Online Mechanical Engineering Test - Heat Transfer, Refrigeration and Air Conditioning Test
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- Total number of questions: 20.
- Time allotted: 30 minutes.
- Each question carries 1 mark; there are no negative marks.
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Marks : 2/20
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Test Review : View answers and explanation for this test.
A refrigeration system
The condition of refrigerant after leaving the compressor and before entering the condenser is superheated vapour.
The automobile radiator is a heat exchanger of
In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in
Which of the following statement is correct for ammonia as a refrigerant?
The superheated vapour region, in a pressure enthalpy chart, is represented by the space
The specific humidity during heating and humidification process.
The index which corelates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as
The alignment circle is marked on the psychrometric chart at
The rato of energy transferred by convection to that by conduction is called
A thermostatic expansion valve in a refrigeration system
The space between the two walls of a thermos flask is evacuated because vacuum is a __________ conductor of heat.
In a vapour compression system, the condition of refrigerant before passing through the condenser is
The humidification process, on the psychrometric chart is shown by
A device used for transfering heat from one fluid to another is called heat exchanger.
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by
Most air cooled condensers are designed to operate with a temperature difference of
The wet bulb temperature at 100% relative humidity is __________ dry bulb temperature.
The dehumidification process, on the psychrometric chart, is shown by
A condenser is used in the __________ pressure side of a refrigerating system.
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