MCQOPTIONS
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MCQOPTIONS
This section includes 7 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_single-phase_half_wave_inverter__________SCR(s)_are/is_gated_at_a_time.$ |
| A. | one |
| B. | two |
| C. | three |
| D. | none of the mentioned |
| Answer» B. two | |
| 2. |
Single phase half bridge inverters require? |
| A. | two wire ac supply |
| B. | two wire dc supply |
| C. | three wire ac supply |
| D. | three wire dc supply |
| Answer» E. | |
| 3. |
__________ based inverters do not require self-commutation. |
| A. | IGBT |
| B. | GTO |
| C. | PMOSFET |
| D. | SCR |
| Answer» E. | |
| 4. |
VSIs using GTOs are turned off by |
| A. | load commutation |
| B. | line commutation |
| C. | applying a negative gate pulse |
| D. | removing the base signal |
| Answer» D. removing the base signal | |
| 5. |
In a VSI (Voltage source inverter) |
| A. | the internal impedance of the DC source is negligible |
| B. | the internal impedance of the DC source is very very high |
| C. | the internal impedance of the AC source is negligible |
| D. | the IGBTs are fired at 0 degrees. |
| Answer» B. the internal impedance of the DC source is very very high | |
| 6. |
Line-commutated inverters have |
| A. | AC on the supply side and DC on the load side |
| B. | AC on both supply and load side |
| C. | DC on both supply and load side |
| D. | DC on the supply side and AC on the load side |
| Answer» C. DC on both supply and load side | |
| 7. |
Inverters converts |
| A. | dc power to dc power |
| B. | dc power to ac power |
| C. | ac power to ac power |
| D. | ac power to dc power |
| Answer» C. ac power to ac power | |