Amplifiers » Exercise - 147. An amplifier has an open loop voltage gain of 1,00,000. With negative voltage feedback, the voltage gain is reduced to 100. What is the sacrifice factor ? (a) 1000 (b) 100 (c) 5000 (d) none of the above
Tags: amplifiers, gain, exercise, negative, feedback, sacrifice, electronics, engineering
Feedback Amplifiers » Exercise - 1 1. The advantage of using negative feedback in an amplifier is that its gain can be made practically independent of : (a) temperature changes (b) age of components (c) frequency (d) all of the above
Tags: feedback, amplifiers, exercise, negative, gain, temperature, frequency, electronics, engineering
Amplifiers » Exercise - 125. The gain of an amplifier with feedback is known as ........... gain. (a) resonant (b) open loop (c) closed loop (d) none of the above
Tags: amplifiers, gain, exercise, feedback, electronics, engineering
Amplifiers » Exercise - 140. In the expression for voltage gain with negative voltage feedback, the term 1 + Am mv is known as ........ (a) gain factor (b) feedback factor (c) sacrifice factor (d) none of the above
Tags: amplifiers, gain, feedback, exercise, negative, sacrifice, electronics, engineering
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, exercise, gain, negative, electronics, engineering