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Heat Transfer

Heat Transfer
Peclet number (Pe) is given by

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

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Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

400
520
500
200

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Heat Transfer
Heat exchanger tubes are never made of

Lead
Stainless steel
Plain carbon steel
Copper

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Heat Transfer
The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

√(ΔT)
(ΔT)²
(ΔT)⁴
(ΔT)³

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Heat Transfer
For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

No
Low
Extremely low
High

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Heat Transfer
A dephlegmator is a

Vacuum evaporator
Partial condenser
Total condenser
Double pipe heat exchanger

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MORE MCQ ON Heat Transfer

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