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Indicate the change in emf produced by a...

Indicate the change in emf produced by an ac dynamo in the following cases: the magnetic field is doubled

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will be doubled
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CHHAYA PUBLICATION-ALTERNATING CURRENT -EXERCISE (Very Short Answer Type)
  1. What is the reactance of pure resistances in an ac circuit?

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  2. If an LCR circuit is connected to a dc source , what will be the curre...

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  3. What will be the reactance if a current of frequency f flows through a...

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  4. What will be the reactance if a current of frequency f flows through a...

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  5. If the frequency of an circuit is increased, how would the reactance o...

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  6. If the frequency of an circuit is increased, how would the reactance o...

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  7. In an LR circuit, the alternating currentthe alternating emf by a cert...

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  8. In a CR circuit, the alternating current the alternating emf by a cert...

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  9. In an alternating series LCR circuit ,what is the phase difference bet...

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  10. When does LCR series circuit have minimum impedance?

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  11. What is the reactance of a capacitor of capacitance C at fHz?

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  12. What is the power factor of a circuit having a pure resistance only?

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  13. What is the power dissipated in an ac circuit in which voltage and cur...

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  14. What is the natural frequency of an LC oscillator?

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  15. Indicate the change in emf produced by an ac dynamo in the following c...

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  16. Indicate the change in emf produced by an ac dynamo in the following c...

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  17. If the area of the coil of an ac dynamo is halved, how would the emf g...

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  18. If the angular velocity of coil of an ac dynamo is doubled ,how would ...

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  19. By what factor would the output voltage of an ac generator change, if ...

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  20. The turns ratio of an ideal transformer is 4:1 what will be the curren...

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