Exam Details
| Subject | Engineering Thermodynamics | |
| Paper | ||
| Exam / Course | B.Tech. Civil (Construction Management) / (Water Resources Engineering)/ (Aero Space Engineering) BTCM-BTWRE | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3
IET-201(B)I
B.Tech. Civil (Construction Management) I
B.Tech. Civil (Water Resources Engineering) I
B.Tech. (Aerospace Engineering)
Term-End Examination
00143
December, 2016
ET-201(B) ENGINEERING THERMODYNAMICS
Time: 3 hours Maximum Marks: 70
Note: Answer any seven questions. All questions carry equal marks. Use of steam tables and scientific calculator is permitted.
1. Define the following: 5x2=10
Internal Energy
Triple Point of Water
Entropy
Availability
Pure Substance
2. A fluid system undergoes a non-flow frictionless process following the pressure volume relation as
P 1.5 ,where P is in bar and V is in m^3.
During the process the volume changes from 0.15 m^3 to 0.05 m^3 and the system rejects 45 kJ of heat. Determine: 10
Change in internal energy
Change in enthalpy
3. What is Clausius-Clapeyron equation and how is it useful Derive it, clearly mentioning the terms used in it. 10
4. Determine the following when a gas obeys the Van der Waal's equation,
10
Change in internal energy
Change in enthalpy
5. A reversible heat pump is used to maintain a temperature of 0°C in a refrigerator when it rejects the heat to the surroundings at 25°C. If the heat removal rate from the refrigerator is 1440 kJ/minute, determine the C.O.P. of the machine and the work input required.
If the required input to run the pump is developed by a reversible engine which receives heat at 380°C and rejects heat to the atmosphere, then determine the overall C.O.P. of the system. 10
6. Show that the compression ratio for the maximum work to be done per kg of air in an Otto cycle between upper and lower limits of absolute temperatures T3 and T1 is given by
7. Discuss the effect of pressure ratio, turbine inlet temperature and compressor inlet temperature on the efficiency of a gas turbine, with suitable sketches. 10
8. Explain, in detail, the principle and working of a vapour absorption refrigeration system. 10
9. Explain the following with respect to a liquid fuel: 4x2 10
Viscosity
Specific Heat
Calorific Value
Flash Point
10. Derive the Maxwell thermodynamic relations for a closed system undergoing a reversible process. 10
IET-201(B)I
B.Tech. Civil (Construction Management) I
B.Tech. Civil (Water Resources Engineering) I
B.Tech. (Aerospace Engineering)
Term-End Examination
00143
December, 2016
ET-201(B) ENGINEERING THERMODYNAMICS
Time: 3 hours Maximum Marks: 70
Note: Answer any seven questions. All questions carry equal marks. Use of steam tables and scientific calculator is permitted.
1. Define the following: 5x2=10
Internal Energy
Triple Point of Water
Entropy
Availability
Pure Substance
2. A fluid system undergoes a non-flow frictionless process following the pressure volume relation as
P 1.5 ,where P is in bar and V is in m^3.
During the process the volume changes from 0.15 m^3 to 0.05 m^3 and the system rejects 45 kJ of heat. Determine: 10
Change in internal energy
Change in enthalpy
3. What is Clausius-Clapeyron equation and how is it useful Derive it, clearly mentioning the terms used in it. 10
4. Determine the following when a gas obeys the Van der Waal's equation,
10
Change in internal energy
Change in enthalpy
5. A reversible heat pump is used to maintain a temperature of 0°C in a refrigerator when it rejects the heat to the surroundings at 25°C. If the heat removal rate from the refrigerator is 1440 kJ/minute, determine the C.O.P. of the machine and the work input required.
If the required input to run the pump is developed by a reversible engine which receives heat at 380°C and rejects heat to the atmosphere, then determine the overall C.O.P. of the system. 10
6. Show that the compression ratio for the maximum work to be done per kg of air in an Otto cycle between upper and lower limits of absolute temperatures T3 and T1 is given by
7. Discuss the effect of pressure ratio, turbine inlet temperature and compressor inlet temperature on the efficiency of a gas turbine, with suitable sketches. 10
8. Explain, in detail, the principle and working of a vapour absorption refrigeration system. 10
9. Explain the following with respect to a liquid fuel: 4x2 10
Viscosity
Specific Heat
Calorific Value
Flash Point
10. Derive the Maxwell thermodynamic relations for a closed system undergoing a reversible process. 10
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