Strength-of-materials Questions Set 7:
When a physical element rotates by an angle θ, what is the angle that the Mohr circle rotates through?
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What is the alternate name of circumferential stress?
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What will develop if a rod is expanded freely due to heating?
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If the maximum shear stress acting on a rectangular beam is 60 N/mm2, calculate the average shear stress.
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Calculate the specific weight of oil if the specific gravity is 0.65 and the specific weight of water is 800 kg/m³.
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Where is the shear stress maximum on a beam section?
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What term is used to define the portion of the test specimen over which the extension or deformation is measured?
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A bar with a cross-sectional area of 0.08 m² and length of 4 m is subjected to a tensile load of 400 kN. Calculate the deformation in the bar. (Take E = 2 × 10⁵ MPa)
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Consider a 250 mm x 15 mm x 10 mm steel bar that is free to expand. If the bar is heated from 15°C to 40°C, what type of stress will develop?
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Two shafts A and B transmit the same power. The speed of shaft A is 300 rpm and the speed of shaft B is 250 rpm. Which shaft has the greater diameter?
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