A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is

Heat Transfer
A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is

125

150

133

160

125

150

133

160

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Heat Transfer
Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?

Catchall

Vent

Bleed point

None of the listed here

Catchall

Vent

Bleed point

None of the listed here

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Heat Transfer
Planck's distribution law is valid for __________ bodies

black

coloured

all of the listed here

white

black

coloured

all of the listed here

white

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Heat Transfer
In a shell and tube heat exchanger,

The relationship is not generalised

The temperature drop is inversely proportional to the resistance across which the drop occurs

There is no relationship between temperature drop and resistance

The temperature drops in the two fluids and the wall are proportional to individual resistances

The relationship is not generalised

The temperature drop is inversely proportional to the resistance across which the drop occurs

There is no relationship between temperature drop and resistance

The temperature drops in the two fluids and the wall are proportional to individual resistances

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Heat Transfer
A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.

Stantan

Condensation

Grashoff

Brinkman

Stantan

Condensation

Grashoff

Brinkman

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Heat Transfer
Peclet number (Pe) is given by

Pe = Pr/Re

Pe = Re/Pr

Pe = Nu.Re

Pe = Re.Pr

Pe = Pr/Re

Pe = Re/Pr

Pe = Nu.Re

Pe = Re.Pr

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Heat Transfer

Heat Transfer Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?

Heat Transfer Planck's distribution law is valid for __________ bodies

Heat Transfer In a shell and tube heat exchanger,

Heat Transfer A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.

Heat Transfer Peclet number (Pe) is given by

Heat Transfer
Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?

Heat Transfer
Planck's distribution law is valid for __________ bodies

Heat Transfer
In a shell and tube heat exchanger,

Heat Transfer
A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.

Heat Transfer
Peclet number (Pe) is given by