Top 1000+ Solved Strength of Materials MCQ Questions Answer
Q. Proof resilience is the maximum energy stored at
a. limit of proportionality
b. elastic limit
c. plastic limit
d. none of the above
Q. Strain energy stored in a member is given by
a. 0.5 x stress x volume
b. 0.5 x strain x volume
c. 0.5 x stress x strain x volume
d. 0.5 x stress x strain
Q. A steel rod of cross sectional area equal to 1000 mm2 is 5 m long. If a pull of 100 kN is suddenly applied to it, then the maximum stress intensity will be
a. 50 N/mm2
b. 100 N/mm2
c. 200 N/mm2
d. 400 N/mm2
Q. If the depth of a beam of rectangular section is reduced to half, strain energy stored in thebeam becomes
a. 1/4 time
b. 1/8 time
c. 4 times
d. 8 times
Q. The specimen in a Charpy impact test is supported as a
a. cantilever beam
b. simply supported beam
c. fixed beam
d. continuous beam
Q. Impact test enables one to estimate the property of
a. hardness
b. toughness
c. strength
d. creep
Q. A fletched beam is used to
a. Change the shape of the beam
b. Effect the saving in material
c. Equalize the strength in tension and compression
d. Increase the cross-section of the beam
Q. The property of metal which allows it to deform continuously at slow rate without any further increase in stress is known as
a. fatigue
b. creep
c. plasticity
d. resilience
Q. The stress below which a material has a high probability of not failing under reversal ofstress is known as
a. tolerance limit
b. elastic limit
c. proportional limit
d. endurance limit
Q. A three hinged parabolic arch rib is acted upon by a single load at the left quarter point. If the central rise is increased and the shape of arch altered to segmental without changing the other details, the horizontal thrust will
a. increase definitely
b. decrease definitely
c. be difficult to predict
d. increase or decrease depending upon the radius of the segmental arch
Q. For ductile materials, the most appropriate failure theory is
a. maximum shear stress theory
b. maximum principal stress theory
c. maximum principal strain theory
d. shear strain energy theory
Q. At a point in a steel member, the major principal stress is 2000 kg/cm2 and the minor principal stress is compressive. If the uni-axial tensile yield stress is 2500 kg/cm2, then the magnitude of the minor principal stress at which yielding will commence, according to the maximum shearing stress theory, is
a. 1000 kg/cm2
b. 2000 kg/cm2
c. 2500 kg/cm2
d. 500 kg/cm2
Q. For the design of a cast iron member, the most appropriate theory of failure is
a. Mohr's theory
b. Rankine's theory
c. Maximum strain theory
d. Maximum shear energy theory