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Electrical Engineering - Transformers MCQs
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Electrical Engineering - Transformers MCQs
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25 Questions

1. The leakage flux in a transformer depends upon
2. Transformer breaths in when
3. In a transformer the resistance between its primary and secondary is
4. Distribution transformers are generally designed for maximum efficiency around
5. A transformer transforms
6. Which of the following loss in a transformer is zero even at full load ?
7. The noise produced by a transformer is termed as
8. A good voltage regulation of a transformer means
9. A transformer can have zero voltage regulation at
10. Noise level test in a transformer is a
11. What will happen if the transformers working in parallel are not connected with regard to polarity ?
12. Which of the following is not a part of transformer installation ?
13. Which of the following is not the standard voltage for power supply in India ?
14. Which of the following properties is not necessarily desirable for the material for transformer core ?
15. The secondary of a current transformer is always short-circuited under operating conditions because it
16. Delta/star transformer works satisfactorily when
17. Harmonics in transformer result in
18. Reduction in core losses and increase in permeability are obtained with transformer employing
19. Star/star transformers work satisfactorily when
20. Which of the following acts as a protection against high voltage surges due to lightning and switching ?
21. The function of breather in a transformer is
22. Which of the following property is not necessarily desirable in the material for transformer core ?
23. Spacers are provided between adjacent coils
24. The efficiency of a transformer will be maximum when
25. The path of the magnetic flux in transformer should have

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