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Average and Instaneous Power

The average p...

Question

The average power/cycle associated with inductor is

A

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B

ZERO

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C

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D

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Solution

The correct option is B
ZERO

The average power/cycle associated with inductor is zero.

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Q. A circuit containing a 80 mH inductor and a 60 μF capacitor in seriesis connected to a 230 V, 50 Hz supply. The resistance of the circuit is negligible. (a) Obtain the current amplitude and rms values. (b) Obtain the rms values of potential drops across each element. (c) What is the average power transferred to the inductor? (d) What is the average power transferred to the capacitor? (e) What is the total average power absorbed by the circuit? [‘Average’ implies ‘averaged over one cycle’.]

Q. (i) When an AC source is connected to an ideal inductor, show that the average power supplied by the source over a complete cycle is zero.

(ii) A lamp is connected in series with an inductor and an AC source. What happens to the brightness of the lamp when the key is plugged in and an iron rod is inserted inside the inductor ? Explain.

The average power dissipated in a pure inductor is

What is the average power/cycle in a capacitor?

What is the average power consumed/cycle in ideal capacitor.

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Average and Instaneous Power

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