Explore topic-wise MCQs in Electronic Devices and Circuits.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

Optoisolator is

A. A combination of LED and varactor in the same package
B. A combination of a varactor and photodiode in the same package
C. A combination of LED and a photodiode in the same package
D. A combination of photodiode and Schottky-Barrier Diode in the same package
Answer» D. A combination of photodiode and Schottky-Barrier Diode in the same package
2.

Which of the following is true for LEDs

A. The light emitted by a LED is inversely proportional to the current flowing through the diode
B. LED operate in a manner opposite to the working of the optoelectronics or photodiodes
C. LED cannot be used to generate coherent source of light
D. None of the mentioned
Answer» C. LED cannot be used to generate coherent source of light
3.

Photodiodes are part of

A. Optoelectronics
B. High Intensity Discharge
C. Low pressure Discharge
D. None of the mentioned
Answer» B. High Intensity Discharge