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Heat Transfer

Heat Transfer
Steam side heat transfer co-efficient in an evaporator is in the range of __________ kcal/hr.m²°C.

5000-15000
18537
100-500
1000-1500

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Heat Transfer
When vaporisation takes place directly at the heating surface, it is called

film boiling
nucleate boiling
vapour binding
all of the listed here

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Heat Transfer
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.

Linear
Hyperbolic
Parabolic
Logarithmic

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Heat Transfer
For specified tube outside diameter, higher BWG means higher

weight per unit length
cross-sectional area
none of the listed here
tube thickness

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Heat Transfer
Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is

None of the listed here
I2R
IR
IR2

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Heat Transfer
In SI units, fouling factor is expressed in

m²°K/W
m²°K
W/m²°K
m°K/W

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