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Subel. A
A
48 questions
B
60 questions
C
60 questions
D
24 questions
E
48 questions
F
60 questions
G
36 questions
H
18 questions
I
18 questions
J
30 questions
K
36 questions
L
48 questions
M
18 questions
N
30 questions
O
30 questions
P
24 questions
Q
12 questions
6 questions
1
2
3
4
5
6
7
8
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Subelement A
Principles
Section 5
Semi-conductors
3
5A1
What are the two most commonly-used specifications for a junction diode?
A.
Maximum forward current and capacitance.
B.
Maximum reverse current and PIV (peak inverse voltage).
C.
Maximum reverse current and capacitance.
Correct Answer
D.
Maximum forward current and PIV (peak inverse voltage).
3
5A1
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3
5A2
What limits the maximum forward current in a junction diode?
A.
The peak inverse voltage (PIV).
Correct Answer
B.
The
junction
temperature
.
C.
The forward voltage.
D.
The back EMF.
3
5A2
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3
5A3
MOSFETs are manufactured with THIS protective device built into their gate to protect the device from static charges and excessive voltages:
A.
Schottky diode.
B.
Metal oxide varistor (MOV).
Correct Answer
C.
Zener
diode.
D.
Tunnel diode.
3
5A3
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3
5A4
What are the two basic types of junction field-effect transistors?
Correct Answer
A.
N-channel and P-channel.
B.
High power and low power.
C.
MOSFET and GaAsFET.
D.
Silicon FET and germanium FET.
3
5A4
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3
5A5
A common emitter amplifier has:
A.
Lower input impedance than a common base.
Correct Answer
B.
More
voltage gain than a common collector.
C.
Less current gain than a common base.
D.
Less voltage gain than a common collector.
3
5A5
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3
5A6
How does the input impedance of a field-effect transistor compare with that of a bipolar transistor?
Correct Answer
A.
An FET has high input impedance; a bipolar transistor has low input impedance.
B.
One cannot compare input impedance without first knowing the supply voltage.
C.
An FET has low input impedance; a bipolar transistor has high input impedance.
D.
The input impedance of FETs and bipolar transistors is the same.
3
5A6
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