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Heat Transfer

Heat Transfer
Agitated film evaporator is suitable for concentrating __________ liquids.

Corrosive
Foaming
Very thin
Viscous

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Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

Decreases
Remains same
First increases upto a certain temperature and then becomes constant
Increases

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Heat Transfer
Prandtl and Reynold's analogies are identical for Prandtl number value of

1
0.5
5

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Heat Transfer
In forced convection, the heat transfer depends on

Re, Pr
none of the listed here
mainly Gr
Re, Gr

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Heat Transfer
For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then

hf = hd
hf could be greater or smaller than hd
hf > hd
hf < hd

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Heat Transfer
Heat flux, as defined in heat flow is analogous to __________ in electricity flow.

Current
Voltage
Resistance
None of these

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