1
The switch is always connected in series with the point to be controlled is….
a) One way switch
b) Two way switch
c) Three way switch
d) None of these
Ans- a)
2
Cable is made up of……..
a) Steel
b) Copper
c) Aluminum
d) Wood
Ans-b)
3
Insulation is provided to……
a) prevent leakage current from conductor
b) minimize the risk of fire and shock
c) a) and b) both
d) none of these.
Ans-c)
4
Switch used for stair case wiring is…….
a) One way switch
b) Two way switch
c) Push button switch
d) None of these
Ans- b)
5
VIR means…………..
a) Valcanised indian rubber
b) Valcanised intra rubber
c) Valcanised inter rubber
d) Valcanised insulation rubber
Ans-a)
6
Socket outlets are used where ……….. electrical connections are required
a) permanent
b) temporary
c) a) and b) both
d) none of these
7
Ans-b)
Megger is used to measure…….
a) Insulation resistance
b) Insulation capacitance
c) Insulation inductance
d) Insulation conductance.
Ans-a)
8
HRC fuses means…………
a) High rupturing capacity fuses
b) High resolution capacity fuses
c) High rupid capacity fuses
d) None of these.
Ans-a)
9
Wattmeter is used to measure
a) resistance
b) power
c) capacitance
d) inductance
Ans-power.
10 Non conventional energy sources are……
a) solar
b) tidal
c) tube lights
d) both a) and b)
ans-d)
11 Following meter is a part of megger…………
a) Ohm meter
b) Wattmeter
c) Voltmeter
d) Ammeter
Ans-a)
12 In case of short circuit……….. current will flow in the circuit
a) low
b) infinite
c) zero
d) very low
Ans-b)
13 Two wattmeter reading are 1500 W and 700 W, what is there sum?
a) 800W
b) 2200W
c) 1.24W
d) None of these
Ans- b)
14 An important safety precaution you should take before starting
any electrical servicing job is to make sure that your
a) Electrical equipment should small
b) Body should not grounded
c) Electrical equipment should small
d) None of these
Ans-b)
15 A live electric line has fallen on your car. What’s the safest thing you can do?
a) run
b) Walk
c) Crawl
d) Stay in your car
Ans-d)
16 Power lines coming from the transformer to your house are covered and okay to touch.
a) True
b) False
c) Both a) and b)
d) None of these
Ans-b)
17 What will you do if you find a person is getting an electrical shock
a) pull the person away from equipment
b) pull the wire to withdraw cord of supply from board
c) cut the supply wire by scissor
d) push the person by wooden part
Ans-d)
18 The primary source of energy for the earths atmosphere is
a) energy from within the earth
b) the sun
c) erupting volcanoes
d) lighting discharges associated with thunderstorms.
Ans-b)
19 The size of the earth or ground wire is based on the…….
a) Maximum fault current carrying through the ground wire
b) Rated current carrying capacity of the service line.
c) Depends on the soil resistance
d) Both a) and c)
Ans-d)
20 Earth wire or ground wire is made of……
a) copper
b) aluminum
c) iron
d) galvanized steel
Ans-d)
21 The objective of earthing or grounding is…….
a) To provide as low resistance possible to the ground
b) To provide as high resistance possible to the ground
c) To provide flow of positive, negative and zero sequence currents…..
d) None of the above.
Ans-a)
22 Which of the following is the hazardous effect of electricity…….
a) Shock
b) Burns
c) Arc blast
d) All of the above
Ans- d)
23 Identify the wiring accessories among the following…….
a) Cables
b) Screw drivers
c) Nose plier
d) Hammer
Ans-a)
24 The earth potential is always …………for all practical purposes
a) high
b) low
c) zero
d) equal to unity
Ans-C
25 Wattmeter has two coils namely………….
a) Voltage and pressure coil
b) Voltage and resistance coil
c) Voltage and current coil
d) Pressure and resistance coil.
Ans-C
26 The damping force acts on the moving system of an indicating instrument only when it is
a) moving
b) stationary
c) near its full deflection
d) just starting to move
Ans-A
27 CTS stands for………..
a) Cab type sheathed
b) Clip type sheathed
c) Color type sheathed
d) None of the above
Ans-A
28 Solor cell is made up of
a) silicon
b) titanium
c) magnesium
d) telfon
Ans-A
29 A manually operating device used for opening and closing or for changing the connections of
circuit is called as
a) Relay
b) Fuse
c) Switch
d) Holder
Ans-C
30 Controlling torque of wattmeter is produced by
a) spring control
b) coil control
c) both a) and b)
d) none of the above
Ans-A