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Heat Transfer

Heat Transfer
Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is

0.1
< 1
>1
L

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Heat Transfer
Prandtl and Reynolds analogy are same, when Prandtl number is

1.5
> 2
1
0.5

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Heat Transfer
The steam ejector is used to

Superheat the steam
None of these
Create vacuum
Remove condensate from the steam pipelines

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Heat Transfer
Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping

Both the tube sheets floating
The top tube sheet floating and bottom tube sheet fixed
The top tube sheet fixed and the bottom tube-sheet floating
Both the tube sheets fixed

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Heat Transfer
Boiling point elevation of a solution of NaOH

Increases rapidly with temperature rise
Is almost independent of pressure
Is almost independent of temperature
Both B and C

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Heat Transfer
With increase in temperature, the thermal conductivity of most liquids

Increases
Remains same
Decreases
First increases upto a certain temperature and then becomes constant

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MORE MCQ ON Heat Transfer

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