1.

For a series L-C-R a.c.circuit at resonance, the statement which is not true ?

Answer»

Wattless current is zero
Power factor is zero
Peak ENERGY stored by a capacitor = peak energy stored by an inductor
Average power = apparent power

Solution :For a SERIES L-C-R, A.C. circuit at resistance, `omegaL=omegaC` So Z = R. So RESULTANT power factor
cos `delta=R/"|Z|"`
`THEREFORE cos delta=R/R=1`
`therefore delta=0^@`
Thus, power factor is 1 and in the circuit only resistance is effective So loss of power is maximum.


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