Q.1
The strain energy stored in a hollow circular shaft of outer diameter (D) and inner diameter (d) subjected to shear stress is
Q.2
Shear stress induced in a shaft subjected to tension will be
Q.3
The Young's modulus of a material is 125 GPa and Poisson’s ratio is 0.25. The modulus of rigidity of me material is
Q.4
A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be
Q.5
The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
Q.6
Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in
Q.7
In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called
Q.8
The direct stress induced in a long column is __________ as compared to bending stress.
Q.9
In a simple bending of beams, the stress in the beam varies
Q.10
The moment of resistance of a balanced reinforced concrete beam is based on the stresses in
Q.11
The bending equation is
Q.12
In a watch, the spring is used to store strain energy. This energy is released
Q.13
In a beam where shear force changes sign, the bending moment will be
Q.14
In a simple bending theory, one of the assumptions is that the plane sections before bending remain plane after bending. This assumption means that
Q.15
The simply supported beam 'A' of length ‘l’ carries a central point load ‘W’. Another beam 'B' is loaded with a uniformly distributed load such that the total load on the beam is ‘W’. The ratio of maximum deflections between beams 'A' and 'B' is
Q.16
For a simply supported beam of length ‘l’, when a concentrated load W is applied in the center of the beam, the maximum deflection is
Q.17
The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called
Q.18
If the depth is kept constant for a beam of uniform strength, then its width will vary in proportional to
Q.19
When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the stiffness of the spring is given by
Q.20
The polar moment of inertia of a hollow shaft of outer diameter (D) and inner diameter (d) is
Q.21
The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) is
Q.22
The polar modulus for a hollow shaft of outer diameter (D) and inner diameter (d) is
Q.23
A steel bar 2 m long, 20 mm wide and 10 mm thick is subjected to a pull of 2 kN. If the same bar is subjected to a push of 2 kN, the Poisson’s ratio of the bar in tension will be __________ the Poisson's ratio for the bar in compression.
Q.24
The energy absorbed in a body, when it is strained within the elastic limits, is known as
Q.25
The assumption made in Euler's column theory is that
Q.26
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.
Q.27
The maximum deflection of a cantilever beam of length ‘l’ with a point load ‘W’ at the free end is
Q.28
The rectangular beam 'A' has length l, width b and depth d. Another beam 'B' has the same length and width but depth is double that of 'A'. The elastic strength of beam B will be __________ as compared to beam A.
Q.29
The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.
Q.30
When a body is subjected to biaxial stress i.e. direct stresses (σx) and (σy) in two mutually perpendicular planes accompanied by a simple shear stress (τxy), then maximum shear stress is
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