Negative feedback reduces noise originating at the amplifier input. True False I

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Question
Negative feedback reduces noise originating at the amplifier input.
Options
A. True
B. False

Correct Answer

False

Explanation

It has no effect on noise originating at amplifier input.

Analog Electronics problems

Search Results

1. In figure v₁ = 8 V and v₂ = 8 V. Which diode will conduct?
Options
A. D₁ only
B. D₂ only
C. Both D₁ and D₂
D. Neither D₁ nor D₂

2. A half wave diode circuit using ideal diode has an input voltage 20 sin ?t volts. Then average and rms values of output voltage are
Options
A. and 10 V
B. and 10 V
C. and 5 V
D. and 5 V

3. Which power amplifier can deliver maximum load power?
Options
A. Class A
B. Class AB
C. Class B
D. Class C

4. In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is
Options
A. 1
B. 0.5
C. 0
D. 0.8

6. Which of the following oscillators is suitable for frequencies in the range of mega hertz?
Options
A. RC phase shift
B. Wien bridge
C. Hartley
D. Both (a) and (c)

9. In class C operation of an amplifier circuit, the collector current exists for
Options
A. 360� of input wave
B. 180� of input wave
C. more than 180� of input wave
D. less than 180� of input wave

10. Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically
Reason (R): The output characteristics of a transistor is nonlinear.
Options
A. Both A and R are correct and R is correct explanation for A
B. Both A and R are correct but R is not correct explanation for A
C. A is correct R is wrong
D. A is wrong R is correct

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