Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. Strain rosettes are generally used for
a. Measurement of resilience
b. Measurement of proof stress
c. Measurement of shear strain
d. Measurement of longitudinal strains
e. Measurement of load
Q. When a strip made of iron and copper is heated
a. It bends
b. It gets twisted
c. Iron bends on convex side
d. Iron bends on concave side
e. None of the above
Q. The ratio of maximum shear stress to average shear stress in case of a circular beam transmitting power is equal to
a. 3?4
b. 5?4
c. 2?5
d. 4?3
e. 4?5
Q. In case the modulus of elasticity for a material is 200 GN/m2 and Poisson's ratio is 0.25, the modulus of rigidity is
a. 250 GN/m2
b. 125 GN/m2
c. 80 GN/m2
d. 320 GN/m2
e. None of the above
Q. The ratio of maximum shear stress to the average shear stress in a rectangular beam subjected to torsion is
a. 4?5
b. 5?4
c. 3?4
d. 3?2
e. 2?3
Q. The safe value of stress under which a member subjected to reversible tensile or compressive stress will not fail is known as
a. Safe stress
b. Fatigue stress
c. Endurance limit
d. Proof stress
e. Elastic limit stress
Q. When a member is subjected to axial tensile load, the greatest normal stress is equal to
a. half the maximum shear stress
b. maximum shear stress
c. twice the maximum shear stress
d. four times the maximum shear stress
e. None of the above
Q. If the load at the free end of a cantilever beam is increased, the failure will occur
a. Any where between free end and centre
b. At the centre
c. At the free and
d. At the support
e. Any where between free end and support
Q. Moment area method is useful determining the following in a beam
a. slope and deflection at point
b. Shear force and bending moment at a point
c. tensile and compressive stresses at a point
d. None of the above
e. None of the above
Q. According to Rankine's theory of failure, elastic failure occurs
a. When the minor principal stress is equal to the elastic limits value in a simple tension test
b. When the greatest principal stress reaches the elastic limit value in simple tension test
c. When the greatest principal stress is equal to the stress corresponding to the upper yield limit in a tension test
d. None of the above
e. None of the above
Q. For a beam of length L fixed at end A and simply supported at end B and loaded uniformly by a load W the maximum bending moment will occur at
a. Centre C
b. B
c. A
d. Between AC
e. Between CD
Q. Necking in case of ductile materials begins at the
a. elastic limit point
b. upper yield point
c. lower yield point
d. ultimate point
e. None of the above
Q. The ratio of average shear stress to maximum shear stress for a circular section is
a. 3?2
b. 2?3
c. 4?3
d. 2
e. 3?4
Q. The bending moment diagram for a cantilever beam subjected to bending moment at the end of the beam would be
a. Rectangle
b. Triangle
c. Parabola
d. Cubic parabola
e. None of the above
Q. For which of following material the value of Poissons ratio is more than 1?
a. Cork
b. Dead mild steel
c. Wood
d. Plastic
e. None of the above