Single Stage Transistor Amplifiers(Engineering > Electrical Engineering ) Questions and Answers
Question 1. A CE amplifier is also called ___________ circuit
Grounded emitter
Grounded base
Grounded collector
None of the above
Explanation:-
Answer: Option A. -> Grounded emitter
Question 2. A transistor amplifier has high output impedance because ___________
Emitter is heavily doped
Collector has reverse bias
Collector is wider than emitter or base
None of the above
Explanation:-
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 ___________
RC
RC || RE
RC - RE
RC + RE
Explanation:-
Answer: Option D. -> RC + RE
Question 4. An amplifier has a power gain of 100. Its db gain is ___________
10 db
20 db
40 db
None of the above
Explanation:-
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 ___________
RC + RL
RC || RL
RL
RC
Explanation:-
Answer: Option D. -> RC
Question 6. The d.c. load of a transistor amplifier is generally ___________ that of a a.c. load
The same as
Less than
More than
None of the above
Explanation:-
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 ___________
High
Very high
Moderate
Low
Explanation:-
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
RL + RC
RC || RL
RL - RC
RC
Explanation:-
Answer: Option B. -> RC || RL
Question 9. For highest power gain, one would use ___________ configuration
CC
CB
CE
none of the above
Explanation:-
Answer: Option C. -> CE
Question 10. It is generally desired that a transistor should have ___________ input impedance