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DC Circuits Quiz

Authored by Lester Salvador

Engineering

University

Used 1+ times

DC Circuits Quiz
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122 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a resistance to which a constant voltage is applied is halved, what power dissipation will result?

Doubled

Halved

Stays the same

Quadrupled

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the reference point is changed to the earth point then any voltage taken w.r.t. the earth is known as

Absolute potential

Earth ground

Relative voltage

Absolute point

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of connecting loads in parallel?

It makes power consumption less

It provides greater efficiency

It increases the safety factor

It allows independent operations of loads

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following safety rules should be observed while working on live electric circuit?

Keep yourself well insulated from earth ground.

When making measurements in a live circuit place one hand behind your back or in your pocket.

Make resistance measurements only in a live circuit.

Both A and B.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Under the maximum power transfer condition, what is the power absorbed by the load resistance R_L?

526 W

562 W

625 W

652 W

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The hot resistance of an incandescent lamp is about _____ times its cold resistance.

10

50

5

100

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a resistor in a series circuit is shorted, the series current, I,

decreases

stays the same.

increases.

drops to zero.

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