Pick up the wrong case. Heat flowing from one side to other depends directly on

Heat and Mass Transfer
Pick up the wrong case. Heat flowing from one side to other depends directly on

Time

Thickness

Face area

Temperature difference

Time

Thickness

Face area

Temperature difference

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

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 one cm cube of material when opposite faces are maintained at a temperature difference of 1°C

All of these

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

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 one cm cube of material when opposite faces are maintained at a temperature difference of 1°C

All of these

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

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

T5

Absolute temperature

T2

T

T5

Absolute temperature

T2

T

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Heat and Mass Transfer
If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called

Emissive power

None of these

Absorptive power

Emissivity

Emissive power

None of these

Absorptive power

Emissivity

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

Stefan’s law

Kirchhoff’s law

Planck’s law

Wine’s law

Stefan’s law

Kirchhoff’s law

Planck’s law

Wine’s law

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Heat and Mass Transfer
The rate of energy transferred by convection to that by conduction is called

Stanton number

Biot number

Nusselt number

Peclet number

Stanton number

Biot number

Nusselt number

Peclet number

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Heat and Mass Transfer

Heat and Mass Transfer Pick up the wrong case. Heat flowing from one side to other depends directly on

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

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

Heat and Mass Transfer If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called

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

Heat and Mass Transfer The rate of energy transferred by convection to that by conduction is called

Heat and Mass Transfer
Pick up the wrong case. Heat flowing from one side to other depends directly on

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

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

Heat and Mass Transfer
If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called

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

Heat and Mass Transfer
The rate of energy transferred by convection to that by conduction is called