Inductive And Non Inductive Circuits(Engineering > Electrical Engineering ) Questions and answers for exam Preparation

Question 1. Among the following, which is the right formula for growth in an inductive circuit?

a
b
c
d

Explanation:-

Answer: Option D. -> d
Answer: (d).d

Question 2. If the switch is opened at t=0, what is the current in the circuit?

0A
1A
2A
3A

Explanation:-

Answer: Option C. -> 2A
Answer: (c).2A

Question 3. What is Helmholtz equation?

a
b
c
d

Explanation:-

Answer: Option B. -> b
Answer: (b).b

Question 4. If the switch is closed at t=0, what is the current in the circuit?

0A
10A
20A
30A

Explanation:-

Answer: Option A. -> 0A
Answer: (a).0A

Question 5. What is the voltage across the inductor at t=0?

0V
20V
60V
58V

Explanation:-

Answer: Option C. -> 60V
Answer: (c).60V

Question 6. What is the time constant of an inductive circuit?

LR
R/L
1/LR
L/R

Explanation:-

Answer: Option D. -> L/R
Answer: (d).L/R

Question 7. Calculate the inductance in an inductive circuit whose time constant is 2s and the resistance is 5 ohm.

10H
20H
5H
15H

Explanation:-

Answer: Option A. -> 10H
Answer: (a).10H

Question 8. Calculate the resistance in an inductive circuit whose time constant is 2s and the inductance is 10H.

7ohm
10ohm
2ohm
5ohm

Explanation:-

Answer: Option D. -> 5ohm
Answer: (d).5ohm

Question 9. The charging time constant of a circuit consisting of an inductor is the time taken for the current in the inductor to become __________% of the initial current.

33
63
37
36

Explanation:-

Answer: Option B. -> 63
Answer: (b).63

Question 10. Calculate the time constant of an inductive circuit having resistance 5 ohm and inductance 10H.

2s
4s
5s
0s

Explanation:-

Answer: Option A. -> 2s
Answer: (a).2s