engineering recuitment BHEL Engineer Trainee Mock Test 2025 Analog Electronics Oscillators and Feedback Amplifier Feedback Amplifier
Which of the following statement(s) is/are true?
a) An amplifier must be powered and have an input energy to develop an normal output signal.
b) An amplifier has an voltage gain of 50. If the input signal is 2 mV, the output signal should be 50 mV.
c)The input signal to an amplifier is 100 μV, and its output signal is 50 mV, so its voltage gain is 500.
1
b) and c)
2
a only
3
a) and c)
4
a) and b)