Strength of Materials Questions

• At the neutral axis of a beam, the shear stress is
• The product of Young's modulus (E) and moment of inertia (I) is known as
• The actual neutral axis of a reinforced cement concrete beam is based on the principle that the moment of areas of compression and tension zones at the neutral axis are equal.
• A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________ with one end fixed and the other end free.
• If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.
• 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