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Heat Transfer

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

Latent
Both B & C
Sensible
Super

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Heat Transfer
As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient

continues to increase
goes through a minimum
goes through a maximum.
continues to decrease

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Heat Transfer
Value of Prandtl number for water ranges from

5 to 10
100 to 500
1000 to 2000
L to 2

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Heat Transfer
Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is

IR2
None of the listed here
I2R
IR

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Heat Transfer
Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is

0.5
0.7
0.6
0.4

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

Absorptivity = 0
Reflectivity = 0
All of these
Transmissivity = 1

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