Question

If I =200 sin (314t ± π÷2) then find mean value of current and also find the frequency?​

Answer 1

The general equation : I = I0 sin (wt + phi)
In the given formula; I naught = 200
Mean Current = 2/pi x I naught
2/pi x 200 ~ 127.4 A

Now again equating the above equation with the general formula, w = 314 = 2x pi x frequency
2f = 314/3.14
f = 50

Please feel free to correct me!