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Heat Transfer

Heat Transfer
Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

Both B & C
Latent
Super
Sensible

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Heat Transfer
Prandtl number for most of dry gases is about

150
0.72
0.001
70

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Heat Transfer
The purpose of floating head in a heat exchanger is to

Provide support for tubes
Avoid buckling of tubes
Decrease the pressure drop
Facilitate its lengthening, if needed

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Heat Transfer
Steam side heat transfer co-efficient in an evaporator is in the range of __________ kcal/hr.m²°C.

18537
1000-1500
100-500
5000-15000

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Heat Transfer
The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation.

Is same as
Lower than
Greater than
Half

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Heat Transfer
Evaporation by thermocompression results in the

Saving of steam
Both A and B
Realisation of multiple effect economy in a single effect
None of these

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