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Heat Transfer

Heat Transfer
For what value of Prandtl number, the Col-burn analogy is valid ?

0.06 to 120
0.6 to 120
l to 50
1 to 103

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Heat Transfer
In a boiling curve, the peak heat flux is called the __________ point.

Burnout
Boiling
Nusselt
Leidenfrost

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Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

3000
9000
4600
4000

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Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

More than 45°C
Less than 45°C
Equal to 45°C
Initially decreases and remains constant thereafter

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

5000-15000
1000-1500
100-500
18537

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Heat Transfer
Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.

Density
Thermal conductivity
Viscosity
Boiling point (at the same pressure)

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MORE MCQ ON Heat Transfer

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