Power delivered by the ac source of the circu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) In an $ac$ circuit,the power delivered by the source is given by $P = V_{rms} I_{rms} \cos \phi$,where $\cos \phi$ is the power factor.For the pow

Vedclass · Accepted Answer

$\omega L = \frac{1}{\omega C}$

Vedclass · Answer

(B) In an $ac$ circuit,the power delivered by the source is given by $P = V_{rms} I_{rms} \cos \phi$,where $\cos \phi$ is the power factor.For the power to be maximum,the power factor $\cos \phi$ must be maximum,which occurs when $\cos \phi = 1$.This happens when the phase angle $\phi = 0$,which is the condition of resonance in an $LCR$ circuit.At resonance,the inductive reactance $X_L$ is equal to the capacitive reactance $X_C$.Therefore,$X_L = X_C \implies \omega L = \frac{1}{\omega C}$.

Power delivered by the $ac$ source of the circuit becomes maximum when

Similar Questions

What type of life cycle in plants is indicated by the given figure?

If for some reason our goblet cells are non-functional,this will adversely affect:

$A$ fresh radioactive sample is given at $t = 0$. Its decay fraction is $\frac{1}{5}$ at $t_1$ instant and $\frac{4}{5}$ at $t_2$ instant. Its mean life is

If the harmonic mean of the roots of the equation $\sqrt{2}x^2 - bx + (8 - 2\sqrt{5}) = 0$ is $4$,then the value of $b$ is:

In which of the following reactions is $H_2O_2$ acting as a reducing agent?

Vedclass Test Series

Exam Paper Generator

Online Exam Module