Top 350+ Solved Engineering Materials MCQ Questions Answer
Q. Plastic deformation which is carried out in a temperature region and over a time interval such that the strain hardening is not relieved is known as
a. Hot work
b. Cold work
c. Annealing
d. Bauschinger effect
e. None of the above
Q. Within elastic limits
a. Load is gradually applied
b. Deformation is permanent
c. Deformation is proportional to the load
d. Load is less
e. Load is static
Q. The ability of material to absorb energy when deformed elastically and to return it when unloaded is called
a. Resilience
b. Fatigue strength
c. Creep
d. Toughness
e. Hardness
Q. The variable stress below which the probability of failure of a material is negligible, is called
a. Endurance limit
b. Tolerance limit
c. Yield point
d. Elastic limit
e. Plastic limit
Q. In a glass metal seal the two components must match with respect to their
a. Fatigue strength
b. Hardness
c. Semi-conductors
d. Ductility
e. Thermal expansion
Q. The phenomenon of materials in which slow extension of materials takes place with the time at constant load is known as
a. Malleability
b. Elasticity
c. Plasticity
d. Creep
e. Ductility
Q. Tensile strength of common varieties of cast iron is in the range
a. 40 - 50 M Pa
b. 50 - 80 M Pa
c. 500 - 650 M Pa
d. 650 - 1000 M Pa
e. 140 - 500 M Pa
Q. Which of the following material has least coefficient of expansion?
a. Dead mild steel
b. Brass
c. Manganin
d. Y-alloy
e. Invar
Q. Iron alloyed with carbon more than 2% is called
a. Mild steel
b. Carbon steel
c. Cast iron
d. Alloy steel
e. High carbon steel
Q. A surface damage which results when two surfaces in contact experience light periodic relative motion is
a. Fretting
b. Pitting
c. Corrosion
d. Surface wear
e. None of the above
Q. During induction hardening the depth of hardening is controlled by
a. Current
b. Voltage
c. Frequency
d. Phase angle
e. None of the above
Q. Stress concentration may be caused by
a. Change in shape
b. A home or a notch in the body
c. Polishing or painting a surface
d. Change in dimensions
e. Change in cross-sectional area
Q. Polystrene at room temperature is
a. Brittle
b. Malleable
c. Ductile
d. Soft
e. None of the above
Q. Small end of a connecting rod forging is
a. Super finished
b. Ground
c. Broached
d. Honned
e. Lapped