A. m2/hr
B. m2/hr°C
C. kcal/m2 hr
D. kcal/m.hr°C
E. kcal/m2 hr°C
Heat Transfer
Heat Transfer
A. Equivalent thickness of film
B. Thermal conductivity Equivalent thickness of film Specific heat x Viscocity
C. Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity
D. Film coefficient x Inside diameter Thermalconductivity
E. none of the above
A. moisture
B. density
C. temperature
D. all of the above
E. none of the above
A. a dimensionless parameter
B. function of temperature
C. used as mathematical model
D. a physical property of the material
E. useful in case of heat transfer by radiation
A. high thickness of insulation
B. high vapour pressure
C. less thermal conductivity insulator
D. a vapour seal
E. all of the above
A. its temperature
B. nature of the body
C. kind and extent of its surface
D. all of the above
E. none of the above
A. aluminium
B. steel
C. brass
D. copper
E. lead
A. directly proportional to the surface area of the body
B. directly proportional to the temperature difference on the two faces of the body
C. dependent upon the material of the body
D. inversely proportional to the thickness of the body
E. all of the above
A. different heat contents
B. different specific heat
C. different atomic structure
D. different temperatures
E. none of the above
A. glass
B. water
C. plastic
D. rubber
E. air
