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Heat Transfer

Heat Transfer
Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter)

0.2 D
0.4 D
0.3 D
0.5 D

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Heat Transfer
The main purpose of providing fins on heat transfer surface is to increase the

Heat transfer area
Mechanical strength of the equipment
Temperature gradient
Heat transfer co-efficient

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Heat Transfer
Peclet number (Pe) is given by

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

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Heat Transfer
_______ paint has the maximum absorption coefficient.

Black
White
Yellow
Grey

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Heat Transfer
With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer

Decreases
Remains unaffected
Increases
Increases exponentially

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Heat Transfer
In pipe flow, heat is transferred from hot wall to the liquid by

Forced convection and conduction
Forced convection only
Conduction only
Free and forced convection

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MORE MCQ ON Heat Transfer

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