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MCQs

Total Questions : 50 | Page 2 of 5 pages
Question 11. For proper amplification by a transistor circuit, the operating point should be located at the ___________ of the d
  1.    The end point
  2.    Middle
  3.    The maximum current point
  4.    None of the above
 Discuss Question
Answer: Option B. -> Middle
Question 12. The leakage current in a silicon transistor is about ___________ the leakage current in a germanium transistor
  1.    One hundredth
  2.    One tenth
  3.    One thousandth
  4.    One millionth
 Discuss Question
Answer: Option C. -> One thousandth
Question 13. In a transistor, the base current is about ___________ of emitter current
  1.    25%
  2.    20%
  3.    35%
  4.    5%
 Discuss Question
Answer: Option D. -> 5%
Question 14. The stability factor of a collector feedback bias circuit is ___________ that of base resistor bias
  1.    The same as
  2.    More than
  3.    Less than
  4.    None of the above
 Discuss Question
Answer: Option C. -> Less than
Question 15. The value of stability factor for a base resistor bias is ___________
  1.    RB (ß+1)
  2.    (ß+1)RC
  3.    (ß+1)
  4.    1-ß
 Discuss Question
Answer: Option C. -> (ß+1)
Question 16. In a npn transistor, ___________ are the minority carriers
  1.    free electrons
  2.    holes
  3.    donor ions
  4.    acceptor ions
 Discuss Question
Answer: Option B. -> holes
Question 17. ICEO = () ICBO
  1.    ß
  2.    1 + a
  3.    1 + ß
  4.    none of the above
 Discuss Question
Answer: Option C. -> 1 + ß
Question 18. In a pnp transistor, the current carriers are ___________
  1.    acceptor ions
  2.    donor ions
  3.    free electrons
  4.    holes
 Discuss Question
Answer: Option D. -> holes
Question 19. In a transistor, signal is transferred from a ___________ circuit
  1.    high resistance to low resistance
  2.    low resistance to high resistance
  3.    high resistance to high resistance
  4.    low resistance to low resistance
 Discuss Question
Answer: Option B. -> low resistance to high resistance
Question 20. In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________
  1.    Remains the same
  2.    Is lowered
  3.    Is raised
  4.    None of the above
 Discuss Question
Answer: Option C. -> Is raised

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