Optoelectronics MCQ

Optoelectronics MCQ | Freshers & Experienced

  • Satyam Jaiswal
  • 18th May, 2021

We are introducing here the best Optoelectronics MCQ Questions, which are very popular & asked various times. This Quiz contains the best 25+ Optoelectronics MCQ with Answers, which cover the important topics of Embedded System so that, you can perform best in Optoelectronics exams, interviews, and placement activities.

Optoelectronics MCQ

1) Optoelectronic devices works on ___________.

  • A. light
  • B.electrical current
  • C.Both A and B
  • D.None of the above

2) Optoelectronics is based on the quantum mechanical effects of light on electronic materials.

  • A. Yes
  • B.No
  • C.May be
  • D.Can't say

3) LED stands for _________.

  • A. light emitting devices
  • B.light emitting diode
  • C.light emitting disc
  • D.None of the above

4) Which among the following devices work on the basis of photo-voltaic effect?

  • A. Photo-diode
  • B.LED
  • C.LCD
  • D.None of the above

5) The transducer used in television transmission works on the principle of ________.

  • A. Electromagnetic Induction
  • B.Photoelectric effect
  • C.Rayleigh's effect
  • D.None of the above

6) Important applications of optoelectronics are ___________.

  • A. Optocoupler
  • B.Optical fiber communications
  • C.Both A and B
  • D.None of the above

7) Photoconductivity, used in ________.

  • A. photoresistors
  • B.charge-coupled imaging devices
  • C.photoconductive camera tubes
  • D.All of the above

8) Photoemissivity is used in ___________.

  • A. Photo-diode
  • B.photoemissive camera tube
  • C.camera tubes
  • D.Photoelectric current

9) Photoelectric or photovoltaic effect is used in ___________.

  • A. optoisolators
  • B.phototransistors
  • C.integrated optical circuit
  • D.All of the above

10) _________ is an electronic component that transfers electrical signals between two isolated circuits by using light.

  • A. phototube
  • B.photocoupler
  • C.photodiode
  • D.None of the above

11) Types of opto-isolators are__________.

  • A. Diode opto-isolator
  • B.Resistive opto-isolator
  • C.Opto-isolated SCR
  • D.All of the above

12) opto-isolators built around pairs of GaAs:Si LEDs

  • A. Bidirectional
  • B.Unidirectional
  • C.Both A and B
  • D.None of the above

13) A ______ is a type of gas-filled or vacuum tube that is sensitive to light.

  • A. photoresistors
  • B.photodiode
  • C.phototube
  • D.None of the above

14) A _________ is a device that converts incident photons into an electrical signal.

  • A. photomultiplier
  • B.photocoupler
  • C.photodiode
  • D.None of the above

15) OLED stands for ________.

  • A. orange light-emitting diode
  • B.organic light-emitting diode
  • C.organic light-emitting disc
  • D.None of the above

16) Advantages of OLED are _______.

  • A. Lower cost in the future
  • B.Better power efficiency and thickness
  • C.Response time
  • D.All of the above

17) Some of the applications of optoelectronic devices are _________.

  • A. superluminescent diodes
  • B.Electroabsorption Modulators
  • C.Electro-optic Modulators
  • D.All of the above

18) A cell is an electronic device that directly converts sun’s energy into electricity.

  • A. photo-voltaic
  • B.photocoupler
  • C.photodiode
  • D.None of the above

19) Light-emitting diode is a _________ semiconductor diode.

  • A. P-P
  • B.P-N
  • C.N-N
  • D.None of the above

20) An ________ is a plastic and transparent fiber made of plastic or glass.

  • A. transparent fiber
  • B.coaxial fiber
  • C.optical fiber
  • D.None of the above

21) __________ is a source of highly monochromatic, coherent and directional light.

  • A. Laser Diodes
  • B.LED
  • C.Both A and B
  • D.None of the above

22) The term optoelectronics is a specific discipline of electronics that focuses on light-emitting or light-detecting devices.

  • A. True
  • B.False

23) What are properties of optoelectronic ?

  • A. It is based on the quantum mechanical effects of light
  • B.It concerns the study and application of electronic devices
  • C.It consists of different semiconductor alloys lying on substrates
  • D.All of the above

24) Is solar cell an optoelectronic device?

  • A. Yes
  • B.No
  • C.May be
  • D.Can't say

25) _______ is the science and technology of generating, controlling, and detecting photons, which are particles of light.

  • A. Photoelectronics
  • B.Photonics
  • C.Optonic
  • D.None of the above

26) The term photonics was coined by ________.

  • A. Einstien
  • B.CV Raman
  • C.Pierre Aigrain
  • D.None of the above

27) Silicon has not been widely used for optoelectronic applications due to __________.

  • A. Si has an indirect band structure
  • B.Si does not exhibit an electro-optic effect
  • C.the bandgap of Si is too large for photodetection
  • D.All of the above

28) What type of semiconductors are preferred in lasers?

  • A. Si semiconductors
  • B.Idle semiconductors
  • C.Compound semiconductors
  • D.None of the above

29) What is the most widely used photonics tool?

  • A. PROP
  • B.FIMMPROP
  • C.Both A and B
  • D.None of the above

30) Integrated Optical Circuit is a device that integrates multiple (at least two) photonic functions and as such is similar to an electronic integrated circuit.

  • A. True
  • B.False

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