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Electrical Transformer Quiz #1.
- 25 Questions (Selected Randomly)
- 25 Marks (1 Mark/Question)
- 25 Minutes of Time
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- Answered
- Review
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Question 1 of 25
1. Question
If a transformer core has air gaps, then …..
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Question 2 of 25
2. Question
The flux in the core of a single-phase transformer is …..
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Question 3 of 25
3. Question
When a primary winding is connected with the DC supply …..
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Question 4 of 25
4. Question
The open-circuit test on the transformer gives …..
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Question 5 of 25
5. Question
The basic function of a transformer is to change …..
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Question 6 of 25
6. Question
In an ordinary transformer, ….. does not change.
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Question 7 of 25
7. Question
The efficiency of power transformer is …..
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Question 8 of 25
8. Question
The transformer transform the …..
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Question 9 of 25
9. Question
The iron core in a transformer provides a ….. part to the main flux.
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Question 10 of 25
10. Question
When voltage is transformed into primary to secondary then, it is …..
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Question 11 of 25
11. Question
The core flux in transformer depends mainly on …..
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Question 12 of 25
12. Question
If the applied voltage to the transformer primary is increased by the keeping the V/F ratio fixed, then the magnetization current and core loss will …..
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Question 13 of 25
13. Question
The power factor of power transformer on no load will be about …..
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Question 14 of 25
14. Question
The power factor of transformer on no load is poor due to …..
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Question 15 of 25
15. Question
On which of the following factor does hysteresis loss depend?
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Question 16 of 25
16. Question
The positive voltage regulation is an indication of ….. load.
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Question 17 of 25
17. Question
The primary and secondary winding of power transformer always has…..
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Question 18 of 25
18. Question
The flux created by the current flowing through the primary winding induces EMF in …..
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Question 19 of 25
19. Question
A transformer action requires a …..
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Question 20 of 25
20. Question
In a transformer ….. decrease with the increases in leakage flux.
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Question 21 of 25
21. Question
The flux in transformer core …..
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Question 22 of 25
22. Question
The mutual flux in a loaded transformer can be varied by varying …..
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Question 23 of 25
23. Question
If the transformer core has air gaps then, …..
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Question 24 of 25
24. Question
The iron core is used to ….. of the transformer.
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Question 25 of 25
25. Question
A transformer is so designed that primary and secondary have …..