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8480026

What is Clausius Clapeyron Equation?
State Tds equations.
What you meant by Gibb’s free energy?
Derive Helmholtz free energy equation.
What are the applications of thermodynamic relations?
PART C
Answer any four full questions. Each question carries 10 marks.

Calculate the specific enthalpy, specific volume and density of 1 kg of steam at a
pressure of 1.9MPa, having a dryness fraction 0.85.
What you meant by PVT surface? Explain with neat sketch.
Using steam tables, determine the mean specific heat for superheated steam at
1 Bar between temperatures of 150°C to 200°C.
What you meant by pure substance?
What you meant by saturated vapour and super-heated vapour?
What is saturation temperature and saturation pressure?
Write short notes on Mollier diagram.
Define latent heat of vaporizations.
In an ideal Brayton cycle, air is compressed from 1 bar to a pressure ratio of 6.
Calculate the cycle efficiency? If the ratio of lower to upper temperature is 0.3 then
calculate the work ratio?
Derive the thermal efficiency of Atkinson cycle.
Draw PV diagram and TS diagram of Rankine cycle?
A steam power plant has a boiler and condenser pressure of 60 bar and 0.1 bar
respectively. Steam coming out of the boiler is dry and saturated. The plant operates
on the Rankine cycle. Calculate thermal efficiency.
In an ideal Atkinson cycle, the gas is compressed isentropically from 1 bar, 27°C
to 4 bar. The maximum pressure of the cycle is limited to 16 bar. Calculate

i) The work done per kg of cycle

ii) The thermal efficiency of the cycle

111) Mean effective pressure of the cycle

Take Cp= 0.761kJ/kgK and Cv= 0.573 kJ/kgK

oho RR

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