Engineering :: Refrigeration and Air conditioning

@ : Home > Mechanical Engineering > Refrigeration and Air conditioning

141.

In which part of the vapour compression cycle there is abrupt change in pressure and temperature

A.	Solenoid valve	B.	Drier
C.	Expansion valve	D.	Evaporator
E.	The change is gradual throughout the cycle

142.

A water cooler is installed with one ton vapour compression cycle. In 24 hours it will provide

A.	0.1 ton of cold water	B.	Half ton of cold water
C.	One tonne of cold water	D.	More than one tonne of cold water

143.

A storage tank which receives liquid refrigerant from evaporator and prevents it from flowing into suction line is known as

144.

A plate of vane used to direct or control movement of fluid or air within the confined area is known as

A.	Baffle	B.	Bellows
C.	Regulator	D.	Diffuser

145.

Brazing is the process used for joining

A.	Two ferrous materials	B.	One ferrous and one non-ferrous material
C.	Two non-ferrous materials	D.	Two non-metals

146.

Which of the following refrigerant compressor is not classified as positive displacement compressor

A.	Reciprocating compressor	B.	Centrifugal compressor
C.	Rotary compressor	D.	Screw compressor

147.

A reversed Carnot cycle has a COP of 4. The ratio of higher temperature to lower temperature will be

A.	1.5	B.	2
C.	1.25	D.	2.5

148.

Brine is always used as a secondary refrigerant in

A.	Cold storage plant	B.	Milk chilling plant
C.	Cinema hall air conditioning plants	D.	Ice plant
E.	All of the above

149.

The ratio of high temperature to low temperature for reversed Carnot refrigerator is 1.25. The COP will be

A.	2	B.	3
C.	4	D.	5

150.

A Carnot refrigerator operates between 300.3 K and 273 K. The fraction of cooling effect required as work input is

A.	20%	B.	10%
C.	50%	D.	Not possible to find with the data