ElectricianPowerDistribution1stSem.pdf

Electrician Power Distribution – Semester 1 Module 1 - Safety practice & Hand tools Reviewed and updated on: 01st November 2019 Version 1.1 1 : What is the name of the safety sign? 7 : Which is...

Electrician Power Distribution – Semester 1 Module 1 - Safety practice & Hand tools Reviewed and updated on: 01st November 2019 Version 1.1 1 : What is the name of the safety sign? 7 : Which is the waste disposal method that produces heat? A : Recycling B : Composting C : Incineration D : Waste compaction A : Warning sign B : Mandatory sign C : Prohibition sign D : Information sign 2 : Which artificial respiration method is to be performed to the victim with injuries on the chest and belly? A : Schafer’s method B : Mouth to mouth method C : Arm lift chest pressure method D : Nelsons arm-lift back pressure method 3 : Which is the physical hazard? A : Smoking B : Vibration C : Corrosive D : Radio active 4 : Which type of fire extinguisher is used for fire on electrical equipment? A : Halon type B : Foam type C : Gas cartridge type D : Stored pressure type 5 : What is smothering in extinguishing of fire? A : Adding the fuel element to the fire B : Removing the fuel element from the fire C : Using of water to lower the temperature D : Isolating the fire from the supply of oxygen 6 : Which is to be switched OFF in case of emergency? A : Sub main switch 1 B : Sub main switch 2 C : Main switch D : Distribution board 3 NIMI Question Bank Page 1 of 7  Electrician Power Distribution – Semester 1 Module 2 - Basic workshop practice Reviewed and updated on: 01st November 2019 Version 1.1 8 : What is the name of tool? 13 : What is the use of this gauge? A : Check the internal radius of the job B : Check the diameter of cylindrical job A : Claw hammer C : Check the height and parallism of job B : Ball pein hammer D : Set the job on machines parallel to datum C : Cross pein hammer D : Straight pein hammer 14 : Which material is used for making rivets? A : Cast Iron 9 : What is the name of the drill bit? B : Mild steel C : Stainless steel D : Low carbon steel 15 : Which precautions is to be followed while using insulated combination pliers? A : Do not use for holding the object B : Do not lubricate in the hinged portion C : Avoid using for gripping small objects D : Avoid damages to the insulation of hand A : Flat drill bit grips B : Taper shank bit C : Countersink bit 16 : What is the purpose of cross cut cold D : Straight shank bit chisel? A : Cutting keyways 10 : Which type of half lap joint is used if one B : Cutting curved grooves part of a job meets another part at some distance C : Squaring materials at corners from the ends? D : Removing metal from large flat surface A : End-lap input B : Cross-lap joint C : Middle-lap joint D : Corner-half lap joint 11 : Name the part marked X of the file. A : Edge B : Heel C : Tang D : Shoulder 12 : What is the name of the stake used for general purpose in sheet metal work? A : Square stake B : Hatchet stake C : Blow horn square stake D : Bevel edge square stake NIMI Question Bank Page 2 of 7  Electrician Power Distribution – Semester 1 Module 3 - Soldering Reviewed and updated on: 01st November 2019 Version 1.1 17 : How many electrons are there in the valence shell of a copper atom? 23 : What is the possible range to measure the A : 1 size of the wire in a Standard Wire Gauge (SWG)? B : 2 A : 0-44 C : 8 B : 0-42 D : 18 C : 0-38 D : 0-36 18 : What is the value of electrical conductivity of aluminium conductor? A : 61 mho/m B : 56 mho/m C : 35 mho/m D : 28 mho/m 19 : What is the name of the wire joint? A : Aerial tap joint B : Knotted tap joint C : Duplex cross tap joint D : Double cross tap joint 20 : Which type of wire joint is found in the junction box? A : Aerial tap joint B : Plain tap joint C : Rat tail joint D : Married joint 21 : What is the name of the soldering method? A : Dip soldering B : Soldering with blow lamp C : Soldering with soldering gun D : Temperature controlled soldering 22 : Which type of soldering flux is used for soldering galvanised iron? A : Rosin B : Zinc chloride C : Sal ammonia D : Hydrochloric acid NIMI Question Bank Page 3 of 7  Electrician Power Distribution – Semester 1 Module 4 - Magnetism and capacitors Reviewed and updated on: 01st November 2019 Version 1.1 24 : What electrical quantities are related in C : Electrolytic-Aluminium type Ohms law? D : Electrolytic-Tantalum type A : Current, resistance and power B : Current, voltage and resistivity 30 : Which is the correct expression of C : Current, voltage and resistance capacitance C if the electric charge is Q and the D : Voltage, resistance and current density voltage is V? A : 25 : What is the formula for the equivalent resistance (RT) if the three resistors R1, R2 & R3 are connected in parallel circuit? B : A : RT = R1 + R2 + R3 B : C : C = VQ D : C : D : 26 : What is the unit of resistivity? A : ohm / cm B : ohm / cm2 C : ohm - metre D : ohm / metre 27 : What is the S.I unit of Flux density? A : Tesla B : Weber C : Weber/metre D : Ampere-turns 28 : Which rule is applied to find the direction of magnetic fields in a solenoid coil? A : Cork screw rule B : Right hand palm rule C : Flemings left hand rule D : Flemings right hand rule 29 : Which type of capacitor is used for space electronics? A : Plastic film type B : Ceramic disc type NIMI Question Bank Page 4 of 7  Electrician Power Distribution – Semester 1 Module 5 - Measuring instruments - I Reviewed and updated on: 01st November 2019 Version 1.1 31 : What is the form factor (Kf) for sinusoidal AC? 36 : Calculate the total power by two wattmeter A : 1.00 (W1 & W2) method, if one of the wattmeter (W2) B : 1.11 reading is taken after reversing. C : 2.22 A : W1 x 2 D : 4.44 B : W1 only C : W1 - W2 32 : What is the phase displacement between D : W1 + W2 phases in a 3 phase circuit? A : 90° B : 120° C : 180° D : 360° 33 : What is the name of the instrument? A : Absolute instrument B : Indicating instrument C : Recording instrument D : Integrating instrument 34 : Name the type of instrument? A : Absolute instrument B : Repulsion type moving iron C : Permanent magnet moving coil D : Dynamo meter type moving coil 35 : Which type of frequency meter? A : Weston type B : Ratio meter type C : Electro dynamic type D : Mechanical resonance type NIMI Question Bank Page 5 of 7  Electrician Power Distribution – Semester 1 Module 6 - Measuring instruments - II Reviewed and updated on: 01st November 2019 Version 1.1 37 : What is the relation between the line current (IL) and phase current (IP) in delta connected system? A : IL = IP B : IL = 3 IP C : IL = √3 IP D : IL = IP / √3 38 : What is the current in neutral conductor in 3 phase unbalanced load in star connected system? A : No current will flow B : The algebraic sum of current in 3 phases C : The algebraic sum of current in 2 phases only D : Lesser than the lowest current in any one of the phases 39 : What is the purpose of phase sequence meter? A : To control the speed of 3 phase motor B : To protect motor against short circuit fault C : To indicate the incorrect phase sequence of 3 phase D : To ensure the correct phase sequence of 3 phase system 40 : Which is the advantage of LED display over LCD display in digital multimeters? A : Can be seen in the dark B : Less current requires C : Given accurate reading D : Long life 41 : Which is used to improve the power factor in AC supply system? A : By connecting capacitors in series with load B : By connecting capacitor in parallel with load C : By connecting inductive loads in parallel D : By connecting inductive loads in series NIMI Question Bank Page 6 of 7  Electrician Power Distribution – Semester 1 Module 7 - Electronic practice Reviewed and updated on: 01st November 2019 Version 1.1 42 : What is the name of the resistor? B : UJT C : SCR D : IGBT 48 : How many characters are in hexadecimal A : Metal film resistor number system? B : Wire wound resistor C : Carbon – film resistor A : 6 D : Carbon composition resistor B : 8 C : 12 43 : Which doping material is used to make P- D : 16 type semi conductor? A : Boron 49 : Which quantity can be measured by CRO? B : Arsenic A : Frequency C : Antimony B : Inductance D : Phosphorous C : Resistance D : Power factor 44 : What is the input ripple frequency (Fin) of full wave rectifier? 50 : Which is the main application of SCR? A : Amplifier A : Fin = ½ F B : Oscillators B : Fin = Fin C : Multi vibrators C : Fin = 2 Fin D : Speed control of motors D : Fin = Ö2 Fin ANSWERS : 45 : Which function of transistor is illustrated? 1:D; 2:B; 3: B; 4:A; 5:D; 6:C; 7:C; 8:A; 9:B; 10:C; 11:B; 12:A; 13:A; 14:D; 15:D; 16:A; 17:A; 18:C; 19:B; 20:C; 21: D; 22: D; 23:D; 24:C; 25:D; 26:C; 27:A; 28:B; 29:D; 30:A; 31:B; 32:B; 33:A; 34:A; 35:D; 36:C; 37:C; 38:D; 39:D; 40:A; 41:B; 42:B; 43:A; 44:C; 45:A; 46:C; A : Switching 47:D; 48:D; 49:A; 50:D; B : Oscillation C : Modulation D : Amplification 46 : Which type of biasing is required to a NPN transistor for amplification? A : Base ground, emitter and collector positive B : Base negative, emitter positive and collector negative C : Base positive, emitter negative and collector positive D : Base positive, emitter negative and collector negative 47 : Which is the advanced version of power electronic component used in the output stage in drives? A : FET NIMI Question Bank Page 7 of 7