Strength of Materials Questions

• 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
• When a rectangular beam is loaded longitudinally, the shear force develops on the top layer.
• When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear stress (τxy), the maximum shear stress is
• In a simply supported beam carrying a uniformly distributed load w per unit length, the point of contraflexure
• A riveted joint may fail by
• Which of the following is a proper sequence?
• According to Unwin's formula, the relation between diameter of rivet hole (d) and thickness of plate (t) is given by (where d and t are in mm)
• The bending moment diagram for a simply supported beam loaded in its centre is
• A shear stress across a plane, is always accompanied by a balancing shear stress across the plane and normal to it.
• The total strain energy stored in a body is called proof resilience.
• In the below figure, curve D represents mild steel.
• 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 one end fixed and the other end hinged, is 1/2.
• The moment of resistance of a balanced reinforced concrete beam is based on the stresses in
• The Rankine's constant for a mild steel column with both ends hinged is
• 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 tangential stress is given by
• Modulus of rigidity may be defined as the ratio of