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The power factor of L-C-R circuit at res...

The power factor of L-C-R circuit at resonance is

A

0

B

`(1)/(2)`

C

`(1)/(sqrt(2))`

D

1

Text Solution

Verified by Experts

The correct Answer is:
D
The power factor of L-C-R circuit at resonance is 1.
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Knowledge Check

  • In an L-C-R circuit

    A
    the impedance is equal to reactance
    B
    the ratio between effective voltage to effective current is called reactance
    C
    at resonance the resistance is equal to the reactance
    D
    at resonance the net reactance is zero

  • In a series L.C.R circuit resonant current is I. the power dissipated in the circuit at resonance is

    A
    `(I_(r)^(2)R)/((omegaL - 1/(omegaC))`
    B
    zero
    C
    `1/2 I_(r)^(2)R`
    D
    `I_(r)^(2)R`

  • In an L-C-R series circuit, at resonance

    A
    a)the current and voltage are in phase
    B
    b)the impedance is maximum
    C
    c)the current is minimum
    D
    d)the quality factor is independent of R

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