Q.1
If the input capacitor of a transistor amplifier is short-circuited, then
  • Transistor will be destroyed
  • Biasing conditions will change
  • Signal will not reach the base
  • None of the above
Q.2
The purpose of a coupling capacitor in a transistor amplifier is to ___________
  • Increase the output impedance of transistor
  • Protect the transistor
  • Pass a.c. and block d.c.
  • Provide biasing
Q.3
The purpose of emitter capacitor (i.e. capacitor across RE) is to ___________
  • Avoid voltage gain drop
  • Forward bias the emitter
  • Reduce noise in the amplifier
  • None of the above
Q.4
A single stage transistor amplifier with no load sees an a.c. load of
  • RC + RE
  • RC
  • RC || RE
  • RC/RE
Q.5
The value of collector load RC in a transistor amplifier is ___________ the output impedance of the transistor.
  • The same as
  • Less than
  • More than
  • None of the above
Q.6
If a transistor amplifier draws 2mA when input voltage isV, then its input impedance is ___________
  • 20 kΩ
  • 2 kΩ
  • 10 kΩ
  • 5 kΩ
Q.7
CC configuration is used for impedance matching because its ___________
  • Input impedance is very high
  • Input impedance is low
  • Output impedance is very low
  • None of the above
Q.8
The slope of a.c. load line is ___________ that of d.c. load line
  • The same as
  • More than
  • Less than
  • None of the above
Q.9
A single stage transistor amplifier contains ___________ and associated circuitry
  • Two transistors
  • One transistor
  • Three transistor
  • None of the above
Q.10
In a CE amplifier, voltage gain = ___________ x RAC/Rin
  • α
  • (1 + α)
  • (1+ β)
  • β
Q.11
In transistor amplifiers, we generally use ___________ capacitors.
  • Electrolytic
  • Mica
  • Paper
  • Air
Q.12
It is generally desired that a transistor should have ___________ input impedance
  • Low
  • Very low
  • High
  • Very high
Q.13
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
Q.14
If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ___________
  • High
  • Very high
  • Moderate
  • Low
Q.15
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
Q.16
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
Q.17
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
Q.18
A CE amplifier is also called ___________ circuit
  • Grounded emitter
  • Grounded base
  • Grounded collector
  • None of the above
Q.19
If the power and current gains of a transistor amplifier areandrespectively, then voltage gain is
  • 165
  • 165 x 104
  • 100
  • None of the above
Q.20
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________
  • Transistor
  • Biasing circuit
  • Collector supply VCC
  • None of the above
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