Question

1. An alternating current is given by I = 50 sin 100 nt.
Find the frequency of current, mean current during a
positive half-cycle, virtual current and the current at
t= (1/300) s.

Answer 1

Explanation:

Solution

Here, I=50sin100πt. Compare with the stantard form : I=I0sin2πvt

(i) Mean value of a.c. over pos. half cycle

=2I0π=2×503.14=31.8A

(iii) rms value of current,

Iv=I02–√=501.414=35.35A

(iv) I=I0sinωt

=50sin100π×1300=503–√2=43.3A

Answer 2

Answer:

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