Strength of materials
Previous year question paper with solutions for Strength of materials May-2017
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Question paper 1
SECTION – A
Q1.Fill in the Blanks:-
a. Hoop stress in a thin cylindrical shell is ________
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Read moreb. Sudden load is __________ the gradual load.
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Read morec. The polar moment of area of a circular section of diameter d is ___________
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Read mored. At the neutral axis, bending stress is __________.
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Read moree. For the same area of cross –section, __________ is the most strongest of all section in bending.
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Read moref. Euler’s buckling load is ___________ .
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Read moreg. The torsional shear stress is _________ at the centre of shaft.
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Read moreh. The minimum load at which the column tends to buckle is called __________
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Read morei. The strength of a column depends upon the ___________ and its end conditions.
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Read morej. Close coil helical springs are used for ____________load only.
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Read moreState True / False: -
k. Longitudinal stress in a thin cylindrical shell is double the circumferential stress. ( True / False)
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l. Bending stress is maximum at the outermost fibres. ( True / False)
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m. Torque in a shaft is produced due to a couple acting on it. ( True / False)
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n. A live load is one which varies continuously. ( True / False)
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o. While testing a ductile material in tension necking start at upper yield points. ( True / False)
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SECTION – B
Q2. Attempt any SIX Questions.
i. Draw stress-strain curve for mild steel & explain in short
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Read moreii. Define strain energy, proof resilience & modules of resilience.
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Read moreiii. Classify beam with diagram & define point of contraflexure.
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Read moreiv. State the assumptions in the theory of simple bending.
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Read morev. Classify columns & state factors on which strength of column depends.
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Read morevi. State the function of springs & Name different types of springs..
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Read morevii. A solid shaft is to transmit a torque of 50K-N. If the shear stress is not exceed 56 N/mm2 .Find the minimum diameter of the shaft
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Read moreviii. Define moment of inertia, section modulus &radius of gyration
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Read moreSECTION – C
Q3. Attempt any TWO Questions.
1. A rigid bar is suspended from two wires of equal lengths 1.75m.One wire is 1mm in diameter and made of steel, other wire of 2mm in diameter is made of brass. A load of 100 N is placed on the rigid bar such that the bar remains horizontal. If the horizontal distance between wires is 200mm, Determine
i. Stresses developed in steel and brass wires.
ii. Distance of the load from the steel wires. Take Es= 2x105 N/mm2 & Eb = 1x105 N/mm2
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2. A cantilever 1.5 m long carries a u.d.l of 2kN/m over a length of 1.25 m from the free end. It also carries a point load of 3KN at a distance of 0.5 m from the free end. Draw the S.F & B.M diagrams for the given beam.
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Read more3. A closed coil helical springh whose spring index is 8, absorbs 50 N-m of energy when compressed for 50 mm. If the numbers of coil are 10, then calculate.
i. Diameter of springs
ii. Wire diameter N
iii. Maximum shear stress induced Take G=84 GPa
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