MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
A voltage commutated chopper has the following parameters:Vs = 220 V. Commutation circuit: L = 20 H and C = 50 F. |
| A. | nFind the effective on period for a constant load current of 80 A and Ton = 800 secs. |
| B. | 1.075 s |
| C. | 10.75 ms |
| D. | 1075 s |
| E. | 1.075 sec |
| Answer» D. 1075 s | |
| 2. |
A current commutated chopper is fed from a source of 230 V. Its commutating components are L = 20 H and C = 50 F. Find the value of peak commutating current. |
| A. | 233 A |
| B. | 59 A |
| C. | 363 A |
| D. | 198 A |
| Answer» D. 198 A | |
| 3. |
A voltage commutated chopper feeds power to an electric car (battery-powered). The battery voltage is 60 V. Starting current is 60 A and the SCR turn-off time is 20 s. Calculate the value of inductance (L) required for the commutating circuit. |
| A. | 400 H |
| B. | 40 nH |
| C. | 40 H |
| D. | 0.4 mH |
| Answer» D. 0.4 mH | |
| 4. |
A voltage commutated chopper feeds power to an electric car (battery-powered). The battery voltage is 60 V. The SCR turn-off time is 20 s. Calculate the value of capacitor (C) required for the commutating circuit. |
| A. | 400 F |
| B. | 40 nF |
| C. | 40 F |
| D. | 0.4 mF |
| Answer» D. 0.4 mF | |