(APJ Abdul Kalam Technological University) ktu b.tech question paper for Basic Mechanical Engineering Ist Series Examination..
FIRST SEMESTER B-TECH DEGREE INTERNAL EXAMINATION
SERIES TEST I – SEPTEMBER 2015
ME 101-04 BASIC MECHANICAL ENGINEERING
Time : 1 hour Max.Marks:20
1.Define a thermodynamic system. Differentiate between open system, closed system and an isolated system. (3 marks)
2.What is a Quasi-static process? (1 mark)
3.Express first law of thermodynamics in mathematical form for a
c)isolated system (1.5 marks)
4.In an air motor cylinder compressed air has an internal energy of 450 kj/kg at the beginning of the expansion and an internal energy of 220 kj/kg after expansion. if the work done by the air during the expansion is 120 kj/kg. Calculate the heat flow from the cylinder.
5.State the limitation of first law of thermodynamics. (1 mark)
6.Derive the relation Cp – Cv = R (3marks)
7.Give the following statements of second law of thermodynamics.
a) Clausius statement
b)Kelvin-Planck statement (2 marks)
8.Is the following engine possible? if not, why? (1.5 marks)
9.Explain the concept of available energy. When does the system become dead? (2 marks)
10.What do you mean by the term entropy? Prove that entropy is a property of a system? (3marks)