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The magnitude of the e.m.f. across the s...

The magnitude of the e.m.f. across the secondary of a transformer does not depend on

A

The number of thef turns in the primary

B

The number of the turns in the secondary

C

The magnitude of the e.m.f applied across the primary

D

The resistance of the primary and the secondary

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The number of the turns in the primary coil of a transformer is 10 times than the same in the secondary coil . If the voltage across the primary is 20 V then find the voltage across the secondary .

NARAYNA-ALTERNATING CURRENT-C.U.Q
  1. A transformer changes the voltage

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  2. A step up transformer is connected on the primary side to a rechargabl...

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  3. The ratio of primary voltage to secondary voltage in a transformer is ...

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  4. In a step down transformer, the number of turns in the primary is alwa...

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  5. The transformer ratio of a step up transformer is

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  6. A setup transformer develops 440 V in secondary coil for an input of 2...

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  7. Assertion (A) : If changing current is flowing through a machine with ...

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  8. Transformers are used

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  9. The magnitude of the e.m.f. across the secondary of a transformer does...

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  10. For an ideal transformer ratio of output ot the input power is always

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  11. Consider the following two statements A and B and identify the correct...

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  12. Statement (A) : Flux leakage in a transformer can be minimized by wind...

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  13. Statement (A) : In high current low voltage windings of a transformer ...

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  14. Statement (A) : Step up transformer converts low voltage, high current...

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  15. To reduce the iron losses in a transformer, the core must be made of a...

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  16. Maximum efficiency of a transformer depends on

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  17. For an LCR series circuit with an aac source of angular frequency omeg...

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  18. The value of current in tow series LCR circuits at resonance is same, ...

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  19. When an ac source of emfe=E(0) sin (100 t) is connected across a circu...

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  20. An AC voltage source of variable angular frequency (omega) and fixed a...

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