Important Questions

IMPORTANT QUESTIONS

BASIC THERMAL ENGINEERING

4TH SEM ME

1. Distinguish between an open and closed system.
2. Define a thermodynamic system and mention its different types.
3. What do you mean by property of a system? Distinguish extensive and intensive properties of a system.
4. Define the following terms.
5. a. System b. State c. Process d. cycle e. Property
6. Distinguish between mechanical and thermal equilibrium.
7. Define the following properties.
8. a. Pressureb. Volumec. Temperatured. Densitye. Specific volume
9. Define point function and path function.
10. Explain Zeroth law of thermodynamics.
11. Explain the first law of thermodynamics for a cyclic process.
12. Write Kelvin Planck and Clausius statements of second law of thermodynamics.
13. Derive an expression for General gas equation.
14. Derive an expression for Characteristic equation of a perfect gas.
15. Define specific heat at constant volume and at constant pressure.
16. Prove that the difference between two specific heats (Cp and Cv) is equal to characteristic gas constant, ‘R’.
17. What do you understand by a thermodynamic process? Distinguish between reversible and irreversible process.
18. Derive an expression for the work done, change in internal energy, change in enthalpy and heat supplied during isochoric process.
19. Derive an expression for the work done, change in internal energy, change in enthalpy and heat supplied during isobaric process.
20. Derive an expression for the work done, change in internal energy, change in enthalpy and heat supplied during isothermal process.
21. Derive an expression for the work done, change in internal energy, change in enthalpy and heat supplied during isentropic process.
22. What is a thermodynamic cycle? State clearly the assumptions made.
23. Derive an expression for air standard efficiency of Carnot cycle.
24. Derive an expression for air standard efficiency of Otto cycle.
25. Derive an expression for air standard efficiency of Diesel cycle.
26. Derive an expression for air standard efficiency of Dual combustion cycle.
27. Explain working of 4-stroke and 2-stroke diesel engines.
28. Explain the working of 4-stroke and 2-stroke petrol engine.
29. State Newton’s law of cooling, Stefan-Boltzmann law and Fourier’s law of heat conduction.
30. Explain heat transfer by slab and composite wall through conduction.
31. Explain open cycle and closed cycle gas turbine with diagram.
32. Explain closed cycle gas turbine with inter cooling and reheating with diagram.
33. Mention the differences between open cycle and closed cycle gas turbines.
34. Explain Ram-jet engine and turbo jet engines with neat sketches.
35. Explain Rocket engine with a neat sketch.