WIREMAN MULTIPLE CHOICE QUESTIONS (MCQ)

WIREMAN MULTIPLE CHOICE QUESTIONS (MCQ)

When a capacitor is charged through a DC supply
source for infinite time, the final current through it is -
(a) Determined by the resistor
(b) Half of the initial current
(c) Infinite
(d) Zero
Answer :  (d) Zero
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The Electronic grade solder has a Tin: Lead ratio of....
(a) 40:60
(b) 60:40
(c) 35:65
(d) 70:30
Answer :  (b) 60:40

Generally battery containers are made with -
(a) Hard Rubber
(b) Hard Plastic
(c) Polypropylene
(d) None of these
Answer :  (c) Polypropylene

The sheath is used in cables to.................
(a) Provide strength to the cable
(b) Provide proper insulation
(c) Prevent moisture from entering the cable
(d) Avoid chances of corrosion on strands
Answer :  (a) Provide strength to the cable
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Load of an electrical network determines -
(a) Resistance
(b) Impedance
(c) Current
(d) Voltage
Answer : (c) Current

The capacitors are used across AC supply for.................
(a) Power improvement
(b) Power factor improvement
(c) Current improvement
(d) Voltage improvement
Answer : (b) Power factor improvement

Which of the following bulbs will have the least resistance?
(a) 230 V, 60 W
(b) 230 V, 100 W
(c) 115 V.60 W
(d) 115 V, 100 W
Answer : (d) 115 V, 100 W

The phenomenon of induced magnetism lagging
behind the magnetizing force is known as ……
(a) Eddy currents
(b) Hysteresis
(c) Reluctance
(d) Permeability
Answer : (b) Hysteresis
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The..............are tools used for bending, seaming and
forming of sheet metal that cannot be done on any
regular machine
(a) Snips
(b) Vices
(c) Stakes
(d) Centre Punch
Answer : (c) Stakes

In full wave rectifiers the current rating of each
diode is ...... to /of the DC output current.
(a) Equal
(b) Half
(c) Double
(d) Three times
Answer : (b) Half