Strength of Materials Questions

• Principle plane is a plane on which the shear stress is
• The ratio of change in volume to the original volume is called
• The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
• When a closely-coiled helical spring is subjected to an axial load, it is said to be under
• When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal
• For a 25 mm hole drilled in plates, the diameter of rivet shank should be
• The shear force of a simply supported beam carrying a central point load changes sign at its midpoint.
• The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.
• The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length.
• The Rankine's theory for active earth pressure is based on the assumption that
• An overhanging beam must overhang on both sides.
• A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p). The stress in the shell material is
• The maximum tangential stress in a thick cylindrical shell is always __________ the internal pressure acting on the shell.
• The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of w per unit length is
• The strain energy stored in a spring, when subjected to maximum load, without suffering permanent distortion, is known as
• The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx and σy) acting at a body across two mutually perpendicular planes. The normal stress on an oblique section making an angle θ with the minor principle plane is given by
• If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then
• A lap joint is always in __________ shear.
• In a beam where shear force changes sign, the bending moment will be
• When a thin cylindrical shell is subjected to an internal pressure, there will be