Refrigeration and air-conditioning objective questions and answers

11. The co-efficient of performence is always.......one

   A.Equal to

   B.less than

   C.Greater than

   D.None of the above

12. In ammonia-hydrogen refrigerator,.......

   A.Ammonia is absorbed in hydrogen

   B.Ammonia is absorbed in water

   C.Ammonia is evaporets in hydrogen

   D.Ammonia is evaporets in ammonia

13. For summer air conditioning,the relative humidity should not be less than....

   A.40%

   B.60%

   C.75%

   C.90%

14. For winter air conditioning,the relative humidity should not be more than.......

   A.40%

   B.60%

   C.75%

   C.90%

15. The sensible heat factor for auditoriam or cinema hall is generally kept as.......

   A.0.6

   B.0.7

   C.0.8

   D.0.9

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