1000+ Engineering Materials Quiz Questions and Answers Pdf - 2

Question: 6

Thermonic emission occurs in

(A) transistors

(B) ferrite cores

(C) copper conductors

(D) vacuum tubes

Question: 7

The coils of D.C. motor starter are wound with wire of

(A) nichrome

(B) manganin

(C) kanthal

(D) copper

Question: 8

The kinetic energy of a bounded electron is

(A) infinite

(B) equal to that of unbounded electron

(C) greater than that of unbounded electron

(D) less than that of unbounded electron

Question: 9

Mercury as an electric contact material is

(A) a gas

(B) a metal liquid

(C) a metal

(D) a liquid

Question: 10

Which of the following materials is preferred for transmitting electrical energy over long distance?

(A) steel reinforced aluminium

(B) steel reinforced copper

(C) aluminium

(D) copper