Certificate In Control Transformer Manufacturing Business

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Certificate In Control Transformer Manufacturing Business

Online Examination Detail:
Duration- 60 minutes.
Number of Questions- 30. (Multiple Choice Questions).
Maximum Marks- 100, Passing Marks- 40%.
There is no negative marking.

Candidate Details

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1. What is the thickness of laminations used in a transformer?

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2. Which of the following transformer, Buchholz’s relay can be fixed on?

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3. A transformer having 1000 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be

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4. Which of the following is not a basic element of a transformer ?

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5. What is the function of a breather in a transformer?

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6. A transformer has negative voltage regulation when its load power factor is

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7. In performing the short circuit test of a transformer

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8. Transformer ratings are given in _____________

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9. Which of the following is not a part of transformer installation?

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10. In an ideal transformer,

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11. The primary and secondary windings of an ordinary 2-winding transformer always have

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12. Transformer core is generally made of ___________

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13. What is Transformer?

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14. Primary winding of a transformer ______________

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15. What is the function of a transformer?

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16. Transformers are generally designed for ___________

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17. In a two-winding transformer, the e.m.f. per turn in secondary winding is always .......the induced e.m.f. power turn in primary.

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18. A transformer transforms

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19. In relation to a transformer, the ratio 20 : 1 indicates that

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20. Transformer cores are laminated in order to

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21. The main purpose of using core in a transformer is to

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22. What is the current transformer?

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23. The purpose of the transformer core is to provide ____________

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24. Current transformers are __________________

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25. What is the working principle of a Transformer?

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26. The primary and secondary induced e.m.fs. E1 and E2 in a two-winding transformer are always

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27. A step-up transformer increases

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28. The equivalent resistance of the primary of a transformer having K= 5 and R1= 0.1 ohm when referred to secondary becomes.......ohm.

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29. In a transformer, the leakage flux of each winding is proportional to the current in that winding because

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30. Which type of flux does transformer action need?