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 51 of 82

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Q501.
Assertion (A): When light falls at junction of p-n photodiode, its p side becomes positive and n side becomes negative.

Reason (R): When a photodiode is short circuited, the current in the external circuit flows from p side to n side.
Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Q502.
In what condition does BJT act like an open switch
Discuss
Answer: (a).cut off
Discuss
Answer: (d).gate source cut off voltage is equal to negative pinch off voltage
Q504.
A power supply has full-load voltage of 20 V. What will be its no load voltage when its voltage regulation is 100%
Discuss
Answer: (d).40 V
Q505.
For a photo conductor with equal electron and hole mobilities and perfect ohmic contacts at the ends, an increase in the intensities of optical illumination results in
Discuss
Answer: (c).a reduction resistance
Q506.
Ferrities are particularly suited for high frequency applications because of their
Discuss
Answer: (b).low eddy current loss
Discuss
Answer: (a).lies at the centre of forbidden energy gap
Discuss
Answer: (c).energy as well as momentum
Q509.
In a forward biased p-n junction current enters p material as hole current and leaves n material as electron current of the same magnitude.
Discuss
Answer: (a).True
Q510.
When P-N junction is in forward bias, by increasing the battery voltage
Discuss
Answer: (b).current through P-N junction increases