10

11
12

13

14

(b)

(a)
(b)

(a)
(b)

a)
b)
a)

b)

G1201 Pages: 2

refrigerator.

Explain the working of Claude refrigerator. Derive an expression for COP assuming
that the expander work is utilized to compressor the gas.

With a neat sketch and T-S diagram, explain working of Philips refrigerator.

Explain the working of a dilution refrigerator with neat schematic.

PART (^
Answer any four full questions, each carries 10 marks.

What is vapour shielding in cryogenic vessels?

Write short notes on insulations used in cryogenic applications.

With neat sketches explain the functions of the different components of a typical
Dewar vessel.

Explain the various features of cryogenic fluid transport system.

Explain any one pressure measurement system used in cryogenic applications.

Write a short note on liquid level gauges.

Discuss the instrumentation systems used in cryogenic applications.

With neat sketch explain any three types of heat exchangers used in cryogenic systems.

Illustrate the working of constant volume gas thermometer?

Page 2of 2

(6)

(5)
(5)

(4)
(6)
(10)

(10)
(5)
(5)
(5)
(5)
(10)