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(a) Explain the term ‘sharpness of resonance’ in ac circuit.

(b) In a series LCR circuit, V_{L}=V_{C}\neq V_{R}. What is the value of power factor for this circuit ?

 

 
 
 
 
 

Answers (1)

a) The sharpness of resonance is the sharpness of the peak of the resonance curve. The sharper the curve the narrower is the resonance or the resonance lasts over a very small range of frequencies. 

b) Power factor

cos\phi=\frac{R}{Z}

Here Z=R since

 V_L=V_C

Therefore power factor=1

 

Posted by

Safeer PP

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