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HEAT TRANSFER

Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

4600
4000
3000
9000

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Heat Transfer
Use of transverse baffles in a shell and tube heat exchanger is done to increase the

Flow velocity
Turbulence of shell side fluid
All of these
Rate of heat transfer

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Heat Transfer
Heat exchanger tubes are never made of

Copper
Lead
Plain carbon steel
Stainless steel

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Heat Transfer
Which of the following has the minimum absorptivity?

Aluminium foil
Refractory bricks
Coal dust
Iron plates

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Heat Transfer
The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation.

Is same as
Half
Lower than
Greater than

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