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Topic wise Paper Solution

Examination:
Que.No Question/Problem marks
Q 2 b )

Explain vapour compression refrigeration cycle on T-S and p-h charts..

8

Examination: 2017 SUMMER
Que.No Question/Problem marks
Q 1a)(d)

Define : i) Tonnage of refrigeration........

4

Q 3 e )

Explain the effect of superheating and subcooling on the performance of vapour compression cycle......

4

Q 4a)(d)

Name the refrigerants used for..

4

Q 6 b )

What is the necessity of purification of air ? How to remove oil, moisture and dust from air.......

4

Q 6 d )

Define : i) WBT ii) DPT.

4

Q 6 e )

Explain the working of simple vapour absorption refrigeration system...........

4

Examination: 2017 WINTER
Que.No Question/Problem marks
Q 4a)(c)

Draw a neat block diagram of “vapour compression cycle”.

4

Q 6 a )

Explain the following terms :- i) Daltons law of partial pressures

4

Q 6 b )

Sketch a psychrometric chart and show the following properties of air on it.....

4

Q 6 c )

Draw only a neat labelled sketch of window air-conditioner.

4

Examination: 2016 SUMMER
Que.No Question/Problem marks
Q 2 b )

Represent following processes on Psychrometric chart............

8

Q 3 c )

Enlist the four effects of subcooling on the performance of V.C.C. refrigeration cycle.

4

Q 5 a )

Explain with neat block diagram the working of ‘Vapour Absorbtion Cycle’.......

8

Q 6 a )

State the following term...

4

Q 6 d )

Compare between window air conditioner.............

4

Examination: 2016 WINTER
Que.No Question/Problem marks
Q 2 a )

Differentiate vapour compression and vapour absorption refrigeration system.........

8

Q 3 c )

Define i) Humidity ratio, ii) Specific humidity

4

Q 5 a )

Explain with neat sketch construction and working of ice plant.

8

Q 6 a )

What is the necessity of purification of air in compressor and how it is done ?

4

Q 6 c )

Define (i) Dew point temp. (ii) Wet bulb temp

4

Q 6 e )

Draw neat sketch of split air conditioner and name the parts.

4

Examination: 2015 SUMMER
Que.No Question/Problem marks
Q 2 c )

Explain vapour compression refrigeration........

8

Q 3 e )

Explain the concept of super heating and sub cooling with the help of P-h and T-s charts

4

Q 5 c )

Draw a neat sketch of vapour compression refrigeration cycle. Describe its working

8

Q 6 d )

Differentiate between heat pump and refrigerator.

4

Q 6 e )

Explain the working of window air conditioner with neat sketch.

4

Examination: 2015 WINTER
Que.No Question/Problem marks
Q 2 b )

Explain sensible heating and cooling with..

8

Q 3 c )

Draw and explain simple vapour absorption refrigeration system

4

Q 5 a )

Explain construction and working of ice plant with neat sketch.

8

Q 6 a )

Represent subcooling and superheating on P-h and T-S diagram....

4

Q 6 d )

Give classification of air conditioning system......

4

Examination: 2014 WINTER
Que.No Question/Problem marks
Q 2b)(i)

Define: 1) DPT

8

Q 2b)(ii)

Define following terms 1) specific humidity

8

Q 3 c )

List any four applications of refrigeration.

4

Q 5 a )

A vapour compression machine is used to maintain a temperature of –23°C in a refrigerated space. The ambient temperature is 37°C.....

8

Q 6 d )

Distinguish between central A/C and unitary A/C systems with respect to following parameters....

4