Lakshya Education MCQs

Question: When current feedback (negative) is applied to an amplifier, its input impedance ___________
Options:
A. Is decreased
B. Is increased
C. Remains the same
D. None of the above
Answer: Option A

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More Questions on This Topic :

Question 1. Negative feedback is employed in ___________
  1.     Oscillators
  2.     Rectifiers
  3.     Amplifiers
  4.     None of the above
Answer: Option C
Question 2. Emitter follower is used for ___________
  1.     Current gain
  2.     Impedance matching
  3.     Voltage gain
  4.     None of the above
Answer: Option B
Question 3. The value of negative feedback fraction is always ___________
  1.     Less than 1
  2.     More than 1
  3.     Equal to 1
  4.     None of the above
Answer: Option A
Question 4. When voltage feedback (negative) is applied to an amplifier, its input impedance ___________
  1.     Is decreased
  2.     Is increased
  3.     Remains the same
  4.     None of the above
Answer: Option B
Question 5. If voltage feedback (negative) is applied to an amplifier, its output impedance ___________
  1.     Remains the same
  2.     Is increased
  3.     Is decreased
  4.     None of the above
Answer: Option C
Question 6. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately___________
  1.     500
  2.     100
  3.     1000
  4.     5000
Answer: Option B

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