Most expected MCQ Electrician Wireman ITI trade

1➤ Input ripple of SMPS is

highlowvery lownil

2➤ Determine the amount of charge stored on either plate of the capacitor of 2μF when connected to 9 V battery?

36 μC18 μC4.5 μC2 μC

3➤ Mention the material used for making tong?

AluminiumCast IronStainless steelMild steel

4➤ What type of fire extinguisher is used in electric fire?

Soda acid water typeHalon/CTC typePowder typeFoam type

5➤ The luminous-flux emitted in unit solid angle by a light source having a of one candela is called: luminous-intensity

One lumenLuminanceIlluminationOne lux

6➤ What is the advantage of a parallel twin-tube fluorescent lamp circuit?

The total current drawn by the circuit is almost zeroThe true power consumption of the circuit is almost zeroThe power factor of the circuit becomes 1 and the tube-lights do not flickerA very small current flows in both the branches

7➤ The starter of a fluorescent tube lamp has been removed from its holder after the tube is lighted what will happen to the function of the tube lamp?

Tube will begin to hum very muchTube lamp will begin to flicker Tube lamp will go out immediatelyTube will operate normally

8➤ Which one of the lamps mentioned below has more time delay when compared to other lamps?.

Neon lampSodium vapour lampMercury vapour lampTube lamp

9➤ Fuse is a safety device that is used to protect a circuit from-

Leakage currentUnder currentUnder voltageExcess current

10➤ Bundled conductors are used to:

increase frequencyreduce series reactanceIncrease radio interference reduce shunt capacitance

11➤ Which of the following limits duration and amplitude of flow of current at electric substation?

Guard wireWave trapRelayLightning arrestor

12➤ If the insulation between two conductors is faulty, then what will the flow of current between them be called? .

Excessive current faultEarthing fault Short circuit faultOpen circuit fault

13➤ Which of the following test is used to locate the location of earth fault in a cable?

open circuit testcontinuity testmurray loop testshort circuit test

14➤ How are SMD components in bulk mounted on PCB? .

Using soldering potUsing soldering ironUsing hot air blowerUsing wave soldering machine

15➤ GSM frequency allocation in India is:

700 MHz/1,500 MHz600 MHz/1,200 MHz500 MHz/1,000 MHz900 MHz/1,800 MHz

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