Electrical Engineering ⇒ Topic : Key Points About Parallel Resonance

Key Points About Parallel Resonance

(1)The key points concerning parallel resonant circuits are

(2)The circuit power factor is unity (i.e. 1) so that parallel resonant circuit behaves as a resistance.Since parallel resonant circuit is resistive, it means that

• Circuit admittance = Circuit conductance
• Circuit susceptance is zero.

(3) The circuit impedance of a parallel resonant circuit is maximum.

(4) At parallel resonance, the circuit current is minimum and is given by

(5) The resonant frequency f_r) of a parallel resonant circuit can be found by equating susceptance of the circuit at f_r to zero