Exercise: Bjt Amplifiers

Questions for: Bjt Amplifiers

The output voltage and the input voltage are ________ for the common-emitter configuration.
A:
in phase
B:
45º out of phase
C:
90º out of phase
D:
180º out of phase
Answer: D
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For a common-base configuration, the input impedance is relatively ________ and the output impedance quite ________.
A:
high, small
B:
small, high
C:
small, small
D:
high, high
Answer: B
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The common-emitter configuration has a ________ level of input impedance with a ________ voltage and current gain.
A:
moderate, high
B:
low, moderate
C:
low, low
D:
high, low
Answer: A
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The loaded voltage gain of an amplifier is ________ the no-load level.
A:
always more than
B:
always less than
C:
always the same as
D:
None of the above
Answer: B
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The bypass capacitor in a common-emitter configuration ________ the voltage gain.
A:
significantly decreases
B:
significantly increases
C:
slightly increases
D:
slightly decreases
Answer: B
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