Heat and Mass Transfer
Absorptivity of a body will be equal to its emissivity

When system is under thermal equilibrium
At one particular temperature
At critical temperature
At all temperatures

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
Film coefficient is defined as Inside diameter of tube

Film coefficient × Inside diameter Thermal conductivity
Equivalent thickness of film
Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity
Thermal conductivity Equivalent thickness of film Specific heat × Viscosity

ANSWER DOWNLOAD EXAMIANS APP