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Heat Transfer

Heat Transfer
Viscous & heat sensitive liquids are concentrated in __________ evaporators.

Open pan
Long tube
Agitated film
None of these

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Heat Transfer
Heat flux through several resistances in series in analogous to the current flowing through several.

capacitors in series
resistances in series
resistances in parallel
none of the listed here

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Heat Transfer
A BTU/hr.ft.2 °F is equal to

4.88 kcal/hr. m.2°C
None of these
1 kcal/hr. m²°C
1 kcal/hr. m².°K

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Heat Transfer
In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.

Nucleate
Pool
Local
Saturated

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Heat Transfer
Which has the lowest Prandtl number?

Water
Lube oil
Aqueous solution
Liquid metal

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Heat Transfer
Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.)

X/KA
A/Kx
K/Ax
KA/x

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