Strength of Materials Questions

• The polar modulus for a hollow shaft of outer diameter (D) and inner diameter (d) is
• The bending equation is
• In a riveted joint, when the number of rivets decreases from the inner most row to outer most row, the joint is said to be
• The strain energy stored in a body, when suddenly loaded, is __________ the strain energy stored when same load is applied gradually.
• The section modulus of a circular section about an axis through its C.G., is
• The hoop stress in a thin cylindrical shell is
• Which of the following is the correct torsion equation?
• The rectangular beam 'A ' has length l, width b and depth d. Another beam 'B' has the same width and depth but length is double that of 'A'. The elastic strength of beam 'B' will be __________ as compared to beam A.
• A pressure vessel is said to be a thin shell when the ratio of wall thickness of the vessel to its diameter is __________ 1/10.
• The strength of the shaft is judged by the torque transmitted by the shaft.
• When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy ), the maximum normal stress is
• According to Euler's column theory, the crippling load of a column is given by p = π2 EI/Cl2 In this equation, the value of C for a column with both ends hinged, is
• A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown in the below figure. The shear force at B is equal to
• The ratio of linear stress to the linear strain is called
• When a load on the free end of a cantilever beam is increased, failure will occur
• The length of a conical bar is l, diameter of base is d and weight per unit volume is w. It is fixea at its upper end and hanging freely. The elongation of the bar under the action of its own weight will be
• Two closely coiled helical springs 'A' and 'B' are equal in all respects but the diameter of wire of spring 'A' is double that of spring 'B' The stiffness of spring 'B' will be __________ that of spring 'A'
• A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum normal stress will be
• A simply supported beam 'A' of length l, breadth b, and depth d carries a central point load W. Another beam 'B' has the same length and depth but its breadth is doubled. The deflection of beam 'B' will be __________ as compared to beam 'A'.
• A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The minimum normal stress will be