ELECTRIC CIRCUITS QUIZ

The active and reactive power in an AC circuit are 10W and 20VAR respectively. What is the power factor?

0.866.

1.

0.577.

0.5.

TRUE ANSWER : ?
YOUR ANSWER : ?

In RLC parallel network R = 2 Ohm, L = 2mH and C = 1μF. Find the value of time constant?

4 msec

4 μsec

2 μsec

2 msec

TRUE ANSWER : ?
YOUR ANSWER : ?

The electrical conductivity of metal is typically of the order of (in ohm - m)

10 - 4.

105.

107.

10 - 6.

TRUE ANSWER : ?
YOUR ANSWER : ?

In series RLC circuit to get Q>1, which of the following is required?

XL = R

All of these

XL < R

XL > R

TRUE ANSWER : ?
YOUR ANSWER : ?

When the battery is being charged, the terminal voltage decreases with

increasing charging rate.

increasing temperature.

none of these.

increasing state of charge.

TRUE ANSWER : ?
YOUR ANSWER : ?

You have to replace 1500 Ω resistor in radio. You have no 1500 Ω resistor but have several 1000 Ω ones which you would connect

two in parallel and one in series.

three in parallel.

three in series.

two in parallel.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of following capacitors preferred for high frequency circuits?

Mica capacitor.

Air capacitor.

Glass capacitor.

Electrolytic capacitor.

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the frequency of domestic power in India?

220 Hz.

70 Hz.

60 Hz.

50 Hz.

TRUE ANSWER : ?
YOUR ANSWER : ?

A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

0.05 F

0.5 F

0.2 F

0.02 F

TRUE ANSWER : ?
YOUR ANSWER : ?

Select the wave that has the least value of form factor.

Sine wave.

Triangular wave.

Rectangular wave.

Square wave.

TRUE ANSWER : ?
YOUR ANSWER : ?

↑