358) The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as

conduction

free convection

forced convection

radiation

Answer is:

free convection

constant pressure valve

constant temperature valve

constant superheat valve

none of these

Answer is:

remains constant

increases

decreases

none of these

Answer is:

domestic refrigerators

water coolers

room air conditioners

all of these

Answer is:

Explanation:

The capillary tube, as an expansion device, is used in
* domestic refrigerators
* water coolers
* room air conditioners

low weight per tonne of refrigeration

high heat transfer rate

low temperature at high altitudes

higher coefficient of performance

Answer is: