Structural mechanics
Previous year question paper with solutions for Structural mechanics May-2018
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Question paper 1
SECTION-A
Q1. Fill in the blanks.
a. Cast iron is a _____ material.
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Read moreb. About 80% of the failures in mechanics parts are caused by _____.
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Read morec. If a material regains its original position on the removal of external forces, it is called a _____ material.
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Read mored. When a material can be drawn into wires, it is called _____ material.
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Read moree. Steel and rubber belong to elastic materials. (True/False)
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f. The strain has _____ units
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Read moreg. The ratio of lateral strain to linear strain is known as _____.
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Read moreh. Effect of tensile is to _____ the length of the body.
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Read morei. A beam encastered at both the ends is called _____.
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Read morej. Load acting at a point is known as _____.
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Read morek. A load which is spread uniformly over the entire or small portion of the beam is known as _____.
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Read morel. A beam which is fixed at one end and free at other end is known as _____.
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Read morem. Moment of Inertia of a circular section is ____
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Read moren. The unit of Moment of inertia is_____.
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Read moreo. Euler’s formula is applicable for _____.
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Read moreSECTION-B
Q2. Attempt any five questions.
i. Define the terms: Stress, Strain, Elasticity and Elastic limit
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Read moreii. State and explain Hooke’s law.
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Read moreiii. What are temperature stresses and strains?
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Read moreiv. Draw S.F and B.M diagram for a cantilever carrying a point load W at the free end
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Read morev. Define the terms: Moment of Inertia and Radius of gyration.
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Read morevi. What assumptions are made in Euler’s theory?
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Read morevii. Define and explain the following terms: Shear force, Bending moment and point of contra flexure.
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Read moreSECTION-C
Q3. Attempt any three questions.
a. A simply supported beam is carrying a udl of 2KN/m over a length of 3m from the right end. The length of the beam is 6m. Draw the S.F.D and B.M.D for the beam and also calculate the max. BM at the section.
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b. A column of timber section 150mm x 200mm is 6m long with both ends fixed. If the young’s modulus for timber is 17500 N/mm2 , determine (i) crippling load , (ii) safe load if FOS = 3
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c. For a material Young’s modulus is given as 1.2 x 105 N/mm2 and the Poisson’s ratio is 0.25. Calculate the Bulk modulus and Modulus of Rigidity.
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d. Find the MOI of I section of the following dimensions about X-X axis:
(i) Top flange= 200mm x 80 mm (ii) Bottom flange= 100mm x 40mm (iii) Central web= 280mm x 60mm (iv) Overall depth= 400mm
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