Lakshya Education MCQs

Question: In a common emitter, unbypassed resister provides
Options:
A. voltage shunt feedback
B. current series feedback
C. negative voltage feedback
D. positive current feedback
Answer: Option C

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More Questions on This Topic :

Question 1. An n- channel jfet has idss=2ma,and vp=-4v.its transconductance gm=in ma/v)for an applied gate to source voltage vgs=-2v is
  1.     0.25
  2.     0.5
  3.     0.75
  4.     1
Answer: Option B
Question 2. The current gain of a bjt is
  1.     gm r0
  2.     gm / r0
  3.     gm rπ
  4.     gm /rπ
Answer: Option C
Question 3. An amplifier without feedback has a voltage gain of 50,input resistance os 1 kΩ & output resistance of 2.5kΩ.the input resistance of the current shunt negative feedback amplifier using the above amplifier with a feedbacik factor of 0.2 is
  1.     1/11KΩ
  2.     1/5KΩ
  3.     5KΩ
  4.     11KΩ
Answer: Option A
Question 4. The most commonly used amplifier in sample & hold circuits is
  1.     A unity gain non-inverting amplifier
  2.     A unity gain inverting amplifier
  3.     An inverting amplifier with a gain of 10
  4.     An inverting amplifiers with a gain of 100
Answer: Option B
Question 5. An n- channel jfet has idss=2ma,and vp=-4v.its transconductance gm=in ma/v)for an applied gate to source voltage vgs=-2v is
  1.     0.25
  2.     0.5
  3.     0.75
  4.     1
Answer: Option B
Question 6. An n- channel jfet has idss=2ma,and vp=-4v.its transconductance gm=in ma/v)for an applied gate to source voltage vgs=-2v is
  1.     0.25
  2.     0.5
  3.     0.75
  4.     1
Answer: Option B

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