At very low frequencies a series R-C circuit behaves as almost purely Capacitive Inductive Resistive None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Skin effect occurs when a conductor carries current at _________ frequencies. Low Medium High Very low TRUE ANSWER : ? YOUR ANSWER : ?
All definitions of power factor of a series R-L-C circuit are correct except Ratio of kW and kVA Ratio of J and Z Ratio of W and VA Ratio of net reactance and impedance TRUE ANSWER : ? YOUR ANSWER : ?
The series and parallel resonance on L-C circuit' differs in that Series resistance needs a low-resistance source for sharp rise in current Parallel resonance needs a low-resistance source for a sharp increase in impedance Series resonance needs a high-resistance source for sharp increase in current Parallel resonance needs a low-resistance source for a sharp rise in line current TRUE ANSWER : ? YOUR ANSWER : ?
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 8 kVAR 10 kVAR 16 kVAR 12 kVAR TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of active power to apparent power is known as factor. Load Power Form Demand TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following circuit component opposes the change in the circuit voltage ? Inductance Resistance Capacitance Conductance TRUE ANSWER : ? YOUR ANSWER : ?
What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value? 45° 180° 90° 30° TRUE ANSWER : ? YOUR ANSWER : ?
In a series L-C circuit at the resonant frequency the Current is minimum Impedance is maximum Voltage across C is minimum Current is maximum TRUE ANSWER : ? YOUR ANSWER : ?
In a purely inductive circuit Actual power is zero Reactive power is zero Apparent power is zero None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?