Explore topic-wise MCQs in Mechatronics Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Mechatronics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Which electromagnetic rays is emitted GaAs LED’s ?

A. Infrared
B. Visible light
C. Ultraviolet
D. Radio
Answer» B. Visible light
Discussion
2.

Optical isolator is also called as ________

A. Opaque isolator
B. Optical coupling
C. Optocoupler
D. Optical resistor
Answer» D. Optical resistor
Discussion
3.

Opto-isolator uses a source of light for transmission, most commonly “near infrared light emitting diodes”.

A. True
B. False
Answer» B. False
Discussion
4.

Which alloy is used for red, orange and yellow LED’s?

A. InGaN (Indium gallium nitride)
B. GaAs (Gallium arsenide)
C. (AlGaInP) Aluminum gallium indium phosphide
D. TiO2(titanium dioxide)
Answer» D. TiO2(titanium dioxide)
Discussion
5.

Which alloy is used for green blue and white LED’s?

A. InGaN (Indium gallium nitride)
B. GaAs (Gallium arsenide)
C. (AlGaInP) Aluminum gallium indium phosphide
D. TiO2(titanium dioxide)
Answer» B. GaAs (Gallium arsenide)
Discussion