MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following informations are not obtained from short-circuit test? |
| A. | I, II |
| B. | II, III |
| C. | I, II, IV |
| D. | II, IIIView Answer |
| Answer» E. | |
| 2. |
Which of the following conditions have to ensured for a open-circuit test? |
| A. | B, D |
| B. | A, B, C |
| C. | B, C, D |
| D. | A, C, DView Answer |
| Answer» E. | |
| 3. |
Transformers with high leakage impedance is used in ___________ |
| A. | arc welding |
| B. | power distribution |
| C. | power generating terminals |
| D. | none of the mentioned |
| Answer» B. power distribution | |
| 4. |
Which of the following conditions have to ensured for a short-circuit test? |
| A. | A, B |
| B. | A, B, C |
| C. | B, C |
| D. | A, CView Answer |
| Answer» B. A, B, C | |
| 5. |
A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________ |
| A. | will be wrong |
| B. | will be accurate |
| C. | of ammeter will burn |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
A single phase transformer of 2000/200 V having rated l.v. current of 100 A has to undergo short circuit test on l.v. side. Which of the below instruments range should be used? |
| A. | 200V,10A |
| B. | 20V, 10A |
| C. | 300V,100A |
| D. | 200V,50A |
| Answer» B. 20V, 10A | |
| 7. |
A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v. side. Which of the below instruments range should be used? |
| A. | 6A, 200V |
| B. | 150A, 22V |
| C. | 60A, 220V |
| D. | 6A, 20V |
| Answer» B. 150A, 22V | |
| 8. |
To conduct the short circuit test, test is conducted on the ___________ |
| A. | l.v. side |
| B. | h.v. side |
| C. | primary |
| D. | secondary |
| Answer» C. primary | |
| 9. |
To conduct the open circuit test, test is conducted on the _____________ |
| A. | l.v. side |
| B. | h.v. side |
| C. | primary |
| D. | secondary |
| Answer» B. h.v. side | |
| 10. |
Which of the following informations are obtained from short-circuit test? |
| A. | I, II, IV |
| B. | II, III |
| C. | I, II, IV |
| D. | II, III, IVView Answer |
| Answer» B. II, III | |
| 11. |
The open circuit test results in finding which of the following parameters? |
| A. | I, II, III |
| B. | I, II |
| C. | II, III |
| D. | I, IIIView Answer |
| Answer» B. I, II | |
| 12. |
Power required during the open circuit and short circuit test is? |
| A. | losses incurring in the transformer |
| B. | executing the power requirements by measuring instruments |
| C. | power for the core losses only |
| D. | all of the mentioned |
| Answer» B. executing the power requirements by measuring instruments | |
| 13. |
A_SINGLE_PHASE_TRANSFORMER_OF_2000/200_V_HAVING_RATED_L.V._CURRENT_OF_100_A_HAS_TO_UNDERGO_SHORT_CIRCUIT_TEST_ON_L.V._SIDE._WHICH_OF_THE_BELOW_INSTRUMENTS_RANGE_SHOULD_BE_USED??$ |
| A. | 200V,10A |
| B. | 20V, 10A |
| C. | 300V,100A |
| D. | 200V,50A |
| Answer» B. 20V, 10A | |
| 14. |
A_single_phase_transformer_of_2200/220_V_having_rated_l.v._current_of_150_A_has_to_undergo_open_circuit_test_on_h.v_side._The_instruments_used_are_voltmeter$ |
| A. | |
| B. | will be wrong |
| C. | will be accurate |
| Answer» D. | |
| 15. |
Transformers with high leakage impedance is used in |
| A. | arc welding |
| B. | power distribution |
| C. | power generating terminals |
| D. | none of the mentioned |
| Answer» B. power distribution | |
| 16. |
A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v. side.Which of the below instruments range should be used? |
| A. | 6A,200V |
| B. | 150A,22V |
| C. | 60A,220V |
| D. | 6A,20V |
| Answer» B. 150A,22V | |
| 17. |
To conduct the short circuit test, test is conducted on the |
| A. | l.v. side |
| B. | h.v. side |
| C. | primary |
| D. | secondary |
| Answer» C. primary | |
| 18. |
To conduct the open circuit test, test is conducted on the |
| A. | l.v. side |
| B. | h.v. side |
| C. | primary |
| D. | secondary |
| Answer» B. h.v. side | |
| 19. |
Which of the below estimations require results of both open circuit test and short circuit test? |
| A. | Efficiency |
| B. | Equivalent impedance of one side of the winding |
| C. | Voltage regulation for exact circuit |
| D. | All of the mentioned |
| Answer» B. Equivalent impedance of one side of the winding | |
| 20. |
Power required during the open circuit and short circuit test is |
| A. | losses incurring in the transformer |
| B. | executing the power requirements by measuring instruments |
| C. | power for the core losses only |
| D. | all of the mentioned |
| Answer» B. executing the power requirements by measuring instruments | |