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

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
In a single effect evaporator, the economy is

1

None of these

> 1

< 1

1

None of these

> 1

< 1

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Heat Transfer
A hot body will radiate heat most rapidly, if its surface is

White & rough

Black & rough

Black & polished

White & polished

White & rough

Black & rough

Black & polished

White & polished

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Heat Transfer
In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.

Equal to

More than

Either more or less than (depending upon the fluid)

Less than

Equal to

More than

Either more or less than (depending upon the fluid)

Less than

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Heat Transfer
In a multiple effect evaporator, the effect of boiling point elevation is to

reduce the economy

increase the economy

reduce the capacity

all of the listed here

reduce the economy

increase the economy

reduce the capacity

all of the listed here

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Heat Transfer
If Prandtl number is greater than the Schmidt number, then the

none of the listed here

thermal & concentration boundary layers are of equal thickness

concentration boundary layer lies inside the thermal boundary layer

thermal boundary layer lies inside the concentration boundary layer

none of the listed here

thermal & concentration boundary layers are of equal thickness

concentration boundary layer lies inside the thermal boundary layer

thermal boundary layer lies inside the concentration boundary layer

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Heat Transfer

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

Heat Transfer In a single effect evaporator, the economy is

Heat Transfer A hot body will radiate heat most rapidly, if its surface is

Heat Transfer In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.

Heat Transfer In a multiple effect evaporator, the effect of boiling point elevation is to

Heat Transfer If Prandtl number is greater than the Schmidt number, then the

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

Heat Transfer
In a single effect evaporator, the economy is

Heat Transfer
A hot body will radiate heat most rapidly, if its surface is

Heat Transfer
In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.

Heat Transfer
In a multiple effect evaporator, the effect of boiling point elevation is to

Heat Transfer
If Prandtl number is greater than the Schmidt number, then the