1 Crore+ students have signed up on EduRev. Have you? Download the App 
Find the total voltage applied in a series RLC circuit when i=3mA, VL=30V, VC=18V and R=1000 ohms.
The power factor of an RL circuit 1/root2. If the frequency of a.c. is doubled, what will be the power factor?
When an emf E = 7cos wt is applied across a circuit, the current is I = 5coswt. What is the power factor for the circuit?
If the instantaneous current in a circuit is given by i = 2 cos (ωt  φ) A, the rms value of the current is
Find the true power given apparent power = 10 W and power factor = 0.5
In a circuit, the reactance X and resistance R are equal. What is the power factor?
158 videos453 docs185 tests

NCERT Solutions: Alternating Current Doc  20 pages 
Test: Alternating Current  1 Test  30 ques 
Transformers Video  18:09 min 
Transformers Doc  4 pages 
RMS Voltage Video  13:33 min 
158 videos453 docs185 tests

NCERT Solutions: Alternating Current Doc  20 pages 
Test: Alternating Current  1 Test  30 ques 
Transformers Video  18:09 min 
Transformers Doc  4 pages 
RMS Voltage Video  13:33 min 