BEE FREE BEE Bachelor of Electrical Engineering DC and AC Circuit Analysis Questions and Answers 2

Question 1

A 10 Ω resistor and a 20 Ω resistor are connected in parallel across a 40 V DC source. What is the total current drawn from the source?

Accepted Answer

6 A

Answer

4 A

Answer

2 A

Answer

3 A

Question 2

In a series RLC AC circuit at resonance, which of the following is true?

Accepted Answer

The impedance equals the resistance only

Answer

The impedance is at its maximum value

Answer

The current is at its minimum value

Answer

The power factor is zero

Question 3

What is the phase angle between voltage and current in a purely capacitive AC circuit?

Accepted Answer

Current leads voltage by 90°

Answer

Voltage leads current by 90°

Answer

They are in phase

Answer

Current leads voltage by 45°

Question 4

A DC circuit has three resistors of 4 Ω, 6 Ω, and 12 Ω connected in parallel. What is the equivalent resistance?

Accepted Answer

2 Ω

Answer

4 Ω

Answer

3 Ω

Answer

1.5 Ω

Question 5

In an AC circuit, the real power consumed by a load with an impedance of 5∠60° Ω carrying 4 A rms is:

Accepted Answer

40 W

Answer

80 W

Answer

20 W

Answer

69.3 W

Question 6

According to Kirchhoff's Voltage Law (KVL), the algebraic sum of all voltages around any closed loop in a circuit is:

Accepted Answer

Zero

Answer

Equal to the source voltage

Answer

Equal to the total resistance times current

Answer

Dependent on the number of nodes