Amplifiers With Negative Feedback MCQ

Amplifiers With Negative Feedback MCQ

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  • 17th Apr, 2021

Amplifiers With Negative Feedback MCQ Questions

Take Amplifiers With Negative Feedback MCQ Test & Online Quiz to test your Knowledge

Below is the Amplifiers With Negative Feedback MCQ test that checks your basic knowledge of Amplifiers With Negative Feedback. This Amplifiers With Negative Feedback MCQ Test contains 20 Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also take the Online Quiz from the Take Amplifiers With Negative Feedback Quiz Button.

Amplifiers With Negative Feedback MCQ Test

1) A feedback circuit usually employs ____ network.

  • A. Resistive
  • B.Capacitive
  • C.Inductive
  • D.None of the above

2) The gain of an amplifier with feedback is known as ____ gain.

  • A. Resonant
  • B.Open loop
  • C.Closed loop
  • D.None of the above

3) An emitter follower has high input impedance.

  • A. True
  • B.False

4) When a negative voltage feedback is applied to an amplifier, its bandwidth _______.

  • A. is increased
  • B.is decreased
  • C.remains the same
  • D.insufficient data

5) The voltage gain of an emitter follower is ____.

  • A. Much less than 1
  • B.Approximately equal to 1
  • C.Greater than 1
  • D.None of the above

6) Negative feedback is employed in ____.

  • A. Oscillators
  • B.Rectifiers
  • C.Amplifiers
  • D.None of the above

7) When negative voltage feedback is applied to an amplifier, its voltage gain ___.

  • A. is increased
  • B.is reduced
  • C.remains the same
  • D.None of the above

8) What do you know about Emitter follower?

  • A. Emitter follower is a Current feedback circuit.
  • B.Emitter follower is a Voltage feedback circuit.
  • C.Resistor
  • D.None of the above

9) A Negative-feedback amplifier is an ____ amplifier.

  • A. Magnetic
  • B.Electronic
  • C.Electromagnetic
  • D.None of the above

10) Emitter follower is used for ____.

  • A. Current gain
  • B.Impedance matching
  • C.Voltage gain
  • D.None of the above

11) The value of negative feedback fraction is always ____.

  • A. less than 1
  • B.more than 1
  • C.equal to 1
  • D.None of the above

12) Where is the Permanent Magnetic speakers use?

  • A. in Radio signal Tower
  • B.in Radio
  • C.in Transformer
  • D.All of the above

13) What are the consequences over the non-linear distortion by the inception of negative feedback?

  • A. Level of non-linear distortion goes on increasing
  • B.Level of non-linear distortion goes on decreasing
  • C.Level of non-linear distortion undergoes stability
  • D.None of the above

14) Stability of a transfer gain is generally defined as the reciprocal of ____.

  • A. Desensitivity
  • B.Sensitivity
  • C.Conductivity
  • D.Resistivity

15) Which among the following is an output provided by transresistance amplifier?

  • A. Output voltage proportional to signal current
  • B.Output voltage proportional to input voltage
  • C.Output current proportional to signal current
  • D.Output current proportional to signal voltage

16) What should be the value of input resistance for an ideal voltage amplifier circuit?

  • A. Zero
  • B.Unity
  • C.Infinity
  • D.Unpredictable

17) An ideal OP-Amp Is an ideal ____.

  • A. Current controlled current source
  • B.Current controlled voltage source
  • C.Voltage controlled voltage source
  • D.Voltage controlled Current source

18) What would be the value of feedback voltage in a negative feedback amplifier with A=100; β =0.03 and input signal voltage = 40mv?

  • A. 0.03V
  • B.0.06V
  • C.0.09V
  • D.0.12V

19) If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately _____.

  • A. 500
  • B.100
  • C.600
  • D.1000

20) The main advantages of using Negative Feedback in amplifier circuits is to greatly improve their stability, better tolerance to component variations, stabilization against DC drift as well as increasing the amplifiers bandwidth.

  • A. True
  • B.False

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