Q. A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then

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Q. A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The minimum normal stress will be

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Q. Which of the following statement is correct?

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Q. In watches, the spring is used to absorb shocks and vibrations.

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Q. The polar moment of inertia of a solid circular shaft of diameter (D) is

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Q. The volumetric strain is the ratio of the

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Q. A thin cylindrical shell of diameter (d), length (l) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to hoop strain is

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Q. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.

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Q. In a thick cylindrical shell subjected to an internal pressure (p), the tangential stress across the thickness of a cylinder is

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Q. A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be

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Q. Two closely-coiled helical springs 'A' and 'B' of the same matenal, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be

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Q. Two shafts 'A' and 'B' have the same material. The shaft 'A' is solid of diameter 100 mm. The shaft 'B' is hollow with outer diameter 100 mm and inner diameter 50 mm. The torque transmitted by shaft 'B' is __________ as that of shaft 'A'.

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Q. The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l = Length of weld, and σt = Allowable tensile stress for weld metal)

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Q. The direct stress, across a principal plane, is known as principal stress.

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Q. On one side of a neutral axis of a beam, there is a tensile stress and on the other side of the beam there is a compressive stress.

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Q. When a body is subjected to a direct tensile stress (σ), the maximum normal stress is equal to the direct tensile stress.

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Q. A reinforced cement concrete beam is considered to be made of

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Q. The ratio of bulk modulus to Young's modulus for a Poisson's ratio of 0.25 will be

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Q. The bending moment diagram for a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is a parabolic curve.

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Q. The bending moment diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, will be

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