Analog Lab: Pre-Quiz and Viva Questions (MCQ Format)

What is the phase angle (θ) in a pure RC circuit?

• 0°

• 45°

• 90°

• 180°

In an RC circuit, the current leads the applied voltage by:

• 0°

• 45°

• 90°

• 180°

The capacitive reactance (Xc) of a capacitor is given by:

• Xc = 1/2πfC

• Xc = 2πfC

• Xc = 2πfL

• Xc = 1/2πfL

In an RC circuit, if the frequency increases, the capacitive reactance:

• Increases

• Decreases

• Remains the same

• Becomes zero

The unit of capacitive reactance is:

• Ohm

• Farad

• Henry

• Volt

If R = 10 kΩ and C = 0.1 μF, what is the time constant (RC) of the circuit?

• 0.1 ms

• 1 ms

• 10 ms

• 100 ms

In an RC circuit, the phase angle (θ) is 0° when:

• R = 0

• C = 0

• R = ∞

• C = ∞

The current in an RC circuit is maximum when the phase angle is:

• 0°

• 45°

• 90°

• 180°

The phase angle in an RC circuit depends on:

• Only R

• Only C

• Both R and C

• Neither R nor C

In an RC circuit, if the resistance is increased, the phase angle:

• Increases

• Decreases

• Remains the same

• Becomes zero