Question: A perfect black body is one which
Options
A : is black in colour
B : absorbs heat radiations of all wave lengths falling on it
C : reflects all the heat radiations
D : transmits the heat radiations
Heat Transfer, Refrigeration and Air Conditioning - Part 1 more questions
An electrolux refrigerator is called a __________ absorption system.
The heat transfer by radiation __________ a medium.
Thermal conductivity of water __________ with rise in temperature.
During adiabatic saturation process on unsaturated air __________ remains constant.
The thickness of thermal and hydrodynamic boundary layer is equal....
Degree of saturation or percentage humidity is
The coefficient of performance of Heat Pump is always __________....
During a refrigeration cycle, heat is rejected by the refrigerant....
The subcooling in a refrigeration cycle
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