MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Determine the loss in the snubber circuit, if C = 0.545 F and supply is 200 V, 10 kHz. |
| A. | 233 W |
| B. | 133 W |
| C. | 333 W |
| D. | 233 W |
| Answer» C. 333 W | |
| 2. |
The ratio Vrms/ Vdc is known as |
| A. | Form factor |
| B. | Ripple factor |
| C. | Utilization factor |
| D. | None of the mentioned |
| Answer» B. Ripple factor | |
| 3. |
TRIAC is used in |
| A. | chopper |
| B. | speed control of induction machine |
| C. | speed control of universal motor |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
For a SCR, conduction angle is 120 when average on-state current is 20 A. When the conduction angle is halved the earlier value, the on-state average current will be? |
| A. | 5 A |
| B. | 40 A |
| C. | 10 A |
| D. | 20 A |
| Answer» C. 10 A | |
| 5. |
The reverse recovery time of a diode is trr = 3 s and the rate of fall of the diode current (di/dt) = 30 A/ s. Determine the storage charge. |
| A. | 145 s |
| B. | 135 s |
| C. | 0 |
| D. | none of the mentioned |
| Answer» C. 0 | |
| 6. |
Solid State Relays (SSRs) have a |
| A. | coil and contact arrangement |
| B. | optocoupler |
| C. | scr |
| D. | none of the mentioned |
| Answer» C. scr | |