Exercise: Fet Amplifiers

Questions for: Fet Amplifiers

If ID = IDSS / 2, gm = ________ gmo.
A:
1
B:
0.707
C:
0.5
D:
Answer: B
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Refer to this figure. If ID = 4 mA, IDSS = 16 mA, and VGS(off) = –8 V, find VDS.

A:
19.2 V
B:
–6 V
C:
10.8 V
D:
30 V
Answer: C
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Refer to this figure. The voltage gain is

A:
1.2.
B:
2.4.
C:
4.4.
D:
8.8.
Answer: D
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In a common-source amplifier, the purpose of the bypass capacitor, C2, is to
A:
keep the source effectively at ac ground.
B:
provide a dc path to ground.
C:
provide coupling to the input.
D:
provide coupling to the load.
Answer: A
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Referring to this figure, calculate Zo if yos = 40 S.

A:
2.92 k
B:
3.20 k
C:
3.25 k
D:
3.75 k
Answer: A
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