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Electronics Mechanic
OPTO ELECTRONICS
Set 3
Set 3
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Q4383
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Which material is used to make LDR for lower end requirements?
A
Aluminium sulfide
B
Cadmium sulfide
C
Zinc sulfide
D
Copper sulfide
Q4384
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Which circuit photo SCR opto couplers are used?
A
DC circuits
B
AC powered circuits
C
Amplifier circuits
D
Counter circuits
Q4385
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Which circuit uses photo-darlington devices?
A
DC circuits
B
Counter circuits
C
Amplifier circuits
D
AC powered circuits
Q4386
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What is the advantage of PIN photo diodes?
A
Low sensitivity in the infrared range
B
High sensitivity in the infrared range
C
Medium sensitivity in the infrared range
D
Low sensitivity in the Ultraviolet range
Q4387
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Which of the device is opto-coupled TRIACS?
A
BT136
B
B3202
C
2N2648
D
MOC3020
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