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04
Jun

Electromagnetic Induction & Alternating Current Test20

Written by Administrator on 04 June 2013.

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Quick View of Questions:

  1. Hysteresis loss in a transformer can be minimised by _____.
  2. The coefficient of mutual induction between a pair of coils depends upon _____.
  3. Transformer is a device which converts _____.
  4. A circuit will have flat resonance, if the Q value is _____.
  5. The potential difference applied across L is _____.
  6. The inductive reactance in a.c. circuit _____.
  7. A transformer has 550 turns on the primary and operates on 220 V mains. To get an output voltage of 10 V, the number of turns in the secondary must be _____.
  8. According to Fleming’s right hand rule the direction of motion of the conductor is shown by _____.
  9. The unit of impedance is _____.
  10. The condition for resonance in LCR circuit is _____.

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