MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Transformers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Short circuit method is used for _____________ |
| A. | drying out the transformer and oil simultaneously in the transformer tank |
| B. | drying the transformer only, out of its tank. |
| C. | for any type of drying |
| D. | never used |
| Answer» D. never used | |
| 2. |
Which readings should be taken while drying out process of transformer? |
| A. | Insulation reading between HV and LV |
| B. | Temperature |
| C. | Time |
| D. | Insulation, temperature, time all readings |
| Answer» E. | |
| 3. |
For 400 kV transformer, moisture content required is _______________ |
| A. | below 0.1% |
| B. | below 0.5% |
| C. | above 0.5% |
| D. | below 1% |
| Answer» C. above 0.5% | |
| 4. |
WHICH_READINGS_SHOULD_BE_TAKEN_WHILE_DRYING_OUT_PROCESS_OF_TRANSFORMER??$ |
| A. | Insulation reading between HV and LV |
| B. | Temperature |
| C. | Time |
| D. | Insulation, temperature, time all readings |
| Answer» E. | |
| 5. |
Short_circuit_method_is_used_for______________$ |
| A. | drying out the transformer and oil simultaneously in the transformer tank |
| B. | drying the transformer only, out of its tank. |
| C. | for any type of drying |
| D. | never used |
| Answer» D. never used | |
| 6. |
For 400 kV transformer, moisture content required is ______________? |
| A. | below 0.1% |
| B. | below 0.5% |
| C. | above 0.5% |
| D. | below 1% |
| Answer» C. above 0.5% | |
| 7. |
After site erection vacuum is made with pressure range of ___________ |
| A. | 1 mbar |
| B. | 3 mbar |
| C. | 7 mbar |
| D. | 15 mbar |
| Answer» D. 15 mbar | |
| 8. |
Materials used in construction of transformer are stressed ______________ |
| A. | electrically |
| B. | mechanically |
| C. | both electrically and mechanically |
| D. | magnetically |
| Answer» D. magnetically | |
| 9. |
When oil filling procedure has to be started? |
| A. | After fitting of all bushings |
| B. | After replacing access covers |
| C. | After erection of conservator and Buchholz pipework |
| D. | After fitting bushings, replacing covers, erecting pipework |
| Answer» E. | |
| 10. |
If any transformer is not in operation for some months, still it is advisable to keep it filled with _______________ |
| A. | nitrogen |
| B. | oil |
| C. | normal air |
| D. | hydrogen helium mixture |
| Answer» C. normal air | |
| 11. |
While transformer is transported, its valves are _______________ |
| A. | kept open |
| B. | closed with blanking plates |
| C. | can be kept open or can be closed according to type |
| D. | valves are absent |
| Answer» C. can be kept open or can be closed according to type | |
| 12. |
When all additional clamping is removed from a transformer? |
| A. | When transformer is made start |
| B. | After start of transformer function |
| C. | Instant before start of transformer function |
| D. | At the time of installations |
| Answer» E. | |
| 13. |
Transformers are generally designed for ___________ |
| A. | on-site problem solving |
| B. | one-time use |
| C. | off-site problem solving |
| D. | short-time use |
| Answer» B. one-time use | |