STUPIDSID
1(a)
What is Cryogenics? Mention the few areas involving cryogenic enginnering.
6 M
1(b)
Discuss the effects of low tempreature on the following properties of engineering materials:
i) Yield strength
ii) Thermal conductivity.
i) Yield strength
ii) Thermal conductivity.
6 M
1(c)
Explain thermo dynamically ideal gas liquidification system with sketch and obtain an expression for the work requirement.
8 M
2(a)
With a neat sketch and T - S diagram, explain Linde dual pressure system for the liquification of air and write the expression for liquid yield and work requirement per unit mass of air compressed.
10 M
2(b)
Explain the working of Simon - Helium liquification system with a neat sketch and represent the processes on T-S diagram.
10 M
3(a)
How the cryo coolers are classified? Explain strilling cycle cryo refrigerator, with neat sketch and write the cop for same.
10 M
3(b)
Explain with neat sketch and T - S diagram the working of Solvay cycle refrigerator.
10 M
4(a)
With a neat sketch, expaln Linde single column gas separation system.
10 M
4(b)
What are the gas purification methods? Explain with neat sketch, adsorption purifier along with refrigeration purifier.
10 M
5(a)
Explain H3e - H 4e dilution refrigerator, with the sketch indicating all the parts.
10 M
5(b)
Sketch and explain the following:
i) Constant volume gas thermometer
ii) Electrical resistance liquid level gauge.
i) Constant volume gas thermometer
ii) Electrical resistance liquid level gauge.
10 M
6(a)
How the degrees of vaccum is specified?
4 M
6(b)
With a neat sketch, explain the working of mechanical vaccum pump.
8 M
6(c)
Explain any four types of insulation that can be used in cryogenic equipment.
8 M
7(a)
With a neat sketch, explain various elements of dewor vessel for storage of cryogenic fluid.
8 M
7(b)
Write a note on suspension systems adopted in cryogenic engineering.
6 M
7(c)
What are the system adopted to transfer the cryogenic fluid? Explain any two.
6 M
8
Write short notes on the application of cryogenic system on: a) Space technology.
b) Super conducting devices.
c) Instant quick freezing technique.
d) Food preservation.
b) Super conducting devices.
c) Instant quick freezing technique.
d) Food preservation.
20 M
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