Reg No.:

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Sixth Semester B.Tech Degree Regular and Supplementary Examination July 2021

Course Code:ME316
Course Name: PRINCIPLES OF MACHINE DESIGN

Max. Marks: 100 Duration: 3 Hours
Use of approved data hand book is permitted
Assume any missing data
PART A
Answer any two full questions, each carries 15 marks. Marks
1 (a) Explain different phases in engineering design cycle. (8)
(b) What is endurance failure? Write different methods to determine endurance (7)
limit.
2 Find the diameter of a circular rod to be made up of 050 steel, subjected to an (15)
axial load of 20kN while transmitting 18kW at 1440rpm. Use common theories
of failure.
3 Calculate the thickness of a plate required to take an axial load varying (15)
between 12kN(T) and 10kN(C). The plate is having a hole of 40mm diameter
at it’s centre. The width of the plate is 100mm. The material of the plate is C40

steel
PART B
Answer any two full questions, each carries 15 marks.
4 Find the size of the two unequal parallel steel fillet welds required for the joint (15)

shown in figure. The load of 18kN is acting through the 0. ©. of the L — section

80mm
80mm

18kN

10mm
‏له سس سس ههه‎
60mm

bar

110൩൩

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