ECT 1018 Electrical Technology Past Paper PDF

ECT 1018 Due No due date Points 100 Questions 100 Time Limit 240 Minutes Allowed Attempts Unlimited Take the Quiz Again Attempt History Attempt Time...

ECT 1018 Due No due date Points 100 Questions 100 Time Limit 240 Minutes Allowed Attempts Unlimited Take the Quiz Again Attempt History Attempt Time Score LATEST Attempt 1 less than 1 minute 0 out of 100 Score for this attempt: 0 out of 100 Submitted Apr 12 at 8:58pm This attempt took less than 1 minute. Unanswered Question 1 0 / 1 pts The element Silicon is: a conductor an insulator Correct Answer a semiconductor a superconductor Unanswered Question 2 0 / 1 pts An element which falls somewhere between being an insulator and a conductor is called a: N-type conductor Correct Answer semiconductor P-type conductor intrinsic conductor Unanswered Question 3 0 / 1 pts In an atom: Correct Answer the electrons orbit the nucleus the protons and the neutrons orbit the nucleus in opposite directions the protons orbit around the neutrons the electrons and the neutrons orbit the nucleus Unanswered Question 4 0 / 1 pts An atom that loses an electron becomes: Correct Answer a positive ion a radioactive atom an isotope a negative ion Unanswered Question 5 0 / 1 pts An electric current passing through a wire will produce around the conductor: Correct Answer a magnetic field an electrostatic field an electric field nothing Unanswered Question 6 0 / 1 pts These magnetic poles repel: Correct Answer like negative unlike positive Unanswered Question 7 0 / 1 pts This material is better for making a permanent magnet: Correct Answer steel aluminium soft iron copper Unanswered Question 8 0 / 1 pts The better conductor of electricity is: Correct Answer copper aluminium silicon carbon Unanswered Question 9 0 / 1 pts The term describing opposition to electron flow in a metallic circuit is: voltage  current power Correct Answer resistance Unanswered Question 10 0 / 1 pts The substance which will most readily allow an electric current to flow is: Correct Answer a conductor a resistor a dielectric an insulator Unanswered Question 11 0 / 1 pts The plastic coating formed around wire is: a conductor an inductor Correct Answer an insulator a magnet Unanswered Question 12 0 / 1 pts The following is a source of electrical energy: p-channel FET carbon resistor Correct Answer lead acid battery germanium diode Unanswered Question 13 0 / 1 pts An important difference between a common torch battery and a lead acid battery is that only the lead acid battery: has two terminals Correct Answer can be re-charged contains an electrolyte can be effectively discharged Unanswered Question 14 0 / 1 pts As temperature increases, the resistance of a metallic conductor: becomes negative remains constant decreases Correct Answer increases Unanswered Question 15 0 / 1 pts In an n-type semiconductor, the current carriers are: photons electrons positive ions Correct Answer holes Unanswered Question 16 0 / 1 pts In a p-type semiconductor, the current carriers are: photons electrons Correct Answer holes positive ions Unanswered Question 17 0 / 1 pts An electrical insulator: lets electricity flow through it when light shines on it lets electric ity flow through it in one direction lets electricity flow through it Correct Answer does not let electricity flow through it Unanswered Question 18 0 / 1 pts Four good electrical insulators are: paper, glass, air, aluminium plastic, rubber, wood, carbon Correct Answer glass, air, plastic, porcelain glass, wood, copper, porcelain Unanswered Question 19 0 / 1 pts Three good electrical conductors are: Correct Answer gold, silver, aluminium gold, silver, wood copper, aluminium, paper copper, gold, mica Unanswered Question 20 0 / 1 pts The name for the flow of electrons in an electric circuit is: resistance voltage capacitance Correct Answer current Unanswered Question 21 0 / 1 pts This law is also known as Continuing Professional Development Act of 2016 Correct Answer RA 10912 RA 9292 RA 10975 RA 10175 Unanswered Question 22 0 / 1 pts  This law is also known as Cybercrime Prevention Act of 2012 RA 9292 Correct Answer RA 10175 RA 10975 RA 10912 Unanswered Question 23 0 / 1 pts Section 2 of RA 10912 Correct Answer Declaration of Policy Definition of Terms Strengthening CPD Programs Nature of the CPD Programs Unanswered Question 24 0 / 1 pts Section 3 of RA 10912 Declaration of Policy Correct Answer Definition of Terms Nature of the CPD Programs Strengthening CPD Programs Unanswered Question 25 0 / 1 pts Section 4 of RA 10912  Nature of the CPD Programs Correct Answer Strengthening CPD Programs Definition of Terms Declaration of Policy Unanswered Question 26 0 / 1 pts Section 5 of RA 10912 Declaration of Policy Strengthening CPD Programs Definition of Terms Correct Answer Nature of the CPD Programs Unanswered Question 27 0 / 1 pts The Section 6 of RA 10912 is about the Power, Functions and Responsibilities of CPD Council Secretariat Correct Answer Powers, Function and Responsibilities of the PRC and Board CPD Council Unanswered Question 28 0 / 1 pts The Section 7 of RA 10912 is about the Correct Answer CPD Council Power, Functions and Responsibilities of CPD Council Secretariat Powers, Function and Responsibilities of the PRC and Board Unanswered Question 29 0 / 1 pts The Section 8 of RA 10912 is about the Correct Answer Power, Functions and Responsibilities of CPD Council Powers, Function and Responsibilities of the PRC and Board CPD Council Secretariat Unanswered Question 30 0 / 1 pts The Section 9 of RA 10912 is about the Correct Answer Secretariat Powers, Function and Responsibilities of the PRC and Board CPD Council Power, Functions and Responsibilities of CPD Council Unanswered Question 31 0 / 1 pts The total capacitance of two or more capacitors in series is: Correct Answer always less than that of the smallest capacitor found by adding the capacitances together and dividing by their total number  always greater than that of the largest capacitor found by adding each of the capacitances together Unanswered Question 32 0 / 1 pts Filter capacitors in power supplies are sometimes connected in series to: reduce the ripple voltage further resonate the filter circuit Correct Answer withstand a greater voltage than a single capacitor can withstand increase the total capacity Unanswered Question 33 0 / 1 pts You can safely remove an unconscious person from contact with a high voltage source by: Correct Answer turning off the high voltage and then removing the person pulling an arm or a leg wrapping the person in a blanket and pulling to a safe area calling an electrician Unanswered Question 34 0 / 1 pts For your safety, before checking a fault in a mains operated power supply unit, first: short the leads of the filter capacitor check the action of the capacitor bleeder resistance Correct Answer turn off the power and remove the power plug  remove and check the fuse in the power supply Unanswered Question 35 0 / 1 pts Wires carrying high voltages in a transmitter should be well insulated to avoid: SWR effects Correct Answer short circuits over modulation overheating Unanswered Question 36 0 / 1 pts A residual current device is recommended for protection in a mains power circuit because it: Correct Answer removes power to the circuit when the phase and neutral currents are not equal removes power to the circuit when the current in the phase wire equals the current in the earth wire reduces electrical interference from the circuit limits the power provided to the circuit Unanswered Question 37 0 / 1 pts An earth wire should be connected to the metal chassis of a mains-operated power supply to ensure that if a fault develops, the chassis: Correct Answer does not develop a high voltage with respect to earth provides a path to ground in case of lightning strikes does not develop a high voltage with respect to the phase lead  becomes a conductor to bleed away static charge Unanswered Question 38 0 / 1 pts The purpose of using three wires in the mains power cord and plug on amateur radio equipment is to: Correct Answer prevent the chassis from becoming live in case of an internal short to the chassis make it inconvenient to use prevent short circuits prevent the plug from being reversed in the wall outlet Unanswered Question 39 0 / 1 pts The correct colour coding for the phase wire in a flexible mains lead is: blue white yellow and green Correct Answer brown Unanswered Question 40 0 / 1 pts The correct colour coding for the neutral wire in a flexible mains lead is: white Correct Answer blue brown yellow and green Unanswered Question 41 0 / 1 pts The correct colour coding for the earth wire in a flexible mains lead is: Correct Answer yellow and green white brown blue Unanswered Question 42 0 / 1 pts An isolating transformer is used to: ensure that faulty equipment connected to it will blow a fuse in the distribution board ensure that no voltage is developed between the output leads Correct Answer ensure that no voltage is developed between either output lead and ground step down the mains voltage to a safe value Unanswered Question 43 0 / 1 pts full-wave rectifier Correct Answer phase-locked loop product detector low-pass filter Unanswered Question 44 0 / 1 pts A stage in a receiver with input and output circuits tuned to the received frequency is the: local oscillator detector Correct Answer RF amplifier audio frequency amplifier Unanswered Question 45 0 / 1 pts An RF amplifier ahead of the mixer stage in a superhet receiver: Correct Answer increases the sensitivity of the receiver means no BFO stage is needed enables the receiver to tune a greater frequency range makes it possible to receive SSB signals Unanswered Question 46 0 / 1 pts Section 15 of RA 10912 Correct Answer Implementing Rules and Regulations Separability Clause Funding Fraud Relating to CPD Unanswered Question 47 0 / 1 pts Section 16 of RA 10912  Implementing Rules and Regulations Funding Separability Clause Correct Answer Fraud Relating to CPD Unanswered Question 48 0 / 1 pts Section 17 of RA 10912 Implementing Rules and Regulations Fraud Relating to CPD Correct Answer Separability Clause Funding Unanswered Question 49 0 / 1 pts The repealing clause of RA 10912 Section 21 Section 20 Correct Answer Section 18 Section 19 Unanswered Question 50 0 / 1 pts The effectivity clause of RA 10912  Section 18 Section 21 Correct Answer Section 19 Section 20 Unanswered Question 51 0 / 1 pts Train" and "single" is the mode selection for a _______. Correct Answer logic pulser current tracer multimeter logic probe Unanswered Question 52 0 / 1 pts The use of a logic probe may be improved through the use of a(n) ________. Correct Answer logic clip oscilloscope frequency counter current tracer Unanswered Question 53 0 / 1 pts The control of digital circuits is usually achieved with _________. sophisticated gating Correct Answer clock signals  selected frequencies random pulses Unanswered Question 54 0 / 1 pts In order for a logic probe to operate, its red and black leads must first be connected to a ________. logic clip HIGH or TRUE signal Correct Answer power source logic pulser Unanswered Question 55 0 / 1 pts The ideal test equipment to use for locating shorts in digital circuitry is the ________ and _______. current tracer, logic clip logic pulser, logic probe Correct Answer current tracer, logic pulser logic probe, clip Unanswered Question 56 0 / 1 pts The results of internal IC failures will usually be noticed during the ______ phase of troubleshooting. final test isolation repair Correct Answer diagnostic Unanswered Question 57 0 / 1 pts Erratic or unexplained digital circuit activity is often due to _________. a random pulse a glitch Correct Answer clock frequency changes a change in slew rate Unanswered Question 58 0 / 1 pts The device that would best aid in open track detection is a(n) ________. multimeter oscilloscope logic probe Correct Answer current tracer Unanswered Question 59 0 / 1 pts A check of all power supply voltages should be made during the ________ method of troubleshooting. Correct Answer half-split repair diagnosis final test Unanswered Question 60 0 / 1 pts A series of gradually decreasing sine wave oscillations is called: undershooting overshooting Correct Answer ringing slew Unanswered Question 61 0 / 1 pts The determination of a digital signal's frequency and waveshape is best accomplished with which test equipment? Correct Answer an oscilloscope a multimeter a frequency generator a spectrum analyzer Unanswered Question 62 0 / 1 pts A logic probe is placed on the output of a gate and the display indicator is dim. A logic pulser is used on each of the input terminals, but the output indication does not change. What is wrong? The gate is a tri-state device. The LOW indication is the result of a bad ground connection on the logic probe. Correct Answer The output of the gate appears to be open. The dim indication on the logic probe indicates that the supply voltage is probably low. Unanswered Question 63 0 / 1 pts A +5 V PCB power source that has been "pulled down" to a +3.4 V level may be due to: a faulty regulator Correct Answer a circuit short the half-split method a circuit open Unanswered Question 64 0 / 1 pts Measurement of pulse width should be taken at a 50% mean of the: leading and trailing amplitude Correct Answer rise and fall overshoot and undershoot damping and ringing Unanswered Question 65 0 / 1 pts Which test equipment best allows a comparison between input and output signals? a logic probe an oscilloscope Correct Answer a multitrace oscilloscope a spectrum analyzer Unanswered Question 66 0 / 1 pts  The duty cycle of a pulse is determined by which formula? Duty Cycle = t/pw x 100% Duty Cycle = PRF/pw x 100% Correct Answer Duty Cycle = pw/t x 100% Duty Cycle = PRF/PRT x100% Unanswered Question 67 0 / 1 pts What is the next step after discovering a faulty gate within an IC? resolder the tracks repair the gate recheck the power source Correct Answer replace the IC involved Unanswered Question 68 0 / 1 pts The use of a multimeter with digital circuits allows the measurement of: pulse width Correct Answer voltage or resistance current pulse trains Unanswered Question 69 0 / 1 pts The use of triggered sweep when using an oscilloscope provides more accuracy in which area?  graticule activity amplitude Correct Answer timing frequency Unanswered Question 70 0 / 1 pts The time needed for a pulse to increase from 10% to 90% of its amplitude defines: Correct Answer rise time propagation delay duty cycle pulse width Unanswered Question 71 0 / 1 pts Which device would best aid in shorted track detection? oscilloscope multimeter Correct Answer current tracer logic pulser Unanswered Question 72 0 / 1 pts A direct current can be measured  directly by dc potentiometer none of the above Correct Answer by dc potentiometer in conjunction with a standard resistance by dc potentiometer in conjunction with volt ratio box Unanswered Question 73 0 / 1 pts Consider the following galvanometers: 1. D'Arsonval 2. Ballistic 3. Vibration Which of these are permanent magnet moving coil instruments? 1 and 2 only Correct Answer 1, 2 and 3 1 and 3 only 2 and 3 only Unanswered Question 74 0 / 1 pts A moving iron instrument has two aluminium vanes, one fixed and one movable two movable iron vanes two vanes, one fixed made of Aluminium and the other movable made of iron Correct Answer two iron vanes, one fixed and one movable Unanswered Question 75 0 / 1 pts The temperature coefficient of resistance for a thermistor is  low and positive high and positive Correct Answer high and negative low and negative Unanswered Question 76 0 / 1 pts To measure an unknown ac voltage by an ac potentiometer it is desirable that supply for the potentiometer is taken Correct Answer from the same source as the unknown voltage from a battery either (a) or (b) from a source which is not the same as unknown voltage Unanswered Question 77 0 / 1 pts A linear displacement digital transducer generally uses BCD Correct Answer gray code straight binary code hexadecimal code Unanswered Question 78 0 / 1 pts Two wattmeter method for 3 phase power measurement can be used only for Correct Answer both balanced and unbalanced loads  star connected loads unbalanced loads balanced loads Unanswered Question 79 0 / 1 pts For measuring inductance with high Q, we should use Either (a) or (b) Maxwell Wien bridge Maxwell's bridge Correct Answer Hay's bridge Unanswered Question 80 0 / 1 pts A resistance strain gauge has a resistance of about Correct Answer 100 Ω 25 Ω 10 Ω 1Ω Unanswered Question 81 0 / 1 pts Which of the following would apply to a moving coil instrument? An even scale, measuring a.c. An uneven scale, measuring d.c. Correct Answer An even scale, measuring d.c. An uneven scale, measuring a.c. Unanswered Question 82 0 / 1 pts Which would refer to a moving iron instrument? An even scale, measuring d.c and a.c. An uneven scale, measuring d.c. only Correct Answer An uneven scale, measuring d.c. and a.c An uneven scale, measuring a.c. only Unanswered Question 83 0 / 1 pts Which would refer to a moving coil rectifier instrument? An uneven scale, measuring a.c. An even scale, measuring d.c. An uneven scale, measuring d.c. Correct Answer An even scale, measuring a.c. Unanswered Question 84 0 / 1 pts Which of the following is needed to extend the range of a milliammeter to read voltages of the order of 100 V? a parallel high-value resistance a parallel low-value resistance a series low-value resistance Correct Answer a series high-value resistance Unanswered Question 85 0 / 1 pts  So-called "transformerless" power supplies are used in some applications (notably tube-type radios and TV receivers). When working on such equipment, one should be very careful because: DC circuits are negative relative to the chassis the load across the power supply is variable chassis connections are grounded by the center pin of the power source's plug Correct Answer one side of the line cord is connected to the chassis Unanswered Question 86 0 / 1 pts How should you position the antenna of a hand-held transceiver while you are transmitting? Pointed down to bounce the signal off the ground Pointed away from the station you are contacting Pointed towards the station you are contacting Correct Answer Away from your head and away from others Unanswered Question 87 0 / 1 pts Adding a series inductance to an antenna would: Correct Answer decrease the resonant frequency have no change on the resonant frequency increase the resonant frequency have little effect Unanswered Question 88 0 / 1 pts  How do you find a resistor's tolerance rating? Correct Answer By reading the resistor's colour code By using a voltmeter By reading its Baudot code By using Thevenin's theorem for resistors Unanswered Question 89 0 / 1 pts To replace a faulty 10 millihenry choke, you could use two: Two 5 millihenry chokes in parallel Two 30 millihenry chokes in parallel Two 20 millihenry chokes in series Correct Answer Two 5 millihenry chokes in series Unanswered Question 90 0 / 1 pts How does a coil react to AC? As the amplitude of the applied AC increases, the reactance increases Correct Answer As the frequency of the applied AC increases, the reactance increases As the frequency of the applied AC increases, the reactance decreases As the amplitude of the applied AC increases, the reactance decreases Unanswered Question 91 0 / 1 pts The nature and scope of practice of electronics engineering and electronics technician professions is stated in what section of the RA 9292?  Section 6 Section 7 Section 4 Correct Answer Section 5 Unanswered Question 92 0 / 1 pts Non-engineering work or activity relating to the installation, construction, operation, control, tests and measurements, diagnosis, repair and maintenance are the scope of work of what electronics profession? ECE RECE PECE Correct Answer ECT Unanswered Question 93 0 / 1 pts What electronics profession has the sole authority to provide consulting services and to sign and seal electronics plans, drawings, permit applications, specifications, reports and other technical documents prepared by himself/herself and/or under his direct supervision? Correct Answer PECE ECE RECE ECT Unanswered Question 94 0 / 1 pts The Professional Regulatory Board of Electronics Engineering is composed of _______  Chairman and Commissioner Commissioner, Chairman and two (2) members Correct Answer Chairman and two (2) members Three (3) members Unanswered Question 95 0 / 1 pts What is Section 6 of RA 9292? Categories of Practice Powers and Functions of the Board Correct Answer Composition of the Board Nature and Scope of Practice Unanswered Question 96 0 / 1 pts Powers and functions of the board of electronics engineering is stated under what article of the RA 9292? Section 4 Section 5 Section 6 Correct Answer Section 7 Unanswered Question 97 0 / 1 pts What Section 8 of RA 9292?  Scope of Examination Correct Answer Qualifications of Board Members Qualifications for Examination Compensation and Allowances Unanswered Question 98 0 / 1 pts According to the section 9 of RA 9292, the members of the Board shall hold office for a term of how many years from the date of appointment? two years seven years Correct Answer three years ten years Unanswered Question 99 0 / 1 pts The compensation and allowances of the board of electronics engineering is stated at what section of the RA 9292? Section 11 Correct Answer Section 10 Section 12 Section 13 Unanswered Question 100 0 / 1 pts What section of the RA 9292 states that all applicants seeking to be registered and licensed as Electronics Engineers and Electronics Technicians, shall undergo the required examinations to be given by the Board?  Section 12 Section 10 Correct Answer Section 13 Section 11