When the lower temperature of a refrigerating machine is fixed, then t – McqOptions

MCQOPTIONS

1.	When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by
A.	Operating the machine at higher speeds
B.	Operating the machine at lower speeds
C.	Raising the higher temperature
D.	Lowering the higher temperature
Answer» E.

Discussion

No Comment Found

Related MCQs

Latent heat of vaporization of a refrigerant ,at lower temperatures and pressures
An ideal refrigerant should have
The amount of heat absorbed by the system at low temperature is
Reversed carnot cycle comprises
Two Carnot Refrigerators are employed, one for ice making and other for comfort cooling
Carnot refrigerator absorbs heat at -13 C and requires 1 kW for each 6.5 kW of heat absorbed, the COP and temperature of heat rejections respectively
The dense air refrigeration system as compared to open air refrigeration system for same range of temperatures using Bell- Colemann cycle requires.
The air craft system giving Lowest Dry Air Rated Turbine discharge temperature at supersonic cruising speeds of the plane, is
For very high speed planes cruising at Mach number 2.5 and above, the air craft refrigeration system recommended is
There are two cooling turbines in