Electronic Devices and Circuits MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Electronic Devices and Circuits, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Electronic Devices and Circuits MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Electronic Devices and Circuits mcq questions that explore various aspects of Electronic Devices and Circuits problems. Each MCQ is crafted to challenge your understanding of Electronic Devices and Circuits principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Electronic Devices and Circuits MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Electronic Devices and Circuits. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Electronic Devices and Circuits knowledge to the test? Let's get started with our carefully curated MCQs!

Electronic Devices and Circuits MCQs | Page 40 of 82

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Q391.
If an electron move through a potential difference of 500 V, the energy possesses by it will be
Discuss
Answer: (c).500 eV
Q392.
In an intrinsic semiconductor, the intrinsic charge concentration at any absolute temperature T is proportional to
Discuss
Answer: (c).
Q393.
The conductivity of an intrinsic semiconductor is (symbols have the usual meanings).
Discuss
Answer: (c).ฯƒi = eni (ฮผn + ฮผp)
Q394.
The current due to thermionic emission is proportional to
Discuss
Answer: (b).
Q395.
For radiating ultraviolet rays, LEDs use
Discuss
Answer: (a).zinc sulphide
Q396.
The forbidden band in semiconductors is of the order of
Discuss
Answer: (b).1 eV
Discuss
Answer: (b).emitter base : forward, collector base : reverse
Q398.
A FET is to be operated as voltage variable resistor. For this drain to source voltage VDS should be,
Discuss
Answer: (c).< VP
Q399.
Assertion (A): FET has characteristics very similar to that of pentode.

Reason (R): Both FET and pentode are voltage controlled devices.
Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Q400.
The current gain of a bipolar transistor drops at high frequencies because of
Discuss
Answer: (a).transistor capacitance