Networks Analysis and Synthesis - Engineering

Q1:

A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is

A 500 Ω

B 50 Ω

C 20 Ω

D 5 Ω

ANS:A - 500 Ω

At parallel resonance circuit impedance = .