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Single Stage Transistor Amplifier Quiz | Single Stage Transistor Amplifier Objective Type Questions and Answers

Questions
21 For highest power gain, one would use …………….. configuration
A CC
B CB
C CE
D none of the above

Answer: CE
22 A transistor amplifier has high output impedance because ………..
A Emitter is heavily doped
B Collector has reverse bias
C Collector is wider than emitter or base
D None of the above

Answer: Collector has reverse bias
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23 A transistor converts ……………
A d.c. power into a.c. power
B a.c. power into d.c. power
C high resistance into low resistance
D none of the above

Answer: d.c. power into a.c. power
24 The output power of a transistor amplifier is more than the input power because the additional power is supplied by …………
A Transistor
B Biasing circuit
C Collector supply VCC
D None of the above

Answer: Collector supply VCC
25 A single stage transistor amplifier with no load sees an a.c. load of ……..
A RC + RE
B RC
C RC || RE
D RC/RE

Answer: RC
26 In transistor amplifiers, we generally use ………….. capacitors.
A Electrolytic
B Mica
C Paper
D Air

Answer: Electrolytic
27 A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ……….
A RC
B RC || RE
C RC – RE
D RC + RE

Answer: RC + RE
28 The value of collector load RC in a transistor amplifier is ………… the output impedance of the transistor.
A The same as
B Less than
C More than
D None of the above

Answer: Less than
29 The d.c. load of a transistor amplifier is generally ………….. that of a a.c. load
A The same as
B Less than
C More than
D None of the above

Answer: More than
30 A CE amplifier is also called ………….. circuit
A Grounded emitter
B Grounded base
C Grounded collector
D None of the above

Answer: Grounded emitter
31 The radio wave picked up by the receiving antenna is amplified about …….. times to have reasonable sound output
A 1000
B A million
C 100
D 10000

Answer: A million
32 If the input capacitor of a transistor amplifier is short-circuited, then………
A Transistor will be destroyed
B Biasing conditions will change
C Signal will not reach the base
D None of the above

Answer: Biasing conditions will change
33 If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ………….
A High
B Very high
C Moderate
D Low

Answer: Low
34 The ratio of output impedance of a CE amplifier is ……………
A About 1
B Low
C High
D Moderate

Answer: Moderate
35 The purpose of emitter capacitor (i.e. capacitor across RE) is to ……….
A Avoid voltage gain drop
B Forward bias the emitter
C Reduce noise in the amplifier
D None of the above

Answer: Avoid voltage gain drop
36 The purpose of a coupling capacitor in a transistor amplifier is to ……….
A Increase the output impedance of transistor
B Protect the transistor
C Pass a.c. and block d.c.
D Provide biasing

Answer: Pass a.c. and block d.c.
37 In order to get more voltage gain from a transistor amplifier, the transistor used should have …………..
A Thin base
B Thin collector
C Wide emitter
D None of the above

Answer: Thin base
38 An amplifier has a power gain of 100. Its db gain is ……………
A 10 db
B 20 db
C 40 db
D None of the above

Answer: 20 db
39 The purpose of d.c. conditions in a transistor is to …………..
A Reverse bias the emitter
B Forward bias the collector
C Set up operating point
D None of the above

Answer: Set up operating point

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