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Objective Questions
ITI
Electronic Mechanic
Electronic Mechanic Set-1
Opto Electronics
Opto Electronics MCQ with Answers
1)
What is the minimum forward current If for single colour LEDs?
5 MA
10 MA
20 MA
30 MA
Answer
Explanation
Answer is:
20 MA
Explanation:
.
2)
What is the forward voltage drop of single colour Red LED?
1.8 V
2 V
2.1 V
2.2 V
Answer
Answer is:
1.8 V
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
Answer is:
1.8 V
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
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
Answer is:
2.1 V
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