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Heat Transfer

Heat Transfer
Planck's distribution law is valid for __________ bodies

black
coloured
all of the listed here
white

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Heat Transfer
Open pan evaporators are preferred to be used, when the solution to be concentrated is

Scaling
Corrosive
Salty
Highly viscous

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Heat Transfer
Peclet number (Pe) is given by

Pe = Nu.Re
Pe = Re/Pr
Pe = Pr/Re
Pe = Re.Pr

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Heat Transfer
__________ chart is known as transient heat conduction chart.

Dirhing's
Mollier's
Cox
Heisler's

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Heat Transfer
For a perfectly transparent surface (like gases), the

Reflectivity = 0
Absorptivity = 0
Transmissivity = 1
All 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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