When the higher temperature is fixed, the COP of a refrigerating machine can be improved by

Refrigeration and Air conditioning Mcqs
BILAL KHATTAK0

A.Operating the machine at higher speeds
B.Operating the machine at lower speeds
C.Raising the higher temperature
D.Lowering the higher temperature
E.None of the above

Related Mcqs:

  1. When the lower temperature is fixed, the COP of a refrigerating machine can be improved by
  2. The efficiency of jet engine is higher at
  3. In calm air the air temperature is -10o C, if the wind speed should increase to 30 knots (with no change in air temperature) the thermometer would indicate __________?
  4. The efficiency of a jet engine is higher at
  5. Vertical centrifugal castings as compared to horizontal centrifugal castings are spun at
  6. Machine loading means
  7. In any practical refrigeration system the maintenance of low temperature and the discharge of this heat at
  8. The work ratio of closed cycle gas turbine plant with fixed top temperature of the cycle and fixed pressure ratio rp
  9. The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the __________.
  10. A machine that continuously creates its own energy is known as

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