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Name of the College : Srinivasan Engineering College
University : Anna University
Department : Aeronautical Engineering
Degree : B.E
Subject Code/Name : AE2202 Aero Engineering Thermodynamics
Year : 2nd
Semester : 3rd
Document Type : Question Bank
Website : sriengg.com

Download Model/Sample Question Paper :
Part-A : https://www.pdfquestion.in/uploads/sr…/3208-AET1.pdf
Part-B : https://www.pdfquestion.in/uploads/sr…/3208-AET2.pdf

Aero Engineering Question Paper

Unit-I Basic Thermodynamics :

Part –A

Related : Srinivasan Engineering College AE2352 Experimental Stress Analysis B.E Question Bank : www.pdfquestion.in/3206.html

1) What is system and surrounding? :
System- it is a quantity of matter or region in space upon which the attention is concentrated in the analysis of a problem. Surrounding -Everything external to the system is the surrounding.

2) Distinguish between Open and Closed system :
Closed system – system of fixed mass. No mass transfer, only energy transfer
Open system – System in which the mass crosses the boundary of the system.
Both mass and energy transfer occurs.

3) Define an isolated system :
No interaction between the system and the surrounding

4) Define quasi static process? :
When a process proceeds in such a manner that the system remains infinitesimally
close to an equilibrium state, at all times is called as quasi static equilibrium.

5) Differentiate Extensive and intensive properties? :
Intensive properties – Independent of the mass of the system eg, temperature
Extensive properties – Depends on the mass of the system.

6) State Zeroth Law? :
When a body A is in thermal equilibrium with body B and separately with body
C, then the bodies B and C will be in thermal equilibrium.

7) State First law of Thermodynamics? :
Energy can neither be created nor be destroyed during the process but it can be transferred from one form to another form.

8) Write the two statements of the Second law of thermodynamics :
a. Kelvin Plank’s statements of Thermodynamics
b. Clausius statement

9) State Kelvin Plank’s statements of Thermodynamics :
It is impossible for any device that operates on a cycle to receive the heat from the single reservoir and produce a net amount of work.

10) State Clausius statements of Thermodynamics :
It is impossible to construct a device that operated in a cycle and produces no effect other than the transfer of heat from the lower temperature body to a higher temperature body.

Part – B

1) one kg of gas expands at CO&11stant pressure from 0.085 m3 to 0.13m3.if the initial temperature of the gas is 22.5 °c. Find the final. Temperatures, net heat transfer, change in internal energy, pressure of gas.
2) A certain quantity of gas is head at constant pressure from 35 °0 to 185°c. Estimate the amount of hem transferred, ideal work done, change in internal energy, when the initial volume of the gas is 0.6 .

3) 2kg of gas at a pressure of 1.5 bar. Occupies a volume of 2.5 m3. If this gas compresses isothermally to 1/3 times the initial volume. Find initial. Final temperature, work done, heat transfer.

4) one kg of air is compressed polytropically (n=1.3) from 1 bar and 27 deg Celsius to 3 bar. Find I. work transfer, 2.Heat transfer, 3. Change in internal energy.
5) Explain in detail the second law of thermodynamics

Part – C

1. What is internal energy of the system? What is internal energy of a (1) real gas and (2) perfect gas?

2. No heat is taken in or given out of a gas in an adiabatic expansion of the gas. Does the internal energy of the gas change during this process? Does the gas do any work in this process?

3. A liquid is being converted in vapour at its melting point. What will be the specific heat of the liquid at this time?
4. Will the internal energy of an ideal gas change in an isothermal process?
5. On removing the value the air escaping from a cycle tube becomes cool. Why?

6. We have two samples of a gas, each having a volume V at temperature T. One is compressed isothermally and other adiabatically till their volumes reduces to V/4. In which process will the temperature be more?

7. Is it possible to add heat to a system without changing its temperature?
8. Why specific heat at constant pressure (Cp) for a gas is greater than its specific heat at constant volume (Cv)?

9. Why is expansion of water called anomalous?
10. “The ga s expands quasi -sta tic”. Wha t do mean by i t?
11. What is an indicator diagram?

12. Name the important role-played by an indicator diagram.
13. Define triple point.
14. Wha t is carnot’s cycle?
15. Wha t is carnot’s principle?

16. Are dull black surfaces bad radiators?
17. Enumerate three factors upon which the amount of heat radiated per second by a surface depends.

18. Wha t is direc t outcome of Kirchoff’s law?
19. Define the first law and the second law of thermodynamics. Explain carefully the significance of both of them.

20. A solid sphere of copper of radius R and a hollow sphere of the same material of inner radius r and outer radius R are heated to the same temperature and allowed to cool in the same environment. Which of them starts cooling faster?