Materials and Components MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Materials and Components, 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 Materials and Components 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 Materials and Components mcq questions that explore various aspects of Materials and Components problems. Each MCQ is crafted to challenge your understanding of Materials and Components 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 Materials and Components 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 Materials and Components. 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 Materials and Components knowledge to the test? Let's get started with our carefully curated MCQs!

Materials and Components MCQs | Page 25 of 44

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Q241.
Which of the following is used in automatic control of street lights?
Discuss
Answer: (b).Photoconductor
Q242.
Assertion (A): In an intrinsic semiconductor J = (ΞΌn x ΞΌp)eni.

Reason (R): Intrinsic charge concentration ni at temperature T is given by ni² = Aβ‚€ T³ e^(-EG0/kT).
Discuss
Answer: (b).Both A and R are true but R is not correct explanation of A
Q243.
When the atom of rare gas is placed in an electric field the nucleus shifts from the centre of electron cloud by an amount x. If the radius of electron cloud is R, then
Discuss
Answer: (a).x << R
Discuss
Answer: (d).none of the above
Q245.
For a superconductor, the relative permeability is
Discuss
Answer: (a).zero
Q246.
The relative permeability of a ferromagnetic material is
Discuss
Answer: (d).1000 or more
Q247.
Assertion (A): Intrinsic resistivity of silicon is lower than that of germanium.

Reason (R): Magnitude of free electron concentration in germanium is more than that of silicon.
Discuss
Answer: (d).A is false but R is true
Q248.
The units for ∈ᡣ are
Discuss
Answer: (d).no units
Q249.
The real part of complex dielectric constant and tanΞ΄ for a dielectric are 2.1 and 5 x 10¯β΄ at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is
Discuss
Answer: (a).1.05 x 10¯³
Q250.
A copper atom is neutral. Its core has a net charge of
Discuss
Answer: (b).+ 1