Single Stage Transistor Amplifiers(Electrical Engineering Questions ) Questions and Answers

Question 1. 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
Explanation:-
Answer: Option D. -> RC + RE
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. In transistor amplifiers, we generally use______________ capacitors?
  1.    Electrolytic
  2.    Mica
  3.    Paper
  4.    Air
Explanation:-
Answer: Option A. -> Electrolytic
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. 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
Explanation:-
Answer: Option B. -> Collector has reverse bias
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. A transistor converts __________________?
  1.    d.c. power into a.c. power
  2.    a.c. power into d.c. power
  3.    high resistance into low resistance
  4.    none of the above
Explanation:-
Answer: Option A. -> d.c. power into a.c. power
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. For highest power gain, one would use _________________configuration?
  1.    CC
  2.    CB
  3.    CE
  4.    none of the above
Explanation:-
Answer: Option C. -> CE
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?
  1.    The same as
  2.    Less than
  3.    More than
  4.    None of the above
Explanation:-
Answer: Option B. -> Less than
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?
  1.    Transistor
  2.    Biasing circuit
  3.    Collector supply VCC
  4.    None of the above
Explanation:-
Answer: Option C. -> Collector supply VCC
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. If the input capacitor of a transistor amplifier is short-circuited, then_________________?
  1.    Transistor will be destroyed
  2.    Biasing conditions will change
  3.    Signal will not reach the base
  4.    None of the above
Explanation:-
Answer: Option B. -> Biasing conditions will change
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. 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
Explanation:-
Answer: Option C. -> More than
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. CC configuration is used for impedance matching because its ________________?
  1.    Input impedance is very high
  2.    Input impedance is low
  3.    Output impedance is very low
  4.    None of the above
Explanation:-
Answer: Option A. -> Input impedance is very high
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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