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A transformer works on the principle of...

A transformer works on the principle of

A

self induction

B

Mutual induction

C

Eddy current

D

None of these

Text Solution

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The correct Answer is:
B
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VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -IMPECCABLE
  1. An alternating current is given by I = i1 cos omegat + i2 sin omegat...

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  2. Core of transformer is made up

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  3. A transformer works on the principle of

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

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  5. In a step - down transformer, the number of turns in

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  6. A step-up transformer operates on a 230 V line and supplies a current ...

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  7. Use of eddy is done on the following except :

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  8. By what percentage the impedance in an AC series circuit should be inc...

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  9. For high frequency, a capacitor offers

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  10. A six pole generotar with fixed field excitation developes an e.m.f. o...

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  11. Voltage in the secondary coil of a transfomer does not depend upon

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  12. When power is drawn from the secondary coil of the transformer, the dy...

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  13. What will increase in step-down transformer?

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  14. In a step up transformer the turn ratio is 1 : 2. A Leclanche cell (e...

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  15. The e.m.f. induced in a secondary coil is 20000 V when the current bre...

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  16. Two coils are wound on the same iron rod so that the flux generat...

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  17. A current of 5A is flowing at 220V in the primary coil of a transforme...

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  18. A transformer has 1500 turns in the primary coil and 1125 turns in th...

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  19. An electric generator is based on :

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  20. The primary and secondary coils of a transforme have 50 and 1500 turns...

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