MCQOPTIONS
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MCQOPTIONS
This section includes 3 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. |
In a 3-phase semi-converter, for firing angle less than 60 the freewheeling diode conducts for |
| A. | 30 |
| B. | 60 |
| C. | 120 |
| D. | 0 |
| Answer» E. | |
| 2. |
A 3-phase full converter feeds power to an R load of 10 . For a firing angle delay of 30 the load takes 5 kW. An inductor of large value is also connected to the load to make the current ripple free. Find the value of per phase input voltage. |
| A. | 133 V |
| B. | 230/ 3 V |
| C. | 191/ 3 V |
| D. | 298/ 3 V |
| Answer» D. 298/ 3 V | |
| 3. |
A three-phase full converter supplied from a 230 V source is working as a line commutated inverter. The load consists of RLE type with R = 5 , E = 200 V and L = 1 mH. A continues current of 10 A is flowing through the load, find the value of the firing angle delay. |
| A. | 119 |
| B. | 127 |
| C. | 156 |
| D. | 143 |
| Answer» B. 127 | |