MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
HVDC_TRANSMISSION_HAS_____________AS_COMPARED_TO_HVAC_TRANSMISSION.?$ |
| A. | smaller transformer size |
| B. | smaller conductor size |
| C. | higher corona loss |
| D. | smaller power transfer capabilities |
| Answer» C. higher corona loss | |
| 2. |
The_negative_polarity_is_used_in_the_monopolar_link_because_it$ |
| A. | uses less conductor size |
| B. | is safer |
| C. | produces less radio interference |
| D. | has less resistance |
| Answer» D. has less resistance | |
| 3. |
Usually __________ batteries are used in the UPS systems? |
| A. | NC |
| B. | Li-On |
| C. | Lead acid |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 4. |
No discontinuity is observed in case of |
| A. | short break static UPS configuration |
| B. | long break static UPS configuration |
| C. | no break static UPS configuration |
| D. | rotating type UPS configuration |
| Answer» D. rotating type UPS configuration | |
| 5. |
Static UPS requires __________ |
| A. | only rectifier |
| B. | only inverter |
| C. | both inverter and rectifier |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
__________ is used in the rotating type UPS system to supply the mains. |
| A. | DC motor |
| B. | Self excited DC generator |
| C. | Alternator |
| D. | Battery bank |
| Answer» D. Battery bank | |
| 7. |
_________ is used for critical loads where temporary power failure can cause a great deal of inconvenience. |
| A. | SMPS |
| B. | UPS |
| C. | MPS |
| D. | RCCB |
| Answer» C. MPS | |
| 8. |
Choose the incorrect statement. |
| A. | SMPS is less sensitive to input voltage variations |
| B. | SMPS is smaller as compared to rectifiers |
| C. | SMPS has low input ripple |
| D. | SMPS is a source of radio interference |
| Answer» D. SMPS is a source of radio interference | |
| 9. |
SPMS are based on the ________ principle. |
| A. | Phase control |
| B. | Integral control |
| C. | Chopper |
| D. | MOSFET |
| Answer» D. MOSFET | |
| 10. |
SMPS is used for |
| A. | obtaining controlled ac power supply |
| B. | obtaining controlled dc power supply |
| C. | storage of dc power |
| D. | switch from one source to another |
| Answer» C. storage of dc power | |