MCQOPTIONS
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MCQOPTIONS
This section includes 2 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 3-phase bridge converter is given a three-phase supply in the phase sequence R-Y-B. Let the neutral to R phase voltage be Vm sin t. The first SCR (connected to R phase) is fired at an angle of 15 . What is the maximum value at the output terminals at this instant? |
| A. | Vm/ 2 |
| B. | Vm |
| C. | 1.5 Vm |
| D. | 3 Vm |
| Answer» D. 3 Vm | |
| 2. |
In a 3-phase semi-converter, firing angle is less than 60 , as such each SCR and diode conduct respectively for __________ (in degrees) |
| A. | 60, 60 |
| B. | 90, 30 |
| C. | 120, 120 |
| D. | 180, 180 |
| Answer» D. 180, 180 | |