WorksheetsBasic Refrigeration Cycle
Total questions: 8
Worksheet time: 2mins
A jet fighter travelling at 950 km/h needs a cooling system of capacity..
2 to 4 TR
4 to 8 TR
8 to 10 TR
10 to 20 TR
During a refrigeration cycle, heat is rejected by the refrigerants in a ...
compressor
condenser
evaporator
expansion valve
In a vapour compression refrigeration system, subcooling the liquid refrigerant is to...................coefficient of performance.
increase
decrease
both
none
In a vapour compression refrigeration system, the lowest temperature during the cycle occurs after...
compression
condensation
expansion
evaporation
In aqua-ammonia absorption refrigeration system, incomplete rectification lead to accumulation of water in
condenser
evaporator
absorber
none
The refrigerant R-717 is
air
water
ammonia
carbon dioxide
Environment protection agencies have advise aganist the use of chloro-fluoro-carbon (CFC) refrigerants since
these react with water and cause acid rain
these react with plants and cause green house effect
these react with oxygen and cause its depletion
these react with ozone layer
The compression device used in a steam jet refrigeration system is a
vapour compressor
steam ejector
diffuser
liquid pump
