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This is an MCQ-based quiz on Amplifiers.
This includes Resonant, Open-loop, Closed-loop, Oscillators, Rectifiers, and Amplifiers
A feedback circuit usually employs ___________ network
The gain of an amplifier with feedback is known as ___________ gain
An emitter follower has ___________ input impedance
Two non-inverting amplifiers, with gain =1 and gain=20 are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain=20 has ___________
When negative voltage feedback is applied to an amplifier, its voltage gain ……………….
The value of negative feedback fraction is always …………….
If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is ………..
The gain of an amplifier without feedback is 100 db. If a negative feedback of 3 db is applied, the gain of the amplifier will become …………..
Emitter follower is a ___________ circuit
Voltage feedback
Current feedback
Both voltage and current feedback
None of the above
What would be the value of feedback voltage in a negative feedback amplifier with A=100; β =0.03 and input signal voltage = 40mv?
0.03
0.06
0.09
0.12
