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After what time will the direction of cu...

After what time will the direction of current is an electric supply line of frequency 50 Hz be reversed?

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CHHAYA PUBLICATION-ALTERNATING CURRENT -EXERCISE (Very Short Answer Type)
  1. If an alternating current is represented by I=sin100pit mA. What is th...

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  2. If an alternating current is represented by . I=sin100pitmA,then what ...

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  3. After what time will the direction of current is an electric supply li...

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  4. An alternating source of emf E=E0sinomegat and of negligible resistanc...

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  5. What changes are observed in the rms value of an ac with changes in th...

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  6. What is the rms value of an alternating current , I=I0sinomegat?

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  7. What is the ratio between the peak value and the average value of a si...

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  8. The instantaneous current in an ac circuit is I=6sin314tA. What is the...

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  9. An alternating current is I=cos 100 pitA. Find out its frequency, peak...

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  10. Why a dc voltmeter and dc ammeter cannot read ac?

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  11. What will be the phase difference between current and emf when 220 V, ...

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  12. What is the unit of impedance?

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  13. What is the reactance of pure resistances in an ac circuit?

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

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

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

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

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

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

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

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