Amplifiers » Exercise - 134. When negative voltage feedback is applied to an amplifier, its bandwidth ........ (a) is increased (b) is decreased (c) remains the same (d) insufficient data
Amplifiers » Exercise - 145. If the voltage gain of an amplifier without feedback is 20 and with negative voltage feedback it is 12, then feedback fraction is ........ (a) 5/3 (b) 3/5 (c) 1/5 (d) 0.033
Tags: feedback, amplifiers, voltage, exercise, gain, amplifier, negative, electronics, engineering
Amplifiers » Exercise - 126. When voltage feedback (negative) is applied to an amplifier, its input impedance ....... (a) is decreased (b) is increased (c) remains the same (d) none of the above
Amplifiers » Exercise - 123. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative voltage feedback is approximately ....... (a) 500 (b) 100 (c) 1000 (d) 5000
Tags: amplifiers, feedback, voltage, exercise, amplifier, gain, negative, electronics, engineering
Amplifiers » Exercise - 133. If voltage feedback (negative) is applied to an amplifier, its output impedance ........ (a) remains the same (b) is increased (c) is decreased (d) none of the above