AC FUNDAMENTALS, CIRCUIT AND CIRCUIT THEORY QUIZ

All of the listed here

Power is consumed in resistance and is equal to IR

Exchange of power takes place between inductor and supply line

Exchange of power takes place between capacitor and supply line

Less than unity

Zero

Unity

Greater than unity

None of the listed here

Inductance only

Capacitance only

Resistance only

0.9

1.414 Imax

0.707

0.5 Imax

Average voltage

None of the listed here

R.m.s. voltage

Peak voltage

Decreases with the increase in supply frequency

Increases with the increase in supply frequency

Becomes zero with the increase in supply frequency

Is unaffected by the supply frequency

15

5

2.5

10

Reactive power is more than actual power

Reactive power is more than apparent power

Actual power is more than reactive power

Apparent power is more than actual power

Current transformers

Auto transformers

Electronic equipment

Transformers

The current lags behind the voltage by 90°

The current is in phase with the voltage

The current leads the voltage by 90°

The current can lead or lag by 90°