Electrical Engineering Materials MCQs PDF download for electrical students. Includes MCQs with answers, and resources for competitive exams.
Select the most appropriate Diamagnetic option: Paramagnetic:
A. Permalloy : Super-alloy
B. Nickel : Cobal
C. Iron : Steel
D. Water : AirWhich luminous substance is responsible for the red color fluorescence ?
A. Calcium silicate
B. Zinc sulphide
C. Magnesium silicate
D. Zinc silicateALNICO is a combination of ____ ?
A. iron, cobalt, nickel.
B. aluminium, nickel, iron and cobalt.
C. iron, aluminium.
D. aluminium, nickel.When is the electron pair bonding going to happen ?
A. Share holes
B. Lack holes
C. Share electrons
D. None of themWhich of the following describes a piezoelectric material in an example ?
A. Potassium niobate
B. Lead zirconate titanate
C. Copper
D. All of themWhat is the value of dielectric constant of air ?
A. Less than 1
B. 0
C. 1
D. NoneWhy is a diamond so hard ?
A. Because of high melting point
B. Because of covalent solid
C. Because of large cohesive energy
D. None of themWhich insulating materials are capable of withstanding the highest temperature ?
A. Glass
B. Mica
C. Porcelain
D. All of themWhat is the number of classifications of insulators ?
A. 5
B. 6
C. 7
D. 8What is the dielectric constant of mica?
A. 100
B. 1 to 2
C. 200
D. 3 to 8