Top 350+ Solved Engineering Materials MCQ Questions Answer
Q. In normalising steel is heated 40-50 C
a. Above the upper transformation range
b. Above the lower transformation range
c. Below the lower transformation range
d. Above room temperature
e. Below the upper transformation range
Q. Which of the following metals has high tendency to get work hardened?
a. Lead
b. Silver
c. Brass
d. Aluminium
e. Copper
Q. The property of materials by which they can be drawn into wires is known as
a. Creep
b. Malleability
c. Elasticity
d. Plasticity
e. Ductility
Q. The strength of timber is
a. less along the grains more across the grains
b. more along the grains less across the grains
c. same in all directions
d. maximum in a direction at 45? to the longitudinal axis
e. None of the above
Q. Permalloy is
a. An nickel and iron alloy having high permeability
b. An alloy similar to carbides
c. A non-ferrous alloy containing nickel copper and chromium
d. A kind of stainless steel
e. A non-ferrous alloy used in aircraft industry
Q. Visco-elastic behaviour is common in
a. Crystalline materials
b. Non-crystalline solids
c. Plastics
d. Rubber
e. Non-crystalline organic polymers
Q. The hardness of steel depends on
a. Heating temperature before quenching
b. The shape and distribution of carbides in iron
c. Amount of carbon it contains
d. Basic process from which it is produced
e. Percentage of alloying elements
Q. When a current is passed through the junction of two different metals, heat is absorbed or liberated depending on the direction of the current. The above phenomenon is known as
a. Kelvin effect
b. Joule's effect
c. Peltier's effect
d. None of the above
e. None of the above
Q. Hastalloy consists of
a. Copper and aluminium
b. Nickel and molybdenum
c. Aluminium and nickel
d. Nickel and copper
e. Nickel, copper and aluminium
Q. Which of the following hardness tester can be used to determine the hardness of a glass sheet?
a. Brinell hardness tester
b. Vickers hardness tester
c. Rockwell hardness tester
d. Shore scleroscope
e. None of the above
Q. A material is known as allotropic or polymoriphic if it
a. Has its atoms distributed in random pattern
b. Responds to heat tretment
c. Has a fixed structure under all conditions
d. Exists in several crystal forms at different temperatures
e. Can be cast
Q. A piezo electric is
a. a material which become polarised when stressed
b. a material which changes dimension due to applied field
c. a material that never gets polarised
d. a material in which magnetising force reduces when current flowing is increased
e. None of the above
Q. A material with unequal anti-parallel atomic magnetic moments is
a. an anti-ferromagnetic
b. ferrimagnetic
c. ferrite
d. non-magnetic
e. None of the above
Q. Boring is generally
a. Followed by reaming
b. Preceded by reaming
c. Followed by drilling
d. Preceded by drilling
e. None of the above
Q. Ferromagnetic alpha iron change to paramagnetic alpha iron at
a. 1500?C
b. 910?C
c. 77?C
d. 1400?C
e. 1650?C