Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. The limiting values of Poisson's ratio are
a. 0 and 1
b. ?1 and +1
c. ?0.5 and +0.5
d. ?1 and +0.5
e. None of the above
Q. The effect of arching a beam is to
a. increase the shear force
b. reduce the shear force
c. reduce the bending moment throughout
d. increase the bending moment throughout
e. None of the above
Q. A beam supported at more than two places is known as
a. Flitched beam
b. Uniform beam
c. Continuous beam
d. Economical beam
e. None of the above
Q. A spring steel ribbon 3.2 mm wide, 0.5 mm thick is wound on a 500 mm diameter cylinder. If E = 2 x 105 N/mm2, the maximum stress in the steel will be
a. 100 N/mm2
b. 200 N/mm2
c. 400 N/mm2
d. 800 N/mm2
e. None of the above
Q. In a universal testing machine during the testing of a specimen of original cross-sectional area 1 cm2 the maximum load appliied was 7.5 tonnes and neck area 0.6 sq. cm. The ultimate tensile strength of the specimen is
a. 12.5 tonnes/cm2
b. 10.0 tonnes/cm2
c. 7.5 tonnes/cm2
d. 4.5 tonnes/cm2
e. None of the above
Q. It is desired to punch a hole of 20 mm diameter in a plate 20 mm think. If the shear stress of mild steel is 30 kg/mm2, the force necessary for punching would be approximately in the range
a. 20 - 25 tonnes
b. 15 - 20 tonnes
c. 10 - 15 tonnes
d. 35 - 40 tonnes
e. 25 - 35 tonnes
Q. A spherical pressure vessel is made of thin magnesium plate 0.25 cm thick. The main diameter of the sphere is 600 cm and allowable stress in tension is 900 kg/cm2. The safe internal gas pressure for the vessel would be
a. 5.5 kg/cm2
b. 3.0 kg/cm2
c. 0.5 kg/cm2
d. 4.77 kg/cm2
e. 1.5 kg/cm2
Q. Materials exhibiting time bound behaviour are known as
a. Anelastic
b. Visco elastic
c. Reactive
d. Fissile
e. Isentropic
Q. The shear stress when a circular shaft subjected to torsion is
a. maximum, maximum
b. minimum, minimum
c. maximum, minimum
d. minimum, maximum
e. None of the above
Q. The deflection of a beam may be reduced by
a. decreasing the depth of beam
b. increasing the span
c. providing greater end restrains
d. any of the above methods
e. None of the above
Q. The safe working pressure for a spherical vessel 1.5 m diameter and 1.5 cm wall thickness with limiting tensile stress of 450 kg/cm2 would be
a. 18 kg/cm2
b. 36 kg/cm2
c. 4.5 km/cm3
d. 9 kg/cm2
e. 45 kg/cm2
Q. For a shear force to be uniform throughout the span of a simply supported beam, it should be subjected to
a. a couple at mid span
b. a couple at any point on the span
c. a uniformly distributed load
d. two concentrated loads spaced at third points
e. None of the above
Q. A cylindrical section having no joint is known as
a. Perfect section
b. Strong section
c. Jointless section
d. Seamless section
e. Stress free section
Q. A beam of uniform strength is one in which
a. The bending stress is same at every section
b. The bending moment is same at every section
c. The cross-section is same throughout
d. The stiffness is same at every section
e. The load on fibres is same at every section