Top 350+ Solved Engineering Materials MCQ Questions Answer
Q. When the metals are severely deformed in a particular direction, as in rolling or forging (on a macro scale), the mechanical properties may be
a. Anisotropic
b. Identical
c. Isotropic
d. Uniform
e. Non-uniform
Q. The product of blast furnace is known as
a. High carbon steel
b. Steel
c. Pig iron
d. Crude iron
e. Cast iron
Q. The defect responsible for the phenomenon of slip, by which most metals deform plastically, is known as
a. Fracture
b. Twinning
c. Dislocation
d. Strain hardening
e. None of the above
Q. In a 0.2% carbon steel which has been heated above the third critical temperature on cooling at the first critical point the austenite remaining in solution is transformed to new structure called
a. Ferrite
b. Cementite
c. Austenite
d. Ferrite
e. Pearlite
Q. Which material has the best damping capacity
a. Cast iron
b. Mild steel
c. High speed steel
d. Diamond
e. Stainless steel
Q. If a material recovers its original dimensions, when the load is removed, it is known as
a. Elastic
b. Soft
c. Annealed
d. Plastic
e. Brittle
Q. In plain carbon steel as the percentage of carbon increases from 0.2% to 0.8% which of the following decreases?
a. Brinell hardness number
b. Tensile strength
c. Percentage elongation
d. All of the above
e. None of the above
Q. In press work the dies which combine two or more operations at one station are known as
a. Progressive dies
b. Die and punch
c. Simple dies
d. Compound dies
e. Press
Q. Spring steel sections are originally applied in
a. Hardened condition
b. Hardened and tempered condition
c. Annealed condition
d. Carburized condition
e. None of the above
Q. Which of the following ray has least wavelength?
a. Yellow light rays
b. Ultraviolet rays
c. X-rays
d. Cosmic rays
e. Infra-red rays
Q. Cheek is
a. Top surface of metal
b. Physical property of metal
c. Non-ferrous coating on materials
d. Core of the welded joints in case of very thick material
e. Intermediate flask between copes and drag
Q. Which of the following is 'acceptor' impurity for semi-conductor?
a. Arsenic
b. Phosphorous
c. Boron
d. Antimony
e. All of the above
Q. The loss of strength in compression which occurs when there is a gain in strength in the tension due to overloading is
a. Iso-strain
b. Hysteresis
c. Bounhinger effect
d. Relaxation
e. Hooke's effect
Q. Electronic structure of a material is generally studied by
a. Mossbauer studies
b. Microscope
c. Naked eye
d. X-ray and electron diffraction
e. Spectroscope techniques
Q. Steel castings
a. Cannot withstand impact
b. Are not weldable
c. Are weldable
d. Have poor endurance properties
e. Can withstand impact