power factor in rlc ckt

[devnarayan]

sir,
in a series rlc ckt how i can improve power factor .

 

[chuckey]

AT resonance, the circuit looks just like r, i.e. it will have a p.f. of 1.0
Frank

 

[devnarayan]

but one book suggest add capacitor parallel to the circuit for improve power factor of series lcr may you explain the reason

 

[FvM]

Yes, if the RLC circuit has an inductive impedance. You can calculate yourself. It's simple AC network calculation.