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A transformer is based on the principle ...

A transformer is based on the principle of

A

mutual induction

B

self induction

C

Ampere's law

D

X-ray crystallography

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The correct Answer is:
A
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A: The power output of a practical transformer is always smaller than the power input. R: A transformer works on the principle of mutual induction.

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
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  2. the wave of electric and magnetic field both varying in space and time...

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  5. The device that does not work on the principle of mutual induction is

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  6. A transfomer is employed to

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  7. What is increase in step-down transformer?

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  8. A device which converts low ac voltage at high current into high ac vo...

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  9. Why are electromagnets made of soft iron?

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  10. The transformation ratio in the step -up transformer is

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  11. In a transformer 220 ac voltage is increased to 2200 volts. If the nu...

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  12. The ratio of secondary to the primary turns in a transformer is 3:2. I...

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  13. The primary winding of a transformer has 100 turns and its secondary w...

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  14. A step-down transformer is connected to 2400 volts line and 80 amperes...

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  15. A loss free transformer has 500 turns on its primary winding and 2500 ...

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  16. An ideal transformer has 100 turns in the primary and 250 turns in the...

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  17. The alternating voltage induced in the secondary coil of a transformer...

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  18. We can reduce eddy currents in the core of transformer

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  19. A 100% efficient transformer has 100 turns in the primary and 25 turns...

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  20. The efficiency of transfomer is very high because

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