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Heat Transfer

Heat Transfer
Peclet number (Pe) is given by

Pe = Nu.Re
Pe = Re/Pr
Pe = Pr/Re
Pe = Re.Pr

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Heat Transfer
The thickness of condensate layer in filmwise condensation depends on the

Liquid flow rate from the surface
Surface configuration
Condensation rate
All of these

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Heat Transfer
A __________ evaporator employs an annular downtake.

Horizontal
Basket type
Long tube vertical
None of these

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Heat Transfer
At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?

0.5
< 0.1
< 0.5
> 0.6

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Heat Transfer
(Cp . μ)/K is termed as the __________ number.

Grashoff
Stanton
Nusselt
Prandtl

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Heat Transfer
Heat exchanger tubes are never made of

Lead
Plain carbon steel
Copper
Stainless steel

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