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OPTO ELECTRONICS
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1) Which material is used to make LDR for lower end requirements?
Aluminium sulfide
Cadmium sulfide
Zinc sulfide
Copper sulfide
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Correct Answer: Cadmium sulfide
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1) Which material is used to make LDR for lower end requirements?
Aluminium sulfide
Cadmium sulfide
Zinc sulfide
Copper sulfide
2) Which circuit photo SCR opto couplers are used?
DC circuits
AC powered circuits
Amplifier circuits
Counter circuits
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Correct Answer: AC powered circuits
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2) Which circuit photo SCR opto couplers are used?
DC circuits
AC powered circuits
Amplifier circuits
Counter circuits
3) Which circuit uses photo-darlington devices?
DC circuits
Counter circuits
Amplifier circuits
AC powered circuits
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Correct Answer: DC circuits
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3) Which circuit uses photo-darlington devices?
DC circuits
Counter circuits
Amplifier circuits
AC powered circuits
4) What is the advantage of PIN photo diodes?
Low sensitivity in the infrared range
High sensitivity in the infrared range
Medium sensitivity in the infrared range
Low sensitivity in the Ultraviolet range
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Correct Answer: High sensitivity in the infrared range
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4) What is the advantage of PIN photo diodes?
Low sensitivity in the infrared range
High sensitivity in the infrared range
Medium sensitivity in the infrared range
Low sensitivity in the Ultraviolet range
5) Which of the device is opto-coupled TRIACS?
BT136
B3202
2N2648
MOC3020
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Correct Answer: B3202
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5) Which of the device is opto-coupled TRIACS?
BT136
B3202
2N2648
MOC3020
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