MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Transformers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
On-load power factor for generator transformer is __________ |
| A. | high |
| B. | low |
| C. | can t define |
| D. | zero |
| Answer» B. low | |
| 2. |
What voltage of On-load tap-changer is required for unit transformer? |
| A. | 11 kV |
| B. | 23 kV |
| C. | 400 kV |
| D. | Not required |
| Answer» E. | |
| 3. |
For a unit transformer HV voltage must be _____________ |
| A. | 400 kV |
| B. | 200 kV |
| C. | 24 kV |
| D. | 100 kV |
| Answer» D. 100 kV | |
| 4. |
Operating load factor of station transformer must be _________ |
| A. | low |
| B. | high |
| C. | zero |
| D. | infinite |
| Answer» B. high | |
| 5. |
Which of the following does not follow the criteria of station transformer? |
| A. | LV at 11 kV |
| B. | HV at 275-400 kV |
| C. | Low impedance |
| D. | On-load tap-changer required |
| Answer» D. On-load tap-changer required | |
| 6. |
Station transformers are generally used for ____________ |
| A. | Providing generator voltage to transmission |
| B. | Providing power to load from transmission |
| C. | Isolating DC |
| D. | To supply power section auxiliary |
| Answer» E. | |
| 7. |
Generator transformers can undergo sudden load-changes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following is one of the criteria of selecting particular generator transformer? |
| A. | Low HV voltage |
| B. | Low LV currents |
| C. | High impedance |
| D. | On-load tap-changer |
| Answer» E. | |
| 9. |
In the CCGT, how many step-up transformers will require? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 10. |
Generator transformers are ________________ |
| A. | Step-up transformers |
| B. | Step-down transformers |
| C. | Auto-transformers |
| D. | One-one transformers |
| Answer» B. Step-down transformers | |