Lakshya Education MCQs

Question: The forbidden energy gap between the valence band and conduction band will be least in case of
D.All of the above
Answer: Option A

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Question 1. For a NPN bipolar transistor, what is the main stream of current in the base region?
  1.    Drift of holes
  2.    Diffusion of holes
  3.    Drift of electrons
  4.    Diffusion of electrons
Answer: Option B
Question 2. Assertion (A): A JFET can be used as a current source.Reason (R): In beyond pinch off region the current in JFET is nearly constant.
  1.    Both A and R are true and R is correct explanation of A
  2.    Both A and R are true but R is not a correct explanation of A
  3.    A is true but R is false
  4.    A is false but R is true
Answer: Option A
Question 3. For a P-N diode, the number of minority carriers crossing the junction depends on
  1.    Forward bias voltage
  2.    Potential barrier
  3.    Rate of thermal generation of electron hole pairs
  4.    None of the above
Answer: Option C

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