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Electrician
Electrician Set-1
Capacitors
19

Capacitors MCQ - Electrician (Set-1) with Answers

19) The static electrical energy stored in a capacitor of 1.2 micro F at 3000 volts P.D. will be equal to :

3.6 joules

5.4 joules

1.8 joules

7.2 joules

Answer is:

5.4 joules

Capacitors MCQ - Electrician (Set-1) with Answers

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Related Capacitors MCQ - Electrician (Set-1) with Answers

20) The unit of capacitance is

coulomb

volt

farad

ampere

Answer is:

farad

The unit of capacitance is

21) If two capacitors of 2 micro F and 3 micro F are connected in series and then this group is connected across a capacitor of 4 micro F, the total capacity will be :

5.2 micro F

2.5 micro F

4.0 micro F

52 micro F

Answer is:

5.2 micro F

22) The total capacitance of a group of capacitors is increased when they are connected in :

series

parallel

series-parallel

parallel-series

Answer is:

parallel

23) Opening the switch of an inductive circuit sets an arc across the switch contacts due to large voltage induced and stored energy in magnetic field. The arc is suppressed in such circuits by connecting :

a capacitor across the supply

a capacitor across the switch contacts

arcing horns across the switch contacts

another small inductor across the switch contacts in reverse direction

Answer is:

a capacitor across the switch contacts

Capacitors MCQ - Electrician (Set-1) with Answers

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