While conducting short-circuit test on a transformer the following side is short circuited? - PakMcqs

Related Mcqs:

1. The secondary of a current transformer is always short-circuited under operating conditions because it____________________?

   A. avoids core saturation and high voltage induction B. is safe to human beings C. protects the primary circuit D. none of the above...

2. When secondary of a current transformer is open-circuited its iron core will be__________?

   A. hot because of heavy iron losses taking place in it due to high flux density B. hot because primary will carry heavy current C. cool as there is no secondary current D. none of above will happen...

3. An open-circuit test on a transformer is conducted primarily to measure______________?

   A. insulation resistance B. copper loss C. core loss D. total loss E. efficiency F. none of the above...

4. During open circuit test of a transformer:

   A. primary is supplied rated voltage B. primary is supplied full-load current C. primary is supplied current at reduced voltage D. primary is supplied rated kVA...

5. During short circuit test iron losses are negligible because of _____________?

   A. the current on secondary side is negligible B. the voltage on secondary side does not vary C. the voltage applied on primary side is low D. full-load current is not supplied to the transformer...

6. Short circuit test on transformers is conducted to determine____________?

   A. hysteresis losses B. copper losses C. core losses D. eddy current losses...

7. Which of the following is the main advantage of an auto-transformer over a two winding transformer?

   A. Hysteresis losses are reduced B. Saving in winding material C. Copper losses are negligible D. Eddy losses are totally eliminated...

8. The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?

   A. Conservator B. Breather C. Bushings D. Buchholz relay...

9. Noise level test in a transformer is a______________?

   A. special test B. routine test C. type test D. none of the above...

10. A no-load test is performed on a transformer to determine_______________?

    A. core loss B. copper loss C. efficiency D. magnetising current E. magnetising current and loss...