AC Circuit Quiz

Which of the following represents the effective value of an AC quantity?

• Peak value

• Average value

• RMS value

• Instantaneous value

In a purely resistive AC circuit, the current is:

• Lagging the voltage

• Leading the voltage

• In phase with voltage

• Zero

The form factor of a sinusoidal waveform is:

• 1

• 1.414

• 1.11

• 2

What is the peak factor for a sinusoidal voltage?

• 1.11

• 1.414

• 0.707

• 2

In a purely inductive circuit, the current:

• Lags the voltage by 90°

• Leads the voltage by 90°

• Is in phase

• Is zero

The phasor diagram helps in determining the:

• Current direction

• Time domain response

• Phase relationship between quantities

• Total power

The unit of reactive power is:

• Watt

• Volt

• VAR

• Ohm

Which of the following is the triangle representing power components in AC?

• Phase triangle

• Power triangle

• Current triangle

• Voltage triangle

In a capacitive circuit, the current:

• Lags the voltage

• Is in phase with voltage

• Leads the voltage

• Is zero

Power factor is defined as the ratio of:

• Reactive power to apparent power

• Active power to apparent power

• Apparent power to active power

• Active power to reactive power