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Heat Transfer

Heat Transfer
Corrosiveness of steam condensate is due to the presence of

Both A & B
Neither A nor B
CO₂
Dissolved O₂

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Heat Transfer
Reynold's analogy states that

NRe α f
Nst α NRe
NNu α f
Nst α f

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Heat Transfer
For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy

d²T/dZ² > 0
d²T/dZ² < 0
d²T/dZ² = 0
dT/dZ = 0

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Heat Transfer
__________ equation relates the thermal conductivity of a solid to its temperature.

Kopp's
Kistyakowski
Lee's
Antonie

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Heat Transfer
The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.

0.5-50
5-50
0.38-0.78
100-1000

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Heat Transfer
In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side __________ the heat transfer rate.

May increase or decrease, depends on the type of baffle
Decreases
Does not affect
Increases

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