Virtual value or effective value of a.c. is
Answer :- d
Solution :- as we know that H= (I02 R)/2 * T/2 -----------------------(1)
If I(rms) be the rms value of ac then
H = I2(rms)R T/2 ---------------------(2)
From eq (1)&(2)
I2(rms)R T/2 = (I02R)/2 * T/2
I2(rms) = (I02)/2
= I(rms)= (I0)/(2)½
= I(rms) = 0.707 I0
Given the instantaneous value of current from a.c. source is I = 8 sin 623t. Find the r.m.s value of current
What is time constant
Find the instantaneous voltage for an a.c. supply of 200V and 75 hertz
Answer :- b
Solution :- f = 75hz
= 2 * π * 75
E(max) = (2)^½ E(rms)
E(max) = 1.414 * 200
E(ins) = E(max)sinwt
E(ins) = 282.8 sin 150πt
If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.
Alternating current is represented by
Alternating current is an electric current which periodically reverses direction, as opposed to direct current which flows only in one direction. And it can be easily represented by the periodic function.
So, I = Io sin wt or I = lo cos wt.
What is the relationship between Em and E0
The only component that dissipates energy in ac circuit is:
Which is more dangerous?
The average power dissipation in pure resistive circuit is: