Rate of heat transfer by vaporisation from pools of water is affected by the

Heat Transfer
Rate of heat transfer by vaporisation from pools of water is affected by the

All of these

Surface tension of water

Viscosity of water

Nature of heating surface and distribution of bubbles

All of these

Surface tension of water

Viscosity of water

Nature of heating surface and distribution of bubbles

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

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

All of these

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

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

All of these

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 gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally

Remains unchanged

Increases

Increases exponentially

Decreases

Remains unchanged

Increases

Increases exponentially

Decreases

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Heat Transfer
For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Decrease

Increase

First increase and then decrease

First decrease and then increase

Decrease

Increase

First increase and then decrease

First decrease and then increase

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Heat Transfer
To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is

3-2 heat exchanger

1-2 heat exchanger

1-1 heat exchanger

2-4 heat exchanger

3-2 heat exchanger

1-2 heat exchanger

1-1 heat exchanger

2-4 heat exchanger

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Heat Transfer
A __________ evaporator employs an annular downtake.

None of these

Long tube vertical

Basket type

Horizontal

None of these

Long tube vertical

Basket type

Horizontal

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Heat Transfer

Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the

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

Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally

Heat Transfer For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Heat Transfer To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is

Heat Transfer A __________ evaporator employs an annular downtake.

Heat Transfer
Rate of heat transfer by vaporisation from pools of water is affected by the

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

Heat Transfer
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally

Heat Transfer
For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would

Heat Transfer
To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is

Heat Transfer
A __________ evaporator employs an annular downtake.