Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. A material which undergoes no deformation till its yield point is reached and then it flows at a constant stress is known as
a. 25
b. Rigid-plastic
c. Elasto-plastic
d. Plasto-electric
e. Rigid-elastic
Q. The neutral axis of beam
a. Is subjected to maximum stress
b. Is subjected to maximum shear force
c. Has tensile stress on one side and compressive stress on the other
d. Is in the same plane in which the beam bends
e. None of the above
Q. For which of the following diameters a seam-less pipe of 3 mm wall thickness will be considered as a thin walled cylinder?
a. 30 mm
b. 60 mm
c. 80 mm
d. 90 mm
e. All of the above
Q. All elastic materials
a. Elongate on the application of load
b. Shrink on the application of load
c. Permanently deform under load
d. Do not deform under load
e. None of the above
Q. The heaviest I section for the same depth is
a. ISMB
b. ISLB
c. ISHB
d. ISWB
e. None of the above
Q. When a no. of loads rest upon a beam, the deflection at any point is equal to the sum of the deflections at this point due to each of the loads taken separately. This is according to
a. Moment shear relation
b. Theory of flexure
c. Principle of least work
d. Castiglano's theorem
e. Max's well theorem
Q. A form factor is introduced in the design of compressive members to represent the effect of
a. local buckling
b. voids
c. grain orientation
d. diagonal buckling
e. None of the above
Q. As compared to the Brinell hardness lest, the Rockwell method
a. makes a thinner indentation
b. may be used on thicker materials
c. is much slower
d. all of the above
e. None of the above
Q. In a three-hinged beam, the bending moment will be zero at
a. the left hinge
b. the right hinge
c. both the hinges
d. the crown
e. None of the above
Q. Arching of a beam results in
a. increased bending moment throughout
b. reduced bending moment throughout
c. increased bending moment at the support
d. no change in bending moment
e. None of the above
Q. A dead load is
a. One that can be neglected
b. One that does not exist
c. One that is dead
d. One that remains constant.
e. One that does not move
Q. In the simple bending theory one of the assumptions usually made is that the plane sections before bending remain plane after bending. This assumption implies that
a. Stress is proportional to the distance from the neutral axis
b. Stress is uniform in the beam cross section
c. Stress is proportional to strain at all section
d. Stress is uniform in the beam cross-section
e. Strain is proportional to the distance from the neutral axis
Q. Along the principal plane subjected to maximum principal shear
a. The maximum shear stress acts
b. The minimum shear stress acts
c. No shear stress acts
d. Any of the above
e. None of the above
Q. If the value of Young's modulus of elasticity for a material is zero, it implies that the material
a. is in gaseous state
b. is visco-elastic
c. incompressible
d. plastic
e. None of the above