Electronic Devices and Circuits

Q1: The O/P Power of a power amplifier is several times its input power. It is possible because

A power amplifier introduces a -ve resistance

B there is +ve feed back in the circuit

C step up transformer is use in the circuit

D power amplifier converts a part of I/P d.c. power into a.c. power

ANS:D - power amplifier converts a part of I/P d.c. power into a.c. power

No answer description is available.



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