Electronic Engineering

Electronic Devices MCQs

Electronics: Electronic Devices MCQs - Subtopic

Optical Diodes MCQ with Answers

Optical Diodes Multiple Choice Questions (MCQ) to practice optical diodes quiz answers PDF, optical diodes worksheets for online degrees. Solve special purpose diodes Multiple Choice Questions and Answers (MCQs), "Optical Diodes Quiz Questions" and answers for online engineering graduate colleges. Learn optical diodes, zener diode applications, zener diode: basic operation and applications, pin diode test prep for grad school interview questions.

"Early LEDs were built up of semiconductor" Multiple Choice Questions (MCQ) on optical diodes with choices si, sio, gaas, and be for online engineering graduate colleges. Solve optical diodes quiz questions for merit scholarship test and certificate programs for undergraduate engineering schools.

MCQs on Optical Diodes

1.

Early LEDs were built up of semiconductor

Si
SiO
GaAs
Be

2.

GaP were used as light emitter to achieve pale

red light
yellow light
green light
blue light

3.

GaAs LED emits

microwaves
IR radiations
Ultra Violet
X-rays

4.

Light color and Visibility is determined in LED by

microwave
wavelength
spectrum
capacitance

5.

A common display device of LED is

seven segment display
red light pointer
LED T V
multilight pointer