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Heat Transfer

Heat Transfer
Reynold's analogy states that

Nst α f
NNu α f
Nst α NRe
NRe α f

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

Steam load
None of these
Economy
Capacity

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Heat Transfer
With the increase of temperature, the Col-burn jH factor

May increase or decrease ; depending on temperature
Increases
Decreases
Remains unchanged

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Heat Transfer
Dropwise condensation is promoted on a/an __________ surface.

Smooth
Oily
Glazed
Coated

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

increase the economy
reduce the capacity
reduce the economy
all of the listed here

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Heat Transfer
A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ?

Plate
Sphere
All of these
Cube

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