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 43 of 82

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Q421.
Assertion (A): When p-n junction is forward biased, steady current flows.

Reason (R): When a p-n junction is forward biased, free electrons cross the junction from n to p and holes from p to n.
Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Q422.
The equivalent circuit of an ideal diode is
Discuss
Answer: (c).a switch
Discuss
Answer: (a).Maximum collector current
Q424.
Assertion (A): The frequency of light used for photoelectric emission is high.

Reason (R): As per Einstein's equation 0.5 mv² < hf - Uw.
Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Discuss
Answer: (d).all of the above
Q426.
When a diode is forward biased, the diode current is
Discuss
Answer: (a).high
Q427.
At room temperature, the current in the, intrinsic semiconductor is due to
Discuss
Answer: (d).holes and electrons
Q428.
Which of these is also called 'hot carrier diode'?
Discuss
Answer: (d).Schottky diode
Q429.
A d.c. power supply has an open circuit voltage of 100 V. When the full load current is drawn, the output drops to 80 V. The percentage voltage regulation is
Discuss
Answer: (d).25%
Q430.
The ratio of impurity atoms to intrinsic semiconductor atoms in an extrinsic semiconductor is about.
Discuss
Answer: (d).1 : 10โธ