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Homework Help >> Electrical Engineering
  Npn and pnp transistor  

Essay Questions:

Question 1: Explain about the N-P-N transistor?

Question 2: Describe about the P-N-P transistor?

Question 3: How the transistors work as an amplifier?

Question 4: What is S.C.R and describe about its characteristics?

Question 5: What are the various applications of S.C.R?
 
Objective questions:

Question 6: A transistor has_____________

a) One pn junction.
b) Two pn junction.
c) Three pn junction.
d) Four pn junction.

Question 7: The number of depletion layers in a transistor is___________.

a) 1
b) 2
c) 3
d) 4

Question 8: In npn transistor, p region is termed_________

a) Collector.
b) Emitter.
c) Base.
d) Collector base junction.

Question 9: The base of a transistor is ___________ Doped

a) Lightly.
b) Moderately.
c) Heavily.
d) None of the above.

Question 10: The element having biggest size in a transistor is………….

a) Collector.
b) Emitter.
c) Base.
d) Collector base junction.

Question 11: In a pnp transistor, the current carriers are……….

a) Holes.
b) Electrons.
c) Acceptors.
d) Donor ions.

Question 12: The collector of a transistor is……………… Doped

a) Heavily.
b) Lightly.
c) Moderately.
d) None of the above.

Question 13: The emitter of a transistor is……………… Doped

a) Heavily.
b) Lightly.
c) Moderately.
d) None of the above.

Question 14: A transistor is a …………………………… operated device

a) Current.
b) Voltage.
c) Both current and voltage.
d) Collector base junction.

Question 15: In an npn transistor, are the minority carriers:

a) Electrons.
b) Holes.
c) Donor ions.
d) Acceptor ions.

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Course: Electrical Engineering

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