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This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
1. |
Find the time taken for the current in an inductor to change to 2A from 0A if the power in the inductor is 5W. The value of inductance is 10H. |
A. | 1s |
B. | 2s |
C. | 3s |
D. | 4s |
Answer» E. | |
2. |
Calculate the current in an inductor if the energy stored is 160J and the inductance is 20H. |
A. | 1A |
B. | 2A |
C. | 3A |
D. | 4A |
Answer» E. | |
3. |
Calculate the value of emf in an inductor if the value of inductance is 15H and an average current of 5A flows through it in 10s. |
A. | 15V |
B. | 7.5V |
C. | 10V |
D. | 5.5V |
Answer» C. 10V | |
4. |
What is the energy stored in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate? |
A. | LI/2 |
B. | LI2/2 |
C. | L/2I |
D. | L/2I2 |
Answer» C. L/2I | |
5. |
CALCULATE_THE_CURRENT_IN_AN_INDUCTOR_IF_THE_ENERGY_STORED_IS_160J_AND_THE_INDUCTANCE_IS_20H.?$ |
A. | 1A |
B. | 2A |
C. | 3A |
D. | 4A |
Answer» E. | |
6. |
Find_the_time_taken_for_the_current_in_an_inductor_to_change_to_2A_from_0A_if_the_power_in_the_inductor_is_5W._The_value_of_inductance_is_10H.$ |
A. | 1s |
B. | 2s |
C. | 3s |
D. | 4s |
Answer» E. | |
7. |
Calculate the value of emf in an inductor if the value of inductance is 15H and an average current of 5A flows through it in 10s? |
A. | 15V |
B. | 7.5V |
C. | 10V |
D. | 5.5V |
Answer» C. 10V | |
8. |
Calculate the emf induced in an inductor if the inductance is 10H and the current is 2A in 4s. |
A. | 2.5V |
B. | 1.5V |
C. | 3.5V |
D. | 5V |
Answer» B. 1.5V | |
9. |
Calculate the value of stored energy in an inductor if the value of inductance is 20H and 4A of current flows through it. |
A. | 220J |
B. | 150J |
C. | 190J |
D. | 160J |
Answer» E. | |
10. |
Calculate the power in an inductive circuit if the inductance is 10H, the current flowing in the inductor is 2A in 4s. |
A. | 50W |
B. | 4W |
C. | 5W |
D. | 10W |
Answer» D. 10W | |
11. |
Find the average current in an inductor if the total current in the inductor is 26A. |
A. | 10A |
B. | 26A |
C. | 13A |
D. | 5A |
Answer» D. 5A | |
12. |
What is the power in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate? |
A. | LI/2t |
B. | LI<sup>2</sup>/2t |
C. | L/2It |
D. | L/2I<sup>2</sup>t |
Answer» C. L/2It | |
13. |
If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current? |
A. | I |
B. | I/2 |
C. | I/4 |
D. | 0 |
Answer» C. I/4 | |