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An alternating emf of E=20sin 1000tV is ...

An alternating emf of E=20sin 1000tV is applied on a circuit containing a pure resistance of `25Omega` in series with a coil of self-inductance 40 mH and resistance `15Omega`. Find out the power factor of the circuit , Also , find out this capacitance of a capacitor that should be connected in series to raise the power factory to unity.

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The correct Answer is:
0.707;`25muF`
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CHHAYA PUBLICATION-ALTERNATING CURRENT -Problem Set-II
  1. When 100 volt dc is applied across a conducting coil, a current of 1A ...

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  2. When 100 volt dc is applied across a conducting coil, a current of 1A ...

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  3. An LR circuit contains a resistance of 40Omega and an inductance of 25...

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  4. An alternating emf of E=20sin 1000tV is applied on a circuit containin...

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  5. An alternating emf of E=20sin 1000tV is applied on a circuit containin...

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  6. A sinusoidal voltage v=200 sin 314 t is applied to a resistor of 10Ome...

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  7. A sinusoidal voltage v=200 sin 314 t is applied to a resistor of 10Ome...

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  8. A sinusoidal voltage v=200 sin 314 t is applied to a resistor of 10Ome...

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  9. A sinusoidal voltage v=200 sin 314 t is applied to a resistor of 10Ome...

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  10. A circuit is set up connecting L=100 mH, C=5muF and R=100Omega is seri...

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  11. A circuit is set up connecting L=100 mH, C=5muF and R=100Omega is seri...

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  12. A circuit is set up connecting L=100 mH, C=5muF and R=100Omega is seri...

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  13. A circuit draws a power of 550 W from a 220V-50 Hz source. The power f...

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  14. Find out the inductance of an inductor which should be connected in se...

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  15. An ac source is connected in series with an inductor of 5H and a resis...

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  16. The primary coil of an ideal step-up transformer has 100 turns, and th...

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  17. The primary coil of an ideal step-up transformer has 100 turns, and th...

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  18. The primary coil of an ideal step-up transformer has 100 turns, and th...

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  19. The primary coil of an ideal step-up transformer has 100 turns, and th...

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  20. The primary coil of an ideal step-up transformer has 100 turns, and th...

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