Alternating CurrentHard
Question
If an AC main supply is given to be 220 V. The average emf during a positive half cycle will be
Options
A.198 V
B.220 V
C.240 V
D.220√2 V
Solution
Erms = 220 V
∴ Erms
⇒ E0 = √2 Erms
Average e.m.f. over half cycle
=
E0 = 0.637 × 1.41 × 220 = 198.15V
∴ Erms
⇒ E0 = √2 ErmsAverage e.m.f. over half cycle
=
E0 = 0.637 × 1.41 × 220 = 198.15VCreate a free account to view solution
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