OPTO ELECTRONICS - Quiz

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

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

5) Which of the device is opto-coupled TRIACS?

BT136 B3202 2N2648 MOC3020