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Heat Transfer

Heat Transfer
Value of Nusselt number [Nu = (hD/k)] for the heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is

2
100
0.5
10

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Heat Transfer
Intermittant tube cleaning is possible to be done in case of a __________ evaporator.

Basket type
None of these
Calendria
Horizontal tube

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Heat Transfer
Kg of liquid evaporated per hour in an evaporator is defined as its

Economy
Steam load
None of these
Capacity

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Heat Transfer
In an extended surface heat exchanger, fluid having lower co-efficient

Should not be used as it gives very high pressure drop
Flows outside the tubes
Flows through the tube
Can flow either inside or outside the tubes

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Heat Transfer
Trap is used to remove __________ from steam pipe lines.

Non-condensables
None of these
Condensate
Steam

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Heat Transfer
In a boiling curve, the peak heat flux is called the __________ point.

Boiling
Leidenfrost
Burnout
Nusselt

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