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Electronics
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Transistors and Applications
Comments
Question
A(n) ___ has a conductive channel only when it is biased properly.
Options
A.
p
-channel JFET
B.
n
-channel D-MOSFET
C.
p
-channel D-MOSFET
D.
n
-channel E-MOSFET
Correct Answer
n
-channel E-MOSFET
Transistors and Applications problems
Search Results
1.
V
CE
approximately equals _______ when a transistor is in saturation.
Options
A.
V
CC
B.
V
B
C. 0.2 V
D. 0.7 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 0.2 V
2. The ac input resistance (
R
in
) of a voltage-divider biased common-emitter amplifier consists of ____________.
Options
A.
B.
C.
D.
Show Answer
Scratch Pad
Discuss
Correct Answer:
3. The ___ oscillator takes advantage of the
piezoelectric effect
.
Options
A. crystal
B. Hartley
C. Colpitts
D.
RC
Show Answer
Scratch Pad
Discuss
Correct Answer: crystal
4. The collector current in a class A amplifier flows for ________ of the ac input signal.
Options
A. < 180°
B. 180°
C. < 360°
D. 360°
Show Answer
Scratch Pad
Discuss
Correct Answer: 360°
5. The power gain (
A
p
) of any transistor amplifier circuit equals the ___________.
Options
A. current gain squared
B. current gain times the voltage gain
C. voltage gain times the output resistance
D. current gain plus the voltage gain
Show Answer
Scratch Pad
Discuss
Correct Answer: current gain times the voltage gain
6. Changing ________ can control the voltage gain of a common-source amplifier.
Options
A. the input voltage
B.
g
m
C.
V
DD
D.
R
S
Show Answer
Scratch Pad
Discuss
Correct Answer:
g
m
7. Removing a bypass capacitor from a common-emitter amplifier circuit will _________ voltage gain and ________ input resistance.
Options
A. increase, decrease
B. decrease, increase
C. decrease, decrease
D. increase, increase
Show Answer
Scratch Pad
Discuss
Correct Answer: decrease, increase
8. A _______________ JFET amplifier provides a voltage gain of less than one.
Options
A. common-source
B. common-channel
C. common-drain
D. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: common-drain
9. The gain of a BJT is called _______ and the gain of a JFET is called _______.
Options
A. beta, alpha
B. transconductance, beta
C. beta, transconductance
D. transconductance, transconductance
Show Answer
Scratch Pad
Discuss
Correct Answer: beta, transconductance
10. The gate-source junction of a JFET must be ________ for proper linear operation.
Options
A. forward-biased
B. reverse-biased
C. either forward-biased or reverse-biased
D. neutral
Show Answer
Scratch Pad
Discuss
Correct Answer: reverse-biased
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