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Reg. No. Name:

B4B024 Pages: 2

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FOURTH SEMESTER B.TECH DEGREE EXAMINATION, MAY 2017

Course Code: AU202
Course Name: ADVANCED THERMODYNAMICS (AU)

Max. Marks: 100 Duration: 3 Hours

PART A

Answer any three questions.

. Define the following with examples.

a) Intensive and extensive properties. (4)
b) Macroscopic and microscopic approach. (3)
c) Thermodynamic state, process and cycle. (3)
. a) Write down real gas equations. (3)
b) Derive ideal gas equation. (4)
c) Explain Joule- Thompson effect. (3)

1.5 kg of certain gas at a pressure of 8 bar and 20°C occupies a volume of 0.15 m’. It
expands adiabatically to a pressure of 0.9 bar and volume of 0.73 ர. Determine the
work done during the process, gas constant, ratio of specific heats, value of specific

heats, change in internal energy, and change in enthalpy. (10)

. A turbine operates under steady flow conditions, receiving steam at the following

state: Pressure 1.2 MPa, temperature 188°C, enthalpy 2785 kJ/kg, velocity 33.3 m/s
and elevation 3 m. The steam leaves the turbine at the following state: Pressure 20
kPa, enthalpy 2512 kJ/kg, velocity 100 m/s, and elevation 0 m. Heat is lost to the
surroundings at the rate of 0.29 kJ/s. If the rate of steam flow through the turbine 15

0.42 kg/s, what is the power output of the turbine in kW? (10)

PART B

Answer any three questions.

. a) State and explain the Carnot theorem. (6)

b) Which is the more effective way to increase the efficiency of a Carnot engine to

increase 11, keeping T2 constant or to decrease 12, keeping 11 constant? (4)

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