1 Crore+ students have signed up on EduRev. Have you? Download the App 
For the idealized full wave rectifier system the average and rms value of the voltage is
The instantaneous power delivered to the 5 Ω resistor at t = 0 in the given circuit is
For a sinusoidal waveform, the ratio of average to rms value is
An impedance of (3 + j 4) Ω is connected in parallel with a resistance of 10 Ω. The ratio of power loss in these parallel circuits is
A 0.2 HP induction motor runs at an efficiency of 85%. If the operating power factor is 0.8 lag, the reactive power taken by the motor is
In an a.c. circuit, v = 100 sin (ωt + 30°) V, i = 5 sin(ωt 30°) A. The apparant and reactive power in the circuit are respectively
The inductive reactance in series with Z in the circuit shown below has a value of 25 Ω If the voltage drop a cross Z is 179 volts, the power dissipated in the circuit is 320 W.
The reactive part of Z is
The values of current I_{1} and I_{2} in the circuit shown below are given by:
1A = (0.8 + j0.2) A and I_{2} = (1  j0.5) A
The total power lost in the 5 Ω resistor is
23 docs263 tests

Test: AC Power Analysis 2 Test  10 ques 
Test: Second Order RLC Circuits  1 Test  10 ques 
Test: Second Order RLC Circuits 2 Test  15 ques 
Test: Balanced Three Phase Circuits Test  10 ques 
Test: Unbalanced Three Phase Circuits Test  10 ques 
23 docs263 tests

Test: AC Power Analysis 2 Test  10 ques 
Test: Second Order RLC Circuits  1 Test  10 ques 
Test: Second Order RLC Circuits 2 Test  15 ques 
Test: Balanced Three Phase Circuits Test  10 ques 
Test: Unbalanced Three Phase Circuits Test  10 ques 