Explore topic-wise MCQs in Engineering Physics.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

Ceramics cannot be _________

A. Oxides
B. Sulfides
C. Nitrides
D. Carbides
Answer» C. Nitrides
Discussion
2.

Electrical counterpart of bar magnets are called as ____________

A. Ceramics
B. Electrical Magnets
C. Electrets
D. Electrostriction
Answer» D. Electrostriction
Discussion
3.

A material of thickness 0.5 mm and dielectric constant 2.5 is subjected to 220 V. What will be the polarization produced?

A. 2.78 X 10<sup>-6</sup> C/m
B. 3.91 X 10<sup>-6</sup> C/m
C. 4.12 X 10<sup>-6</sup> C/m
D. 5.84 X 10<sup>-6</sup> C/m
Answer» E.
Discussion
4.

If the dipole moment of a water drop is 4 X 10-30 m and radius is 1 mm, what is the polarization of the drop?

A. 5.6 X 10<sup>-13</sup> m<sup>-2</sup>
B. 7.4 X 10<sup>-13</sup> m<sup>-2</sup>
C. 8.4 X 10<sup>-13</sup> m<sup>-2</sup>
D. 9.4 X 10<sup>-13</sup> m<sup>-2</sup>
Answer» B. 7.4 X 10<sup>-13</sup> m<sup>-2</sup>
Discussion
5.

What is the relation between r and ?

A. <sub>r</sub> =
B. <sub>r</sub> = 1 +
C. <sub>r</sub> = 1
D. <sub>r</sub> = 1
Answer» C. <sub>r</sub> = 1
Discussion
6.

Dielectrics which show spontaneous polarization are called as _____________

A. Pyroelectric
B. Piezoelectric
C. Ferroelectric
D. Centrosymmetric
Answer» E.
Discussion
7.

CO is a polar dielectric.

A. True
B. False
Answer» B. False
Discussion
8.

Which gas is used for insulation?

A. N<sub>2</sub>
B. O<sub>2</sub>
C. CO
D. CO<sub>2</sub>
Answer» B. O<sub>2</sub>
Discussion
9.

What are the two types of dielectrics?

A. Ferroelectric and Piezoelectric
B. Polar and Non-polar
C. Active and Non-active
D. Stable and Non-stable
Answer» C. Active and Non-active
Discussion