In forced convection, the heat transfer depends on

Heat Transfer
In forced convection, the heat transfer depends on

none of the listed here

Re, Pr

Re, Gr

mainly Gr

none of the listed here

Re, Pr

Re, Gr

mainly Gr

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Heat Transfer
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head

none of the listed here

four times

twice

square root of

none of the listed here

four times

twice

square root of

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Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

All of these

Presence of a non-condensible gas decreases the condensing film co-efficient

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

All of these

Presence of a non-condensible gas decreases the condensing film co-efficient

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

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Heat Transfer
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area

Remains constant

Increases

Decreases

Passes through a maxima

Remains constant

Increases

Decreases

Passes through a maxima

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Heat Transfer
For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is

Nu = Gz

Nu = 2Gz0.5

Nu = Gz

Nu = 0.023 Re0.8 . Pr0.4

Nu = Gz

Nu = 2Gz0.5

Nu = Gz

Nu = 0.023 Re0.8 . Pr0.4

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Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

First increases upto a certain temperature and then becomes constant

Decreases

Increases

Remains same

First increases upto a certain temperature and then becomes constant

Decreases

Increases

Remains same

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Heat Transfer

Heat Transfer In forced convection, the heat transfer depends on

Heat Transfer In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head

Heat Transfer In a gas-liquid shell and tube heat exchanger, the

Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area

Heat Transfer For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is

Heat Transfer With increase in temperature, the thermal conductivity of most liquids

Heat Transfer
In forced convection, the heat transfer depends on

Heat Transfer
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head

Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

Heat Transfer
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area

Heat Transfer
For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is

Heat Transfer
With increase in temperature, the thermal conductivity of most liquids