www.McqFinder.in

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
ITI
Electronic Mechanic
Electronic Mechanic Set-1
Opto Electronics
5

Opto Electronics MCQ with Answers

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

Opto Electronics MCQ with Answers

For more MCQ's Click Here

Related Opto Electronics MCQ with Answers

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

8) What is the type of transistor BPX81?

Uni - Junction transistor

NPN - Photo transistor

PNP - Photo transistor

Audio frequency transistor

Answer is:

NPN - Photo transistor

9) What is the function of opto-coupler in the switching operation of digital input signal?

Amplifier the signal

Converts voltage into current

Produces electrical noise signal

Defects the operation of switching signal

Answer is:

Defects the operation of switching signal

Opto Electronics MCQ with Answers

For more MCQ's Click Here