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.Management Sciences
Category: Single Stage Transistor Amplifiers
When a transistor amplifier is operating, the current in any branch is _______________?
A. Sum of a.c. and d.c.
B. c. only
C. c. only
D. difference of a.c. and d.c.
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
If the collector supply is 10V, then collector cut off voltage under d.c. conditions is _______________?
A. 20 V
B. 5 V
C. 2 V
D. 10 V
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
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
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
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
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
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
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