Exercise: Special Purpose Diodes

Questions for: Special Purpose Diodes

Refer to this figure. Which symbol is correct for a photodiode?

A:
a
B:
b
C:
c
D:
d
Answer: C
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What diode operates only with majority carriers?
A:
laser
B:
tunnel
C:
Schottky
D:
step-recovery
Answer: C
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An 8.2 V zener has a resistance of 5. The actual voltage across its terminals when the current is 25 mA is
A:
8.2 V.
B:
125 mV.
C:
8.325 V.
D:
8.075 V.
Answer: C
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The process of emitting photons from a semiconductive material is called
A:
photoluminescence.
B:
gallium arsenide.
C:
electroluminescence.
D:
gallium phosphide.
Answer: C
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Refer to this figure. If the load current increases, IR will ________ and IZ will ________.

A:
remain the same, increase
B:
decrease, remain the same
C:
increase, remain the same
D:
remain the same, decrease
Answer: D
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