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A circuit connected with a source of 230...

A circuit connected with a source of 230 V, draws a current of 2A and power consumed from it is 100 W, then power factor of the circuit is …….

A

0.02

B

1.2

C

0.22

D

2.2

Text Solution

Verified by Experts

The correct Answer is:
C
`P=I_(rms)V_(rms)cosdelta`
`therefore 100=2xx230xxcos delta`
`therefore cos delta=100/460 approx` 0.21739
`therefore cos delta approx` 0.22
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  2. Total energy of one LC circuit is xJ. Then at t=0, energy of fully cha...

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  3. A circuit connected with a source of 230 V, draws a current of 2A and ...

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  4. An alternating current of frequency f is flowing in a circuit containi...

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  8. If 2.2 kW of power having 22000 V is transmitted on a transmission lin...

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  15. At t = 0, time in L-C oscillator circuit …….

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  16. In R-C circuit when charge on the plate of the capacitor is increasing...

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  17. In an L-C oscillator circuit having a completely charged capacitor, wi...

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  18. Time taken from zero to maximum for an A.C. voltage of frequency 50Hz ...

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  19. Initially conditions of L-C oscillator circuit ……….

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