MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
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. |
| A. | 33 |
| B. | 63 |
| C. | 37 |
| D. | 36 |
| Answer» C. 37 | |
| 2. |
Calculate the inductance in an inductive circuit whose time constant is 2s and the resistance is 5 ohm. |
| A. | 10H |
| B. | 20H |
| C. | 5H |
| D. | 15H |
| Answer» B. 20H | |
| 3. |
Calculate the resistance in an inductive circuit whose time constant is 2s and the inductance is 10H. |
| A. | 7ohm |
| B. | 10ohm |
| C. | 2ohm |
| D. | 5ohm |
| Answer» E. | |
| 4. |
The charging time constant of a circuit consisting of an inductor is the time taken for the voltage in the inductor to become __________ % of the initial voltage. |
| A. | 33 |
| B. | 63 |
| C. | 37 |
| D. | 36 |
| Answer» D. 36 | |
| 5. |
Calculate the inductance in an inductive circuit whose time constant is 2s-1 and the resistance is 5 ohm. |
| A. | 10H |
| B. | 20H |
| C. | 5H |
| D. | 15H |
| Answer» B. 20H | |
| 6. |
Calculate the resistance in an inductive circuit whose time constant is 2s-1 and the inductance is 10H. |
| A. | 7ohm |
| B. | 10ohm |
| C. | 2ohm |
| D. | 5ohm |
| Answer» E. | |
| 7. |
Calculate the time constant of an inductive circuit having resistance 5 ohm and inductance 10H. |
| A. | 2s |
| B. | 4s |
| C. | 5s |
| D. | 10s |
| Answer» B. 4s | |
| 8. |
What is the time constant of an inductive circuit? |
| A. | LR |
| B. | R/L |
| C. | 1/LR |
| D. | L/R |
| Answer» E. | |
| 9. |
The charging time constant of a circuit consisting of an inductor is the time taken for the voltage in the inductor to become __________% of the initial voltage. |
| A. | 33 |
| B. | 63 |
| C. | 37 |
| D. | 36 |
| Answer» C. 37 | |
| 10. |
Among the following, which is the right formula for growth in an inductive circuit? |
| A. | VL=V(1-e<sup>-t</sup>/time constant) |
| B. | VL=V(1-e<sup>t</sup> /time constant) |
| C. | VL=(1-e<sup>-t</sup> /time constant) |
| D. | VL=V(e<sup>-t</sup> /time constant) |
| Answer» B. VL=V(1-e<sup>t</sup> /time constant) | |
| 11. |
In a pure inductive circuit, the power factor is? |
| A. | Maximum |
| B. | Minimum |
| C. | 0 |
| D. | Infinity |
| Answer» D. Infinity | |