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Electronic Mechanic
Electronic Mechanic Set-1
Opto Electronics
3

Opto Electronics MCQ with Answers

3) What is the typical forward voltage drop of the RED colour LED?

1.8 V

2 V

2.1 V

2.2 V

Answer is:

1.8 V

Opto Electronics MCQ with Answers

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Related Opto Electronics MCQ with Answers

4) What is the maximum reverse voltage that can be applied across the general purpose LED?

8 V

12 V

15 V

32 V

Answer is:

8 V

5) What is the typical forward voltage drop of the yellow colour LED?

2.2 V

2.1 V

2 V

1.8 V

Answer is:

2.1 V

6) Which material is used to make LDR for higher end requirements?

Cadmium sulfide

Lead selenide

Zinc sulfide

Copper sulfide

Answer is:

Lead selenide

Which material is used to make LDR for higher end requirements?

7) What is the range of photo current for photo transistor BPX 38?

0.1MA to 1.2MA

0.2MA to 1.6MA

0.3MA to 2.7MA

0.4MA to 3.8MA

Answer is:

0.2MA to 1.6MA

Opto Electronics MCQ with Answers

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