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  • For an LCR circuit, the power transferred from the driving source to the driven oscillator is P = I^2Z cos phi A. Here, the power factor cos\theta \geq 0, P \geq 0.

 For an LCR circuit, the power transferred from the driving source to the driven oscillator is P = I^{}2Z \cos\phi

A. Here, the power factor cos\phi \geq 0, P \geq 0.
B. The driving force can give no energy to the oscillator (P = 0) in some cases.
C. The driving force cannot syphon out (P < 0) the energy out of oscillator.
D. The driving force can take away energy out of the oscillator.

 

Answers (1)

The answers are the options (a, b, c)

According to the question

P = I^{}2Z \cos\phi

Power factor

\cos \phi =\frac{R}{Z}\: \: As\: R>0\:and\:Z>0

Thus\:\cos \phi =\frac{R}{Z}\: \: Is \:positive\\and \:where\: \phi =\frac{\pi}{2},P=0

Posted by

infoexpert21

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