Electro Magnetic Induction And Alternating Currents Question 106

Question: If an ac main supply is given to be 220 V. What would be the average e.m.f. during a positive half cycle [MH CET 2002]

Options:

A) 198V

B) 386V

C) 256V

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

Vav=2πV0=2π×(Vrms×2)=22π.Vrms =22π×220=198 V



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