Download Previous year Diploma Paper of Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper

Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper

SECTION-A

Q1. Do as directed. 10×1.5=15

a. The continuous deformation of material under steady load is known as _____________ b. The change in unit volume of the body is called ____________ c. M.O.I. of a triangle about base of height h and base width, b will be _____. d. Unit of section modulus is _________________ e. Beam support _________ Loads. f. B.M. will be maximum, where S.F. is ____________ g. In a T-section, maximum shear stress will occur at ______________ h. The shear stress at the top of a rectangular section is ________________ i. The torque transmitted by a hollow shaft is _______ times more than the torque transmitted by a solid shaft. j. If the pitch distance between two turns is very small, then spring is called __________________

SECTION-B

Q2. Attempt any five questions. 5×6=30

i. Rivet hole 20mm diameter is punched in a steel plate 10mm thick. The shearing strength of the plate is 350N/mm2. Find the compressive stress in the punch at the time of punching. ii. Define the following: a) Compressive load b) Strain c) Modulus of rigidity. d) Poisson’s ratio. e) Volumetric strain. iii. What do you mean by point of contra flexure? iv. State assumption made in the theory of simple bending. v. What must be the length of a 5m diameter aluminum wire be so that it can be so twisted through one complete revolution without exceeding a shearing stress of 42 N/mm2. Let G=2.7X104 N/mm2. vi. Define the following. a) Slenderness ratio b) Buckling. vii. Find the safe compressive load on a hollow C.I. column, one end rigidly fixed and other hinged, of 150mm external diameter and 100mm internal diameter and 10m in length. Use Euler’s formula with F.O.S. of 5 and E= 95KN/mm2.

SECTION-C

Q3. Attempt any three questions. 3×10=30

a. A string 4 mm in diameter has original length 2 m. The string is pulled by a force of 200 N. If the final length of the spring is 2.02 m, determine: i) stress ii) strain iii) Young’s modulus b. State and prove parallel axis theorem and perpendicular axis theorem. c. A hollow shaft is to transmit is to 400 KW power at 90 r.p.m. If fs = 74 N/mm2 and internal diameter is 0.6 times the external diameter, then find both the diamers assuming the following relations Tmax= 1.35 Tmean. d. A laminated spring 600mm long is made up of plates each being 60mm wide and 8mm thick. Fing the number of plates required to enable the spring to carry a central point load of 4000N if the permissible bending stress is 120N/mm2. Also find deflection if E=200KN/mm2.

Strength of Material SOM 4th Sem/5309
/May 2019 Diploma Paper

Rivet hole 20mm diameter is punched in a steel plate 10mm thick. The shearing strength of the plate is 350N/mm2. Find the compressive stress in the punch at the time of punching.

A Length of a 5m diameter aluminum wire be so that it can be so twisted through one complete revolution without exceeding a shearing stress of 42 N/mm2. Let G=2.7X104 N/mm2. vi. Define the following. a) Slenderness ratio b) Buckling.

Calculate safe compressive load on a hollow C.I. column, one end rigidly fixed and other hinged, of 150mm external diameter and 100mm internal diameter and 10m in length. Use Euler’s formula with F.O.S. of 5 and E= 95KN/mm2.

Strength of Material SOM 4th Sem/5309/May 2019 Diploma Paper Click Here

Strength of Material SOM 4th Sem/5309
/May 2019 Diploma Paper

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String 4 mm in diameter has original length 2 m. The string is pulled by a force of 200 N. If the final length of the spring is 2.02 m, determine: i) stress ii) strain iii) Young’s modulus

Hollow shaft is to transmit is to 400 KW power at 90 r.p.m. If fs = 74 N/mm2 and internal diameter is 0.6 times the external diameter, then find both the diamers assuming the following relations Tmax= 1.35 Tmean.

Laminated spring 600mm long is made up of plates each being 60mm wide and 8mm thick. Fing the number of plates required to enable the spring to carry a central point load of 4000N if the permissible bending stress is 120N/mm2. Also find deflection if E=200KN/mm2.

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