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Electronic Mechanic
Electronic Mechanic Set-1
Opto Electronics
14

Opto Electronics MCQ with Answers

14) 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

Answer is:

High sensitivity in the infrared range

Opto Electronics MCQ with Answers

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Related Opto Electronics MCQ with Answers

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

BT136

B3202

2N2648

MOC3020

Answer is:

B3202

16) Which is the combination of photo transistor?

LASER diode and pin diode

Photo transistor and DIAC

Photo diode and transistor

Photo resistor and TRIAC

Answer is:

Photo diode and transistor

17) What is the advantage of photo transistors over photo diodes?

Considerably lower sensitivity

Limit voltage handling capacity

Considerable greater sensitivity

Vulnerable to electrical sources

Answer is:

Considerable greater sensitivity

18) What is the use of photo transistor?

Used in comparator circuit

Used as light controlled switch

Used as oscillator

Used as demodulator

Answer is:

Used as light controlled switch

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