Strength of Materials Questions

• The buckling load for a given column depends upon
• The hoop stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (p) is (where η = Efficiency of the riveted joint)
• Fatigue test is carried out for
• According to Euler's column theory, the crippling load of a column is given by p = π2 EI/Cl2. In the Euler's formula, the value of C for a column with both ends fixed is 4.
• When a closely-coiied helical spring of mean diameter (D) is subjected to an axial load (W), the deflection of the spring (δ) is given by (where d = Diameter of spring wire, n = No. of turns of the spring, and C = Modulus of rigidity for the spring material)
• If percentage elongation of a certain specimen made of a material 'A' under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material 'B' is 40%, then material 'B' is more ductile than material 'A'.
• In the below figure, the point B represents upper yield point.
• Lame's theory is associated with
• The centre to centre distance, between two consecutive rivets in a row, is called
• Factor of safety is defined as the ratio of
• The torsional rigidity of a shaft is expressed by the torque required to produce a twist of one radian per unit length of a shaft.
• When a rectangular beam is loaded transversely, the maximum tensile stress is developed on the
• For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is
• A fixed beam is one which is fixed at __________ of its ends.
• The relation between modulus of elasticity (E) and modulus of rigidity (C) is given by
• The bending moment on a section is maximum where shear force is
• When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is
• Whenever some external system of forces acts on a body, it undergoes some deformation. As the body undergoes some deformation, it sets up some resistance to the deformation. This resistance per unit area to deformation, is called
• The layer at the centre of gravity of the beam as shown in the below figure, will be
• A simply supported beam 'A' of length l, breadth b and depth d carries a central point load W. Another bream 'B' has the same length and breadth but its depth is doubled. The deflection of beam 'B' will be double as compared to beam 'A'.