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Heat Transfer

Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

200
520
500
400

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Heat Transfer
When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling.

transition
pool
none of the listed here
film

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Heat Transfer
'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

None of these
Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient
Factor of safety
Non-dimensional factor

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Heat Transfer
Crystallisation of solids from a homogeneous solution is a/an __________ process.

None of these
Exothermic
Mildly endothermic
Highly endothermic

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Heat Transfer
The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is

12.0 kW/m²
16.5 kW/m²
14.6 kW/m²
11.2 kW/m²

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Heat Transfer
Which of the following is unimportant in forced convection ?

none of the listed here
Reynolds number
Prandtl number
Grashhoff number

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