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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Q. The bending moment at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre is wl/4.

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Q. 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 shear stress will be

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Q. In a thick cylindrical shell subjected to an internal pressure (p), the tangential stress is always a tensile stress where as the radial stress is a compressive stress

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Q. A column is said to be a short column, when

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

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Q. In order to avoid tearing off the plate at an edge, the distance from the centre of the rivet hole to the nearest edge of the plate (i.e. margin) should be (where d = Diameter of rivet hole in mm)

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Q. In a riveted joint, when the rivets in the various rows are opposite to each other, the joint is said to be

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Q. The load required to produce a unit deflection in a spring is called

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Q. A pressure vessel is said to be a thin shell when it is made of thin sheets.

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