Thermodynamics

State the scope of thermodynamics in thermal engineering.

Differentiate between macroscopic and microscopic approaches. Which approach is used in the study of engineering thermodynamics.

Or 

Explain the macroscopic and microscopic point of view.

A mass of 1.5kg of air is compressed in a quasi static process from 0.1Mpa to 0.7Mpa for which PV = constant. The initial density of air is 1.16kg/m³. Find the work done by the piston to compress the air.

A flow of water at some velocity out of a nozzle is used to wash a car. The water then falls to the ground. What happens to the water state in terms of V, T and s? 

Discuss the applications of thermodynamics in the field of energy technology.

A closed metallic boiler drum of capacity 0.24m³ contain steam at a pressure of 11bar and a temperature of 200ºC. Calculate the quantity of steam in the vessel. At what pressure in the vessel will the steam be dry and saturated if the vessel is cooled?

How can you change s of a substance going through a reversible process?

Manometer measure the pressure of a tank as 250 cm of Hg. For the density of Hg 13.6 × 10³ Kg/m³ and atmospheric pressure 101 KPa, calculate the tank pressure in MPa.

Define N.T.P. AND S.T.P.

When is the reversible work the same as the isentropic work?