EXAMIANS
In a shaft, the shear stress is not directly proportional to
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A close coil helical spring when subjected to a moment M having its axis along the axis of the helix
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A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm² is:
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The yield moment of a cross section is defined as the moment that will just produce the yield stress in
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The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is
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A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is
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If a solid shaft (diameter 20 cm, length 400 cm, N = 0.8 × 105 N/mm²) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm 2, the angle of twist in radians, is
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A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm²), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is
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Flat spiral springs
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Gradually applied static loads do not change with time their
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