Electrical Engineering Materials - Practice Test

(A) Cast-iron

(B) Graphite

(C) Rubber

(D) Glass

(C) Rubber

(A) Age hardening

(B) Alloying

(C) Temperature

(D) Cold work

Age hardening

(A) Decreases

(B) Increases

(C) Remains constant

(D) Becomes temperature independent

(B) Increases

(A) Where lubrication is difficult or im-possible

(B) Where corrosive chemical action exists

(C) Where high temperature exists

(D) All of the above

(D) All of the above

(A) Holes can exist in certain semiconductors only

(B) Holes can exist in any material including conductors

(C) Holes may constitute an electric current

(D) Holes can be considered as a net positive charge

(B) Holes can exist in any material including conductors

Electrical Engineering Materials - Study Mode