Heat and Mass Transfer Emissivity of a white polished body in comparison to a black body is Higher Same Depends upon the shape of body Lower Higher Same Depends upon the shape of body Lower ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on Coefficient of viscosity All of these Gravitational force Density Coefficient of viscosity All of these Gravitational force Density ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thermal diffusivities for gases are generally More than those for solids Dependent on the viscosity More than those for liquids Less than those for liquids More than those for solids Dependent on the viscosity More than those for liquids Less than those for liquids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fouling factor is used When a liquid exchanges heat with a gas In heat exchanger design as a safety factor In case of Newtonian fluids None of these When a liquid exchanges heat with a gas In heat exchanger design as a safety factor In case of Newtonian fluids None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles caused by some mechanical means, is known as Free convection Radiation Conduction Forced convection Free convection Radiation Conduction Forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wave length for maximum emissive power is given by Planck’s law Wine’s law Stefan’s law Kirchhoff’s law Planck’s law Wine’s law Stefan’s law Kirchhoff’s law ANSWER DOWNLOAD EXAMIANS APP
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