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MCQs

Total Questions : 35 | Page 1 of 4 pages
Question 1. A CE amplifier is also called ___________ circuit
  1.    Grounded emitter
  2.    Grounded base
  3.    Grounded collector
  4.    None of the above
 Discuss Question
Answer: Option A. -> Grounded emitter
Question 2. A transistor amplifier has high output impedance because ___________
  1.    Emitter is heavily doped
  2.    Collector has reverse bias
  3.    Collector is wider than emitter or base
  4.    None of the above
 Discuss Question
Answer: Option B. -> Collector has reverse bias
Question 3. A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ___________
  1.    RC
  2.    RC || RE
  3.    RC - RE
  4.    RC + RE
 Discuss Question
Answer: Option D. -> RC + RE
Question 4. An amplifier has a power gain of 100. Its db gain is ___________
  1.    10 db
  2.    20 db
  3.    40 db
  4.    None of the above
 Discuss Question
Answer: Option B. -> 20 db
Question 5. In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________
  1.    RC + RL
  2.    RC || RL
  3.    RL
  4.    RC
 Discuss Question
Answer: Option D. -> RC
Question 6. The d.c. load of a transistor amplifier is generally ___________ that of a a.c. load
  1.    The same as
  2.    Less than
  3.    More than
  4.    None of the above
 Discuss Question
Answer: Option C. -> More than
Question 7. If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ___________
  1.    High
  2.    Very high
  3.    Moderate
  4.    Low
 Discuss Question
Answer: Option D. -> Low
Question 8. If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is
  1.    RL + RC
  2.    RC || RL
  3.    RL - RC
  4.    RC
 Discuss Question
Answer: Option B. -> RC || RL
Question 9. For highest power gain, one would use ___________ configuration
  1.    CC
  2.    CB
  3.    CE
  4.    none of the above
 Discuss Question
Answer: Option C. -> CE
Question 10. It is generally desired that a transistor should have ___________ input impedance
  1.    Low
  2.    Very low
  3.    High
  4.    Very high
 Discuss Question
Answer: Option C. -> High

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