liquid in the following substances? A. Al B. In Page 16 of 22  C. Hg D. Ni 106. The power factor of an alternator is obtained from its: A. Excitation B. Speed C. Load D. None of the above 107. Two circuit components of reliability R1 = 0.92 ohms and R2 = 0.85 ohms. If anyone of the circuit components fails circuit works perfect. What is the combination of reliability of both the components? A. 0.78 B. 0.85 (R1+R2) –R1R2 = (0.92+0.85) – (0.92*0.85) = 0.99 C. 0.92 D. 0.99 108. A variable resistance R is connected across a source of voltage V, if the value of the resistance R is gradually varied, the relationship between I and R will be represented by which curve? A. Figure A B. Figure B C. Figure C D. Figure D 109. Considering the interdisciplinary nature of engineering projects currently, which of the below is true: A. Engineers should be well trained in one specific field of engineering only B. Engineers should be well trained in multiple engineering fields C. Engineers should have a mild idea about all engineering fields D. Engineers from a specific field should seek assistance from the specialized engineers in different field 110. In 50hz induction machine, if the no load speed is 2900 RPM, the slip frequency is: A. 0.33 Hz B. 0.67 Hz C. 1.33 Hz D. 1.67 Hz 111. I/P side of the GSM network should contain: A. Low Pass Filter B. High Pass Filter Page 17 of 22  C. Band Pass Filter D. None of the above 112. Power consumption in Advanced Embedded can be reduced by using: A. Pipe Lining B. Voltage sensing C. Parallelizing D. None of the above 113. Which of the following regression models is not considered to be a linear regression model for predicting Y in terms of X: A. B. C. D. 114. Which of the below device is faster and consumes less power in large scale projects? A. DSP (Digital Signal Processing) B. Microcontroller C. FGPA (Field Programmable Gate Array) D. ASIC (Application Specific Integrated Circuit) 115. In Fig 1.5.1 What is the purpose of Block B? A. A Tuned RF Amplifier B. An FM amplifier C. An IF Amplifier D. An AF pre-amplifier 116. The highest element in the hierarchical breakdown of the WBS is: A. Deliverables B. A cost accounts C. Work package D. The project 117. The lowest element in the hierarchical breakdown of the WBS is: A. Deliverables B. A Work Package C. A Cost Account D. A Lowest Sub deliverable E. An Object F. None of the above Page 18 of 22 118. A Digital Signal Processor (DSP) is designed to perform FFT operations for a digital oscilloscope that utilizes a 12-bit A/D converter, the most cost effective ALU architecture for this CPU is a: A. Fixed point multiplier with an 8-bit data path B. Floating point multiplier with an 8-bit data path C. Fixed point multiplier with a 16-bit data path D. Floating point multiplier with a 16-bit data path 119. The fan out of a logic gate is: A. The number of gates in parallel with it B. Its propagation delays. C. The number of gates connected to its output. D. The number of gates connected to its input. 120. Splitting project into tasks and estimate time and resources required to complete each task is called: A. Project scheduling B. Project optimization C. Project Control 121. A large scale integrated (LSI) circuit is shown in the figure below. What is the best description of the circuit? A. Phase Detector B. Phase Locked Loop C. Clock Phase Skew Compensator D. Multiphase Clock Extractor 122. A 3-phase distribution line conductor configuration is as follows A. 3.5 B. 4.0 C. 4.4 D. 5.0 123. The circuit shown is a ground fault protection scheme. The purpose of R is to: Page 19 of 22  A. Limit the ground current and prevent damage only B. Maintain a potential difference between N and EG only C. Decrease the interrupting rating required of M only D. A, B, C are correct 124. Find the early and late start of activity D for the project: A. ES = 12, LS = 15 B. ES = 13, LS = 22 C. ES = 19, LS = 24 D. ES = 22, LS = 24 125. In which of figure the relationship between voltage and current is in accordance with Ohms Law: A. Figure A B. Figure B C. Figure C D. Figure D Page 20 of 22 126. Which of the estimates listed would occur last in project time line? A. Rough Order of Magnitude B. Square Foot Estimate C. Bid Estimate D. Assemblies Estimate 127. The transfer function Y/R for the block diagram shown below is: A. ----Correct Answer B. C. D. Page 21 of 22 128. Figure 1 represents equivalent transformations of the components in Figure 2. The values of the transformed source and resistor in Figure 1 are most nearly: A. B. ----Correct Answer C. D. I = 5 / 2 = 2.5 A Gb = 1 / 4 =0.25S Page 22 of 22 UPDA Electrical/Electronic Engineering Reviewer Material No. 03 1. Given data is Ambient Temperature is 65⁰C (k value is 1.38 x 10-23) Frequency is 10 kHz Resistance is 100 Ohms Formula is given as hint Vnoise = root over 4kTR (BW-f): A. 1.9 microV B. 1.0 nV C. 1.9 nV D. 0.1 microV 2. Uninterruptible power system has to be connected to the network by: A. Series to feed electrical power at normal time B. Parallel to feed electrical power at normal time C. Series to feed electrical power at critical time D. Parallel to feed electrical power at critical time 3. In conducting a power-flow (or load flow) study using conventional iterative calculation, which of the following statements is most nearly correct? A. One bus is designated as a slack bus, and the others are designated as voltage-controlled buses or load buses. B. One bus is designated as a voltage-controlled bus, and the others are designated as slack buses or load buses. C. One bus is designated as a load bus, and the others are designated as voltage-controlled buses or slack buses. D. There may be any number of slack buses, voltage-controlled buses, and load buses designated, as long as they total the number of buses in the network. 4. Which of the following engineer do the tests for the reliability and sustainability? A. Production Engineer B. Research Engineer C. Testing Engineer 5. Which one of the following is not correct based on Ohm’s Law? A. Potential / Current = Constant B. Current / Potential = Constant C. Current = Potential x Resistance D. Potential = Current x Resistance 6. The room amplifier in a wireless system amplifies: A. The baseband signals B. The modulated signal only C. The encoded and modulated signal D. The received signal Page 1 of 18 7. Harmonic currents present in a power system may cause: A. Excessive heating B. Malfunctioning of the control and regulating circuits C. Resonance D. All of the above 8. We have three resistance each of 1 Ohm. How many different values of resistance can be obtained by different series-parallel combinations if all the three resistance are to remain in the circuit? A. 3 B. 4 C. 5 D. 6 9. The wind load LSi in Newton’s on an overhead line structure is calculated using the following formula. Lsi = 0.613v2 m/s KzGRF / CfAm2. What does the Kz term represents? A. Force Coefficient B. Guest Response Factor C. Velocity Pressure Coefficient D. Wind Speed 10. The resistance of 100W, 200V tamp is: A. 100 ohms B. 200 ohms C. 400 ohms D. 1600 ohms 11. Consider the oscillator circuit shown below. The circuit uses which resonant modes of the crystal X1: A. Series Resonant B. Parallel Resonant C. Series-Parallel Resonant D. Non-Resonant 12. The OP-AMP circuit shown performs the function of: A. Simplification B. Integration C. Differentiation D. Summing E. Attenuation Page 2 of 18 13. What is the best economical way to start a single-phase motor? A. Resistive method B. Inductive method C. Capacitive method D. None of the above 14. Strength of Materials? A. Ability to withstand external forces B. Ability to withstand internal forces C. Ability to withstand pressure D. Ability to withstand an applied load without failure or plastic deformation 15. For which of the following circuits elements is superposition valid? A. Independent source B. Dependent source C. Charged capacitor D. Inductor with I Initial not equal to zero 16. What is the difference between EPROM and EEPROM? A. EEPROM is volatile and EPROM is non-volatile. B. EEPROM is erased by exposing ultraviolet and EPROM by electrically. C. EEPROM/EPROM both are same. D. EEPROM is used for Operating systems storage and EPROM is for computer constants required for systems start-up. 17. Why steel is used in concert structure because? A. it is cheap B. good bond C. highly rigid D. temperature expansion coefficient is same with cement/concrete 18. For a 12AWG wire we should use CB rating: A. 10A B. 15A C. 20A D. 30A Hint: 14 Gauge Wire: 15 amps CB 12 Gauge Wire: 20 amps CB 10 Gauge Wire: 30 amps CB 19. If fuse rate = 8 Ampere, what does mean? A. It will not work if current is less than B. It has a resistance of 8W C. It will work only if current is 8A D. It will melt if current exceeds 8A Page 3 of 18 20. CMOS Inverter is superior to the R-Pull up inverter due to: A. High impedance B. Smaller propagation delay C. Symmetric transfer characteristics D. Asymmetric transfer characteristics 21. The delay time for a series of activities that would not affect if occurred the project timing called: A. Total Slack (Total Float) B. Total Slag C. Critical Float D. Float Pad E. Critical Slag 22. Which one of the following is not describes ceramic? A. Crystallizers B. High Resistivity C. High Conductivity D. Insulator 23. The device used for measuring potential difference is known as: A. Potentiometer B. Ammeter C. Galvanometer D. Voltmeter 24. Among the sites being considered for a new main library are those adjacent to the following areas or services. The most appropriate site is one that is adjacent to: A. A residential neighborhood and recreation facilities B. Mosques and government offices C. Public schools D. Shopping and public transportations 25. Number 34 in the following “N34’ E” usually will be specified with: A. Starting Point B. Traverse C. Bearing 26. Changing in the excitation in grid having an alternator connected to it will having the following effect: A. Change in active component of load B. Change in reactive component of load C. Change in Power Factor of Load D. The frequency of the generated wave form will be affected Page 4 of 18 27. Sensor transducers will transfer: A. Move to electrical signals B. Heat to mechanical signal 28. What is the term of component arrangement for waves in transmitting and receiving? A. Array B. Source C. Dish Antenna 29. A passive filter can: A. filter only B. filter and amplify only C. amplify only D. none of the above 30. Which of the following types of material has high thermal and electrical conductivity? A. Ceramic B. Metal C. __________ (any other write here) 31. V = 50 Cos (40wt + 30) + 28.2 Cos (40wt + 30), R = 5, find P: A. 1025 Erms = ((Edc2 + (Em12+Em22+---------+Emn2/2))0.5 =((502+28.282)/2)0.5 = 40.62V B. 650 P = V2 / R = 1650/5 = 330W C. 330 D. 550 32. The initial investment for a project is 2.0 million QR. A net annual profit of 150,000 QR is anticipated. Using a 10% desired rate of return on the investment what is the payback period for the project? A. 6.84 years B. 4.55 years C. 5.36 years D. 8.89 years 33. Which of the following systems uses Assembly language? A. SCADA B. Microcontrollers C. ASIC D. FPGA E. Both A & B Page 5 of 18 34. Weak power system means: A. Power system with high short circuit capability and low sensitivity to harmonics B. Power system with high short circuit capability and high sensitivity to harmonics C. Power system with low short circuit capability and low sensitivity to harmonics D. Power system with low short circuit capability and high sensitivity to harmonics 35. For the diagram shown, what is the approximate required minimum clearance distance, R, if the phase voltage of the live parts is 13,800V? A. 1.8m B. 2.5m C. 3.0m D. 4.0m 36. Project Control will be: A. Before construction B. During construction C. After construction D. Throughout the process 37. In 50Hz induction machine, if the no load speed is 2900 rpm, the slip frequency is: A. 0.33 Hz N = 120f/P = 3000 B. 0.67 Hz S = 3000-2900/3000 =0.0333 C. 1.33 Hz slip frequency = sf = 0.0333*50 = 1.67Hz D. 1.67 Hz 38. Which of the special purpose diodes formed by a junction between a layer of metals and layer of semiconductor? A. A Schottky diode B. A tunnel diode C. A Zener diode D. A Varactor diode 39. What is the worth after 5 years of an investment of One Million Qatari Riyals if the APR is 9% paid monthly? A. 1,450,000 B. 1,538,634 C. 1,824,320 A = P ( 1+ i/mn)n D. 1,926,248 40. Which is not part of Scope Management? A. Define scope B. Verify Scope C. Execute Scope D. Create WBS Page 6 of 18 41. Process to identify, study, analyze, and rectify root cause of incidents is called: A. Pareto Analysis B. Risk Opportunity Management C. Cause and Effect Analysis D. Quality Control Procedures 42. In the context of time management, which is not a typical type of activity dependency: A. Mandatory dependency B. Discretionary dependency C. External dependency D. Multiple dependency 43. Which is not a resource related to activities: A. Manpower B. Material C. Machinery D. Time 44. Process of decomposing deliverables into smaller, more manageable components is complete when: A. Project justification has been established B. Change request have occurred C. Cost and duration estimates can be developed D. Each work element can be found in the WBS 45. Project life cycle is different than product life cycle in that project life cycle: A. Does not incorporate methodology B. Is different for each industry C. Covers different project D. Describes project management activities 46. Best time to assign a project manager to a project is during: A. Execution B. Initiation C. Monitoring and Controlling D. Closing 47. Scheduling periodic tasks to execute on a processor based on assigning the highest priority to the task that has the shortest period (greatest frequency) is: A. Cyclic executive B. Deadline monotonic C. Earliest deadline first D. Rate monotonic Page 7 of 18 48. The final step in the definition of a work breakdown structure is to: A. Assign codes for each activity of the work package B. Assign the cost account to a manager C. Assign the work package to a manager D. Develop the responsibility matrix E. None of these are included in the final step 49. In transformer saturation: A. The efficiency decreases and the no load current increases B. The efficiency decreases and the no load current decreases C. The efficiency increases and the no load current increases D. The efficiency increases and the no load current decreases 50. When using the method of symmetrical components, which of the following statements is most nearly correct: A. The three zero sequence current phasor are equal in magnitude and displaced by 1200. B. The three positive sequence and the three negative sequence current phase are all equals in magnitude, but have opposite phase. C. In wye connected synchronous generator, the voltage drops through the neutral grounding resistor, R is equal to √3 Io R, where I0 is the zero-sequence current. D. Positive sequence and negative sequence currents cannot pass through the neutral grounding resistor in a wye-connected generator. 51. To make sure that an instrument did not drift with time, we need to: A. Heat it up B. Change it C. Calibrate it D. Put it into higher position 52. What are the most important components of sustainability? A. Economical B. Social C. Environmental D. All are equally important 53. Among the sites being considered for a new main library are those adjacent to the following areas or services. The most appropriate site is one that is adjacent to: A. A residential neighborhood and recreation facilities B. Mosques and governmental offices C. Public schools D. Shopping and public transportation 54. For the design and implementation of smoke detectors and door control system, it is preferable to use: A. FPGAs B. Microcontrollers C. ASIC Page 8 of 18 55. What does QSAS stands? A. Qatar Standards of Architectural Sustainability B. Qatar Sustainability Assessment System C. Qatar System for Assessing Sustainability D. Qatar Sustainability Assessment Standards 56. According to Brundtland Report (WCED, 1987) defining the main attributes of sustainability and sustainable development, what are the three main pillars of sustainable development? A. Economic, Social and Cultural factors B. Economic, Cultural and Environmental factors C. Economic, Environmental and Social factors D. Political, Social and Environmental factors 57. The bode plot for the circuit shown A = V2 / V1, is: A. B. C. D. 58. Project management is ideally suited except: A. Accountability B. Flexibility C. Innovation D. Speed E. Repeatability Page 9 of 18 59. In the circuit below, Switch S1 closes at t = 0. The diode D is rated at a maximum peak current of 5A. Assume that the initial charge on the capacitor is zero. The minimum value of R (n) to prevent exceeding the diode maximum peak current is most nearly: A. 33 B. 24 C. 21 D. 11 R = Vm / Im = 120√2 / 5 = 33.93 60. A circuit breaker is: A. A current interrupting device B. Power factor correcting device C. Harmonics correcting device D. All of the above 61. Which of the following would not be classified as a direct cost? A. Safety and first aid expenses B. Finishing labor for a concrete slab C. Materials for a structural steel frame D. Foundation excavation equipment expenses 62. The assembly language is usually used for programming: A. DSP B. Microcontrollers C. FPGA 63. The term sustainability refers to: A. Maintaining resource use, a at current or higher levels. B. Keeping the natural environment and human society in happy, healthy and functional state. C. Holding or increasing the current quality of human life. D. Always focusing on fulfilling shortage term needs. E. Opposing change from current policies. 64. In circuit 27 is given and along with 52 mentioned: A. Time delay B. Overcurrent function in CB C. Under voltage relay in CB 65. AM radio signal is modulated how? A. Quadrature amplitude modulated B. Quadrated Semi Band Amplitude Modulation C. Dual Modulation with Semi Quadrature form D. One more is there Page 10 of 18 66. Two coils are in series. The H is 4 and mutual inductance value is 0.75. Hint: induction = K: A. 2 B. 4 C. 8 D. 12 67. Which system will cause saturated currents? A. 50 Hz transformer by rated MVA but 60 Hz B. 3 Phase 50 Hz motor by Inverter of rated voltage but half of frequency 68. A battery which factor is least dependent for long self-discharge property: A. concentration of electrolyte B. temperature C. long period D. nominal voltage 69. Transconductance of BJT is: A. dIE / dIC B. VBE / IE C. IE / IC D. Ic / VBE 70. The power factor of an alternator depends on: A. Load B. Speed of rotor C. Core losses D. Armature Losses 71. Induction load running at stability slip is: A. 1 B. 0 72. If an induction motor speed at no-load is 745 RPM, what is the speed of the motor: A. 700 RPM B. 750 RPM C. 800 RPM D. 850 RPM 73. Common breakers used in distribution level: A. Air brake circuit breaker B. Air blast circuit breaker C. Oil type D. Vacuum Page 11 of 18 74. Fire Alarm and Smoke Detector is preferable to use: A. Microcontrollers B. ASIC C. FPGA 75. Which transmission voltage is not applicable in Qatar? A. 66 kV B. 132 kV C. 220 kV D. 400 kV 76. Which one is the highest input impedance? A. NPN-BJT B. MOSFET C. Both 77. Embedded System should have best: A. Dynamic response B. Static response C. No response 78. Embedded System working on which platform: A. SCADA B. Microcontrollers C. ASIC D. FPGs 79. Harmonics in system is mainly due to: A. Variable imp load B. Saturated magnetic load C. Power electronic load D. All of the above 80. Reinforce concrete will give: A. High tensile strength B. High compression strength C. Both 81. What is the resistance for 100W and 200V potentials? A. 200 B. 100 C. 400 D. 1600 Page 12 of 18 82. The unit of conductance: A. Ohm B. Ohm/m C. Ohm-m D. Mho 83. The unit of conductivity: A. Ohm B. Ohm/m C. Mho D. Mho/m 84. The unit of resistance: A. Ohm B. Ohm/m C. Ohm-m D. Mho 85. The unit of resistivity: A. Ohm B. Ohm/m C. Ohm-m D. Mho/m 86. A differential relay designed to protect a zone of the distribution system, uses current transformer (CTs) connected to annually CTs. The auxiliary CTs must match both the phase shift and the ratio of the differential relays CTs if the values do not match. Which of the following is the least likely outcome? A. The trip could occur at a lower level than expected. B. The trip could occur at a higher level than expected. C. The trip could occur under a non-fault condition. D. The trip could occur only when the CTs are wired in parallel. 87. A Wrist watch mercury cell has a capacity of 200 x 10 -3 AH. How many months can the watch function without replacement if it draws 15 x 10-6 A? Hint: Dh = I x t A. 9 months B. 18 months C. 24 months Duration = Capacity / current = (200/1000) / (15/1000000) = 13333.33Hrs D. 30 months = 555.55days = 18 months Page 13 of 18 88. The system shown is stable for: A. k > -2 B. –3