Q. An axial pull of 35000 N on a bar consisting of two lengths as shown with their respective dimensions. What will be the total extension of the bar if the young’s modulus = 2.1 x 10⁵ ?

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Q. An axial pull of 20 kN on a bar of two equal lengths of 20cm as shown with their respective dimensions. What will be the total extension of the bar if the young’s modulus = 2×10⁵ ?

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Q. A bar shown in diagram is subjected to load 160kN. If the stress in the middle portion Is limited to 150N/mm², what will be the diameter of the middle portion?

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Q. A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. what will be the value of P necessary for equilibrium?

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Q. A tensile rod of 40kN is acting on a rod of diameter 40mm and of length 4m. a bore of diameter 20mm is made centrally on the rod. To what length the rod should be bored so that the total extension will increase 30% under the same tensile load if E = 2×10⁵ N/mm²?

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Q. A bar is subjected to a tensile load of 150kN. If the stress in the middle portion is limited to 160 N/mm², what will be the diameter of the middle portion of the total elongation of the bar is 0.25cm (E= 2 x 10⁵)?

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Q. A bar shown in the diagram below is subjected to load 160kN. If the stress in the middle portion Is limited to 150N/mm², what will be the length of the middle portion, if the total elongation of the bar is to be 0.2mm? Take E = 2.1 x 10⁵ N/mm².

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Q. The stress which acts in a direction perpendicular to the area is called ____________

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Q. Which of these are types of normal stresses?

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Q. In a body loaded under plane stress conditions, what is the number of independent stress components?

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Q. If a bar of large length when held vertically and subjected to a load at its lower end, its won-weight produces additional stress. The maximum stress will be ____________

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Q. Which type of stress does in a reinforcement bar is taken by the concrete?

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Q. A material has a Poisson’s ratio of 0.5. If uniform pressure of 300GPa is applied to that material, What will be the volumetric strain of it?

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Q. A diagram which shows the variations of the axial load for all sections of the pan of a beam is called ____________

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Q. The stress induced in a body, when subjected to two equal and opposite forces which are acting tangentially across the resisting section resulting the shearing of the body across its section is called ____________

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Q. What is the formula for shear stress?

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Q. Which of the following stresses are associated with the tightening of a nut on a bolt?

P. Crushing and shear stress in threads
Q. Bending stress due to the bending of bolt
R. Torsional shear stress due to frictional resistance between the nut and the bolt

Select the correct answer using the codes given below:

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Q. The transverse shear stress acting in a beam of rectangular cross-section, subjected to a transverse shear load, is ____________

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Q. A block 100mm x 100mm base and 10mm height. What will the direct shear stress in the element when a tangential force of 10kN is applied to the upper edge to a displacement 1mm relative to lower face?

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Q. A beam is said to be of uniform strength, if ____________

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