B B3B072S Pages: 3

Reg. No. Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION JULY 2017

ME 201: MECHANICS OF SOLIDS
(AU, MA, MP, ME, MT, PE, SF)

Maximum Marks: 100 Duration: 3 Hours

PART A Answer
any three questions.
1. a. Write two points each on linear strain and shear strain? (4)

b. Two plates of thickness 2 mm each are joined using a single rivet. The plates are
subjected to a tensile load of 314 N. If the material of the rivet is having allowable shear
strength of 100 MPa, determine the diameter of the rivet pin? (6)

2. A stepped bar is loaded as shown. Determine the total extension of the bar if Young’s

modulus is 200 GPa? (10)
90 ന്ന്‌ 50 ಗಾಗಾ” 80 ಗಾಗಾ”
| ‏ہے حاسه‎ | =
150 mm 200 mm 160 mm
3. a. Define Poisson’s ratio. (2)

b. An aluminum alloy plate of size 50 mm x 20 mm with thickness 5 mm is loaded as
shown. Find the change in thickness? What must be the load to be applied to have
the same change in thickness if load is applied only along thickness direction? Take
Young’s modulus as | x 10° MPa and Poisson’s ratio as 0.25

(8)
a. List four important assumptions in the theory of torsion. (4)

b. A shaft of 50 mm diameter is made of a material having allowable shear stress of 120
MPa. If the shaft is run at 300 rpm, what is the maximum power that can be

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