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Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, MAY 2019
Course Code: ME100
Course Name: BASICS OF MECHANICAL ENGINEERING

Max. Marks: 100 ‘Duration: 3 Hours
PART A
Answer any two questions, each carries 15 marks. Marks
1 9) _— State Zeroth law of thermodynamics. Explain its significance. (5)
b) Prove the equivalency of Kelvin Planck and Clausius statements. (5)
C) Write a short note on thermodynamic work. (5)
2 a) Compare intensive and extensive properties with examples. (5)

b) With the help of a neat diagram explain the working of a reaction steam turbine (10)
clearly showing the variation of steam pressure and velocity inside the turbine.
3 a) Compare an open cycle and closed cycle gas turbine. (5)

b) With the help of a neat diagram explain the working of 4 stroke cycle diesel (10)

engine.
PART >
Answer any two questions, each carries 15 marks.
4 a) Write a short note on the impact of refrigerants on environment. (5)
+ म 0) With neat sketches explain the working of window air conditioning system. (10)
ಭಾಷಾ ~ “सन ‏کے‎ യിലി. 8+9
5 8). Derive the expression for the ratio of belt tensions. (10)
b) Write a short note on the classification of gears. (5)
6 ஐ Explain various desirable properties of refrigerants. (4)
b) With a neat sketch explain the working of an internal expanding shoe brake. (6)
€) Write a short note on major components of automobiles. (5)
PART ೮
Answer any two questions, each carries20 marks.
7 a) With the help of a neat diagram explain the thermit welding process. (8)
b) Explain the extrusion process. Compare direct and indirect extrusion process. (6)
c) Write a short note on various casting defects. (6)
8 9) Explain powder metallurgy. Narrate various steps in powder metallurgy. (5)

b) With the help of a diagram mark the parts of a drilling machine. Explain any (8)
four operations performed on a drilling machine.
c) With neat sketches explain the up milling and down milling process. (7)

9 2) Explain different desirable properties of moulding sand. (4)

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