AN010805G03 Cryogenics B.Tech Model Question Paper : mgu.ac.in

Name of the College : Mahatma gandhi University
Department : Aeronautical Engineering
Subject Code/Name : AN 010 805 G03/Cryogenics
Sem : VIII
Website : mgu.ac.in
Document Type : Model Question Paper

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/mgu.ac.in/4968-Elective-IV%20Cryogenics.pdf

MGU Cryogenics Question Paper

B.TECH.DEGREE EXAMINATION :
Eighth Semester
Branch: Aeronautical Engineering

Related : Mahatma gandhi University AN010801 Rockets & Missiles B.Tech Model Question Paper : www.pdfquestion.in/4969.html

Cryogenics : (AN 010 805 G03)
Time: 3 hours
maximum: 100 marks

Part A

Answer all questions :
Each question carries three marks
1. Explain any one application of cryogenics
2. Discuss the mechanical properties of materials at cryogenic temperatures.
3. Define the term Gas liquefaction.
4. Write short note on adiabatic demagnetization
5. What is Cryo pumping
(3×5 = 15 Marks)

Part B

Answer all questions :
Each question carries five marks
6. What are the applications of Superconductivity.
7. Differentiate superconductivity and superfluidity
8. Explain the difference between ortho-hydrogen and para-hydrogen.
9. What do you mean by magnetic refrigeration system.
10. Explain cryogenic insulation and its types.
(5×5 = 25 Marks)

Part C

Answer all questions :
Each question carries 12 marks
11. Explain the term cryogenics and its development in the field of space technology.
OR
12. Discuss the applications of cryogenics in biology and medicine.

13. What are the properties of the following cryogenic fluids
(i) Hydrogen (ii) Helium 3 (iii) Helium 4
OR

14. (i) What are the electrical and magnetic properties of cryogenic materials
(ii) Determine the thermal conductivity of air at 250K (450 ° R) and 101.3kpa (14.7psia) if the mean free path of air at this condition is 49 nm (1.93× 10-6 in.) ,the gas constant for air is 287 J/kg-K ,the specific heat ratio is 1:40 , and the specific heat at constant volume is 716.5 J/kg-K (0.174 Btu/lbm-°R).

15. Explain the production of low temperatures using Joule-Thomson effect.
OR
16. Explain about the working of a precooled Linde-Hampson system with suitable diagram for neon and hydrogen.

17. With the help of schematic and T-S diagram, explain Philips Refrigerator. Also explain briefly the importance of refrigerator effectiveness.
OR
18. Explain about the refrigeration system working on adiabatic demagnetization method.

19. Briefly explain about the basic design parameters of cryogenic fluid storage vessels.
OR
20. Briefly explain about the cryogenic fluid transfer system.
(12x 5 = 60Marks)

B.Tech.Degree Examination :
Eighth Semester
Branch : Aeronautical Engineering
Time : 3 hours
maximum : 100 marks
Industrial Aerodynamics (AN 010 804 L04)

Part A :
Answer all questions. Each question carries three marks
1. What are the different types of winds?
2. Define the term power coefficient.
3. Discuss the importance of aerodynamics in the automobiles.
4. Explain the effects of aerodynamics on the buildings.
5. Define the term flutter. (3×5 = 15 Marks)

Part B :
Answer all questions. Each question carries five marks
6. Briefly explain the atmospheric boundary layer structure with a neat sketch.
7. What is meant by wind energy collector and mention its types.
8. What are the effects of cut back angle in vehicle aerodynamics?

9. What are the steps involved in designing a building to avoid the damages from the environmental winds.
10. Explain briefly vortex – induced vibration. (5×5 = 25 Marks)

Part C :
Answer all questions. Each question carries 12 marks
11. Explain in detail about the atmospheric boundary layer characteristics. OR
12. What are the effects of terrain on wind characteristics?

13. Derive an expression for Betz coefficient by momentum theory. OR
14. Explain in detail about horizontal and vertical axis machines and its types.

15. Discuss about the power requirements and drag coefficients in Automobiles OR
16. Compare the aerodynamics of train and hovercraft.

17. Discuss the pressure distribution of low rise buildings. OR
18. What are the significance of ventilation in the design of buildings and discuss the special problems of tall buildings.

19. What are the effects of Reynold’s number on wake formation of bluff shapes?
20. Explain the following terms
(a) Galloping.
(b) Stall flutter.

Rockets & Missiles Question Paper :
Part A :
Answer all questions :
1. Explain MHD?
2. What is aerodynamic centre. Distinguish it from centre of pressure?
3. What is the maximum altitude attained in a rocket? How can this altitude increase?

4. Write a short note on different types of chemical rockets.
5. What are the different materials used in rockets? What are its special requirements?
(3×5 = 15 Marks)