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In a class B amplifier, it is found that DC power is 25W, find the ac power.(a) 10 W(b) 62.5 W(c) 25 W(d) 50 WThe question was asked during an online interview.This interesting question is from Push-Pull Class B Amplifier in division Power Amplifier of Analog Circuits

Answer»

Right choice is (b) 62.5 W

Explanation: For a CLASS B AMPLIFIER, FIGURE of merit = 0.4 = dc POWER/ac power

Thus AC power = DC power/0.4 = 25/0.4 = 62.5 W.



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