Previous Year Very Short Questions of RAC (DIPLOMA mechanical engineering 5th)

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Refrigeration and air conditioning

Previous year question paper with solutions for Refrigeration and air conditioning

Our website provides solved previous year question paper for Refrigeration and air conditioning . Doing preparation from the previous year question paper helps you to get good marks in exams. From our RAC question paper bank, students can download solved previous year question paper. The solutions to these previous year question paper are very easy to understand.

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  1. The ________compressors are generally used for refrigeration which require large displacement and low condensing pressure.(centrifugal/reciprocating)
  2. In a forced draft cooling tower, the fan is mounted near the _______.(top/bottom)
  3. For a fixed condensing temperature, the heat rejection ratio increases with ________in suction temperature.(decrease/increase)
  4. Float valves are used in ________ evaporators.(flooded/dry expansion)
  5. The air at inlet of a fan is _________ atmospheric pressure.(below/above)
  6. _________ is an air flow measuring instrument.(Anemometer/Hygrometer)
  7. Bucket pump is a________ speed pump.(low/high)
  8. The Heat Rejection Factor (HRF) is given by ________. (1+1/COP or 1-1/COP)
  9. The thermostatic expansion valve is also known as constant________ valve.(temperature/superheat)
  10. Tower approach is the temperature difference between the temperature of the water________ the tower and WBT of entering air.(entering/leaving)
  11. As warm air cools, its relative humidity ……………….
  12. ……………..is the temperature of air measured by an ordinary thermometer.
  13. ……………….is the heart of refrigeration.
  14. The device used for controlling the flow of refrigerant in the system is called……………….
  15. An Electrolux refrigerant is also called a ………..fluid system.
  16. The bell coleman cycle is also called…………..cycle
  17. The COP of air refrigeration is ………………
  18. When the suction pressure decreases, the COP of system…………..
  19. The ratio of actual COP to theoretical COP is called ……………………
  20. In SI unit, one ton of refrigeration means……………….kj/min.