1000+ Electrical Engineering Materials Questions and Answers Pdf - 1

Question: 1

Which of the following types of polarization occurs in a multi phase materials?

(A) electronic polarization

(B) space charge polarization

(C) orientation polarization

(D) ionic polarization

Question: 2

Bohr magneton is defined as

(A) magnetic moment of an electron orbital motion

(B) magnetic moment of nucleus spin

(C) magnetic moment of an electron spin

(D) none of the above

Question: 3

Crystals like diamond and silicon are brittle, because

(A) they contain no dislocations

(B) they contain very few dislocations

(C) they are non crystalline

(D) the stress to move a dislocation is high

Question: 4

Which of the following materials has the highest dielectric strength?

(A) transformer oil

(B) cotton

(C) polystyrene

(D) marble

Question: 5

Which of the following material has least value of dielectric constant?

(A) glass

(B) ceramics

(C) oil

(D) paper