Refrigeration and air-conditioning objective questions and answers

   B.Reversed joule cycle

   C.Reversed Brayton cycle

   D.Reversed Otto cycle

17. The relative coefficient of performance ( C.O.P.)is equal to.......

   A.Theoritical C.O.P./Actual C.O.P.

   B.Actual C.O.P./Theoritical C.O.P.

   C.Theoritical C.O.P. x Actual C.O.P.

   D.None of the above

18. The sub-cooling in a refrigeration cycle ....

   A.Does not alter C.O.P.

   B.Increases C.O.P.

   C.Decreases C.O.P.

   C.None of the above

19. The highest temperature during the cycle,in a vapour compression system,occures after .......

   A.Compression

   B.Condensation

   C.Expansion

   C.Evaporation

20. In a vapour compression system,the lowest temperature during the cycle occures after.......

   A.Compression

   B.Condensation

   C.Expansion

   C.Evaporation