Exercise: Fet Amplifiers

Questions for: Fet Amplifiers

What is the input resistance (Rin(source)) of a common-gate amplifier?
A:
Rs
B:
C:
1 / gm
D:
none of the above
Answer: C
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An FET is a ________-controlled device.
A:
current
B:
voltage
C:
D:
Answer: B
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What is (are) the function(s) of the coupling capacitors C1 and C2 in an FET circuit?
A:
to create an open circuit for dc analysis
B:
to isolate the dc biasing arrangement from the applied signal and load
C:
to create a short-circuit equivalent for ac analysis
D:
All of the above
Answer: D
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The class D amplifier uses what type of transistors?
A:
JFETs
B:
BJTs
C:
MOSFETs
D:
any of the above
Answer: C
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Where do you get the level of gm and rd for an FET transistor?
A:
from the dc biasing arrangement
B:
from the specification sheet
C:
from the characteristics
D:
All of the above
Answer: D
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