Refrigeration and air-conditioning objective questions and answers


41. Horse power per ton of refrigeration is expressed as.......


   A.4.75/COP

   B.COP/4.75

   C.4.75 x COP

   D.47.5/COP


✔ View Answer


A.4.75/COP

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42. The value of COP in vapour compressure cycle is usually.......


   A.Always less than unity

   B.Always greater than unity

   C.Equal to unity

   D.None of the above


✔ View Answer


B.Always greater than unity

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43. In refrigeration cycle,the flow of refrigerant is controlled by ....


   A.Condenser

   B.Compressor

   C.Evaporator

   D.Expansion valve

   D.None of the above


✔ View Answer


D.Expansion valve

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44. Where does the lowest temperature occures in vapour compression cycle?.......


   A.Condenser

   B.Compressor

   C.Evaporator

   D.Expansion valve

   D.None of the above


✔ View Answer


C.Evaporator

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45. Ammonia is a.......


   A.Non-toxic

   B.Non-inflammable

   C.Toxic and Non-inflammable

   D.Highly toxic and inflammable


✔ View Answer


B.Non-inflammable

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