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Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

THIRD SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017
ME205: THERMODYNAMICS (AN, MA, ME, MP)

Max. Marks: 100 Duration: 3 Hours
PARTA
(Answer any THREE questions)
1. a) Explain thermodynamic equilibrium ⋅ (3) b)
What is quasi-static process? What is its characteristic feature? (3)

c) What is the concept of continuum? How will you define density and pressure using
this concept? (4)

2. Write short notes on

a) Different forms of energy. (3)
b) System, boundary and surroundings. (4)
c) Point and path functions. (3)

3. a) Define specific heat and derive it for constant pressure and constant volume. (4)

b) A turbo compressor delivers 2.33 m*/s at 0.276 MPa, 43°C which is heated at
this pressure to 430°C and finally expanded in a turbine which delivers 1860 kW.
During the expansion, there is a heat transfer of 0.09 147/6 to the surroundings.
Calculate the turbine exhaust temperature if changes in kinetic and potential energy are

negligible.
(6)
4. a) Calculate the internal energy and enthalpy of 1162 of air occupying 0.03m? at 3MPa.
(4) b)
Explain Joule’s experiment with neat sketches and state first law. (6)
PART B
(Answer any THREE questions)

5. a) State and prove Clausius' theorem (4)
b) A fluid undergoes a reversible adiabatic compression from 0.5MPa, 0.2m? 10
0.05m? according to the law, pv'? = constant. Determine the change in enthalpy,
internal energy and entropy, and the heat transfer and work transfer during the
process. (6)

6. a) Establish the Inequality of Clausius? (5) b)
Explain entropy principle and its applications? (5)

7. a) What is the critical state? Draw the phase equilibrium diagram on p-v coordinates for
a substance which shrinks in volume on melting. (4)

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