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If the coils of a transformer are made u...

If the coils of a transformer are made up of thick wire, then ...

A

eddy currents loss will be more

B

magnetic flux leakage is reduced

C

joule's heating loss is increased

D

joule's heating loss is reduced

Text Solution

Verified by Experts

The correct Answer is:
D
As the wire is thicker, the resistance is less. So according to equation `I^2Rt`, when the heat is produced less due to Joule heating current, the electric energy dissipated less.
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  2. 240 A.C. mains supply is given to one transformer which draws 0.7 A fr...

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  3. If the coils of a transformer are made up of thick wire, then ...

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  4. Which device is used to increase or decrease A.C. voltage ?

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  5. A step up transformer has transformation ratio of 3: 2. What is the vo...

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  6. A step-up transformer operates on a 230V line and supplies 2A to a loa...

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  7. 240 A.C. mains supply is given to one transformer which draws 0.7 A fr...

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  8. The ratio of primary and secondary turns in a transformer is 1: 200. I...

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  9. The ratio of primary and secondary turns in a transformer is 3:2, if 3...

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  10. If current is not obtained from secondary coil of an ideal transformer...

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  11. If number of turns in primary and secondary coils is increased to two ...

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  12. If for an ideal step-up transformer current in primary is IP and curre...

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  13. A transformer has an efficiency of 80%. It works at 100V and 4kW. If s...

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  14. For step-down transformer value of transformation ratio is ……….

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  15. In a step-up transformer, use of 120 V line provides a potential diffe...

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  16. In a noiseless transformer, an alternating current of 2A is flowing in...

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  17. A low loss transformer has 250 V applied to primary and gives 4.6 V in...

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  18. In an ideal transformer, the voltage is stepped down from 11 kV to 220...

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  19. The ratio of number of turns in primary and secondary coil of a transf...

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  20. The number of turns in primary and secondary of a transformer are 1000...

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