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MCQs

Total Questions : 50 | Page 3 of 5 pages
Question 21. If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling
  1.    Loose
  2.    Tight
  3.    Critical
  4.    None of the above
 Discuss Question
Answer: Option A. -> Loose
Question 22. A resonant circuit contains ___________ elements
  1.    R and L only
  2.    R and C only
  3.    Only R
  4.    L and C
 Discuss Question
Answer: Option D. -> L and C
Question 23. IC = ß IB + ___________
  1.    ICBO
  2.    IC
  3.    aIE
  4.    ICEO
 Discuss Question
Answer: Option D. -> ICEO
Question 24. For faithful amplification by a transistor circuit, the value of VBE should ___________ for a silicon transistor
  1.    Be zero
  2.    Be 0.01 V
  3.    Not fall below 0.7 V
  4.    Be between 0 V and 0.1 V
 Discuss Question
Answer: Option C. -> Not fall below 0.7 V
Question 25. At series resonance, the circuit offers ___________ impedance
  1.    Zero
  2.    Maximum
  3.    Minimum
  4.    None of the above
 Discuss Question
Answer: Option C. -> Minimum
Question 26. Transistor biasing represents ___________ conditions
  1.    a.c.
  2.    d.c.
  3.    both a.c. and d.c.
  4.    none of the above
 Discuss Question
Answer: Option B. -> d.c.
Question 27. The relation between ß and a is ___________
  1.    ß = a / (1 – a )
  2.    ß = (1 – a ) / a
  3.    ß = 1 / (1 – a )
  4.    ß = a / (1 + a )
 Discuss Question
Answer: Option A. -> ß = a / (1 – a )
Question 28. The most commonly used transistor arrangement is ___________ arrangement
  1.    common emitter
  2.    common base
  3.    common collector
  4.    none of the above
 Discuss Question
Answer: Option A. -> common emitter
Question 29. In a transistor ___________
  1.    IC = IE + IB
  2.    IB = IC + IE
  3.    IE = IC - IB
  4.    IE = IC + IB
 Discuss Question
Answer: Option D. -> IE = IC + IB
Question 30. Transistor biasing is done to keep ___________ in the circuit
  1.    Proper direct current
  2.    Proper alternating current
  3.    The base current small
  4.    Collector current small
 Discuss Question
Answer: Option A. -> Proper direct current

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