HEAT AND MASS TRANSFER QUIZ

All of these

Directly proportional to the temperature difference on the two faces of the body

Directly proportional to the surface area of the body

Dependent upon the material of the body

None of these

In case of Newtonian fluids

In heat exchanger design as a safety factor

When a liquid exchanges heat with a gas

Black body

Grey body

White body

Opaque body

Black radiation

All of these

Total radiation

Full radiation

Transmitted

Absorbed

Refracted

Reflected

May increase or decrease depending upon temperature

Decreases

Remain same

Increases

P = 0, x= 1, and a = 0

X = 0, a + p = 1

P = 0, x = 0 and a = 1

P=1, x = 0, and a = 0

Absorbs heat radiations of all wave lengths falling on it

Reflects all heat

Transmits all heat radiations

Is black in colour

Radiation

Conduction

Convection

Scattering

Film coefficient × Inside diameter Thermal conductivity

Thermal conductivity Equivalent thickness of film Specific heat × Viscosity

Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity

Equivalent thickness of film