Explore topic-wise MCQs in Engineering Materials Metallurgy.

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the dielectric constant of Nylon 6, 6 at 60 Hz?

A. 3.5
B. 4
C. 7
D. 8
Answer» C. 7
Discussion
2.

What is the dielectric strength of mica?

A. 10 * 106 Vm-1
B. 100 * 106 Vm-1
C. 25 * 106 Vm-1
D. 15 * 106 Vm-1
Answer» C. 25 * 106 Vm-1
Discussion
3.

Polarization occurring due to magnetic moment is known as ______

A. Ionic
B. Electronic
C. Orientation
D. Space charge
Answer» D. Space charge
Discussion
4.

Which polarization process does this figure represent?

A. Ionic
B. Electronic
C. Orientation
D. Space charge
Answer» C. Orientation
Discussion
5.

POLARIZATION_OCCURRING_DUE_TO_MAGNETIC_MOMENT_IS_KNOWN_AS_______?$

A. Ionic
B. Electronic
C. Orientation
D. Space charge
Answer» D. Space charge
Discussion
6.

What is the dielectric constant of Nylon 6, 6 at 60 Hz?$

A. 3.5
B. 4
C. 7
D. 8
Answer» C. 7
Discussion
7.

What is the dielectric strength of mica?$

A. 10 * 10<sup>6</sup> Vm<sup>-1</sup>
B. 100 * 10<sup>6</sup> Vm<sup>-1</sup>
C. 25 * 10<sup>6</sup> Vm<sup>-1</sup>
D. 15 * 10<sup>6</sup> Vm<sup>-1</sup>
Answer» C. 25 * 10<sup>6</sup> Vm<sup>-1</sup>
Discussion
8.

The electrical response of a crystal is known as _______

A. Dielectric strength
B. Dielectric constant
C. Piezoelectric effect
D. Hysteresis
Answer» D. Hysteresis
Discussion
9.

What is the electric polarizability of helium?

A. 0.18 * 10<sup>-40</sup> Fm<sup>2</sup>
B. 0.35 * 10<sup>-40</sup> Fm<sup>2</sup>
C. 1.43 * 10<sup>-40</sup> Fm<sup>2</sup>
D. 3.54 * 10<sup>-40</sup> Fm<sup>2</sup>
Answer» B. 0.35 * 10<sup>-40</sup> Fm<sup>2</sup>
Discussion
10.

Which of the following factors are relevant for change in dielectric strength?

A. Decreases with a decrease in thickness
B. Decreases with a decrease in temperature
C. Decreases with an increase in humidity
D. Decreases with a decrease in frequency
Answer» D. Decreases with a decrease in frequency
Discussion
11.

What is the charge of an electron?

A. 1.602 * 10<sup>-16</sup>
B. 1.602 * 10<sup>-17</sup>
C. 1.602 * 10<sup>-18</sup>
D. 1.602 * 10<sup>-19</sup>
Answer» E.
Discussion
12.

How is the dielectric strength denoted as?

A. s<sup>-1</sup>
B. Vm<sup>-1</sup>
C. Fm<sup>2</sup>
D. CV<sup>-1</sup>
Answer» C. Fm<sup>2</sup>
Discussion
13.

What is the unit of polarization?

A. Cm
B. Vm<sup>-1</sup>
C. Cm<sup>-2</sup>
D. Fm<sup>2</sup>
Answer» D. Fm<sup>2</sup>
Discussion
14.

What is the value of dielectric constant of free space?

A. 8.854 * 10<sup>-9</sup> F m<sup>-1</sup>
B. 8.854 * 10<sup>-12</sup> F <sup>-1</sup>
C. 8.854 * 10<sup>-15</sup> F <sup>-1</sup>
D. 8.854 * 10<sup>-6</sup> F <sup>-1</sup>
Answer» C. 8.854 * 10<sup>-15</sup> F <sup>-1</sup>
Discussion