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Define the term 'root mean square' (rms)...

Define the term 'root mean square' (rms) value of alternating current.

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Expression of an alternating current is I=0.5sin100pitA . Determine the frequency , peak value and rms value of the current.

CHHAYA PUBLICATION-ALTERNATING CURRENT -EXAMINATION ARCHIVE WITH SOLUTIONS (WBCHSE)
  1. An ac having a peak value 1.41 A is used to heat a wire. A dc producin...

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  2. An ac voltage e=E0sinomegat is applied across an ideal inductor of sel...

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  3. The instantaneous voltage from an ac source is given by e=200sin 314t ...

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  4. State the condition under which the phenomenon of resonance occurs in ...

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  5. A series LCR circuit acts as a purely resistive circuit, when

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  6. What is Q-factor?

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  7. Define the term 'root mean square' (rms) value of alternating current.

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  8. An ac source e=E0sinomegat is applied across an ideal inductor of indu...

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  9. IF L is 100mH and the applied ac source frequency be 50 Hz, find the i...

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  10. Define wattless current.

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  11. Show that in ac circuit the average power dissipated per cycle in a pu...

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  12. Compare between inductive reactance and capacitive reactance.

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  13. State the factors on which the peak value of alternating emf depends.

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  14. In an LCR series combination, R=400Omega, L=100 mH and C=1muF. This co...

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  15. State the working principle of ac generator.

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  16. Why is the use of ac voltage preferred over dc voltage?

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  17. The power factor of LR circuit is 1/sqrt3. IF the frequency of ac be d...

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  18. IF the rotating speed of a dynamo is doubled, the induced electromotiv...

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  19. The number of turns of the primary and secondary of a transformer are ...

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  20. What is the rms value of the current i=5sqrt2sin100pitA?

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