In free convection heat transfer, Nusselt number is function of

Heat and Mass Transfer
In free convection heat transfer, Nusselt number is function of

Prandtl number and Reynold number

Grashoff number and Prandtl number

Grashoff number, Prandtl number and Reynold number

Grashoff number and Reynold number

Prandtl number and Reynold number

Grashoff number and Prandtl number

Grashoff number, Prandtl number and Reynold number

Grashoff number and Reynold number

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Heat and Mass Transfer
According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

Absolute temperature

Fourth power of the absolute temperature

Cube of the absolute temperature

Square of the absolute temperature

Absolute temperature

Fourth power of the absolute temperature

Cube of the absolute temperature

Square of the absolute temperature

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Heat and Mass Transfer
The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as

None of these

Thermal conductivity

Thermal coefficient

Thermal resistance

None of these

Thermal conductivity

Thermal coefficient

Thermal resistance

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Heat and Mass Transfer
According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to

Absolute temperature

Fourth power of temperature

Square of temperature

Fourth power of absolute temperature

Absolute temperature

Fourth power of temperature

Square of temperature

Fourth power of absolute temperature

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Heat and Mass Transfer
Thermal conductivity of a material may be defined as the

Quantity of heat flowing in one second through one cm cube of material when opposite faces are maintained at a temperature difference of 1°C

Heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces

Quantity of heat flowing in one second through a slab of the material of area one cm square, thickness 1 cm when its faces differ in temperature by 1°C

All of these

Quantity of heat flowing in one second through one cm cube of material when opposite faces are maintained at a temperature difference of 1°C

Heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces

Quantity of heat flowing in one second through a slab of the material of area one cm square, thickness 1 cm when its faces differ in temperature by 1°C

All of these

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Heat and Mass Transfer
The value of the wavelength for maximum emissive power is given by

Fourier's law

Stefan's law

Planck's law

Wien’s law

Fourier's law

Stefan's law

Planck's law

Wien’s law

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Heat and Mass Transfer

Heat and Mass Transfer In free convection heat transfer, Nusselt number is function of

Heat and Mass Transfer According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as

Heat and Mass Transfer According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to

Heat and Mass Transfer Thermal conductivity of a material may be defined as the

Heat and Mass Transfer The value of the wavelength for maximum emissive power is given by

Heat and Mass Transfer
In free convection heat transfer, Nusselt number is function of

Heat and Mass Transfer
According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

Heat and Mass Transfer
The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as

Heat and Mass Transfer
According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to

Heat and Mass Transfer
Thermal conductivity of a material may be defined as the

Heat and Mass Transfer
The value of the wavelength for maximum emissive power is given by