Exercise: Bjt Amplifiers

Questions for: Bjt Amplifiers

Refer to this figure. You notice while servicing this amplifier that the output signal at Vout is reduced from normal. The problem could be caused by

A:
an open C3.
B:
an open C2.
C:
an open base-emitter of Q2.
D:
a shorted C2.
Answer: B
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The ________ configuration is frequently used for impedance matching.
A:
fixed-bias
B:
voltage-divider bias
C:
emitter-follower
D:
collector feedback
Answer: C
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Under which of the following condition(s) is the current gain ?
A:
ro 10RC
B:
RB 10re
C:
ro 10RC and RB 10re
D:
None of the above
Answer: C
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The ________ model suffers from being limited to a particular set of operating conditions if it is to be considered accurate.
A:
hybrid equivalent
B:
re
C:
D:
Thevenin
Answer: A
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The differential amplifier produces outputs that are
A:
common mode.
B:
in-phase with the input voltages.
C:
the sum of the two input voltages.
D:
the difference of the two input voltages.
Answer: D
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