A CE amplifier is also called ___________ circuit
A. Grounded emitter
B. Grounded base
C. Grounded collector
D. None of the above
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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
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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
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In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________
A. RC + RL
B. RC || RL
C. RL
D. RC
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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
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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
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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
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If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is
A. RL + RC
B. RC || RL
C. RL - RC
D. RC
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It is generally desired that a transistor should have ___________ input impedance
A. Low
B. Very low
C. High
D. Very high
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For highest power gain, one would use ___________ configuration
A. CC
B. CB
C. CE
D. none of the above
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In transistor amplifiers, we generally use ___________ capacitors.
A. Electrolytic
B. Mica
C. Paper
D. Air
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The input capacitor in an amplifier is the ___________ capacitor
A. Coupling
B. Bypass
C. Leakage
D. None of the above
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In a CE amplifier, voltage gain = ___________ × R in R AC
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A single stage transistor amplifier contains ___________ and associated circuitry
A. Two transistors
B. One transistor
C. Three transistor
D. None of the above
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The slope of a.c. load line is ___________ that of d.c. load line
A. The same as
B. More than
C. Less than
D. None of the above
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CC configuration is used for impedance matching because its ___________
A. Input impedance is very high
B. Input impedance is low
C. Output impedance is very low
D. None of the above
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If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ___________
A. 20 kΩ
B. 2 kΩ
C. 10 kΩ
D. 5 kΩ
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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
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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
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A single stage transistor amplifier with no load sees an a.c. load of
A. RC + RE
B. RC
C. RC || RE
D. R E R C
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