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10018
Reg. No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, JULY 2016

ME100 BASICS OF MECHANICAL ENGINEERING

Max. Marks: 100 Duration: 3 Hours
PARTA

Answer ALL questions. Each question carries 3 marks

“Entropy of the universe is increasing”. Comment.

Write any three differences between fire tube and water tube boilers?
Differentiate between comfort and industrial air conditioning.

Bring out the concept of hybrid vehicles.

Give examples of three alloys and state their applications.
Differentiate between soldering and brazing.

List the applications of milling machine.

List any six machining operations that are performed on a lathe.

‎S ONE‏ ون كن بح مم

‎PART B

‎Answer any 8 Questions (2 QUESTIONS FROM EACH MODULE)
Each question carries 6 marks

‎MODULE I

‎9. State the first law of thermodynamics for a process and cycle. Bring out the
limitations

‎10. Sketch a Brayton cycle and explain.

‎11. A Carnot cycle works with adiabatic compression ratio of 5 and isothermal
expansion ratio 2. The volume of air at the beginning of isothermal expansion
is 0.3 m3. If the maximum temperature and pressure is limited to 550 K and
21 bar, determine (a) minimum temperature in the cycle, (b) thermal
efficiency of the cycle, (c) pressure at all salient points. Take y = 1.4.

‎MODULE II
12. Differentiate between fan, blowers and compressors.
13. Discuss the working of a four stroke SI engine.
14. With a neat sketch explain the working of centrifugal pump.

‎MODULE III
15. Explain the working of vapour compression refrigeration system.

‎1

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