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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 7
26.
In which mode of heat transfer, the Biot number is important ?
Transient heat conduction
Natural convection
Forced convection
Radiation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
__________ paint has the minimum absorption co-efficient.
Black
White lead
Grey
Light cream
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube
exit-fluid temperature > wall temperature.
exit fluid temperature < wall temperature.
exit fluid temperature = wall temperature.
Graetz number > 100.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is
520
200
400
500
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Which is the most suitable for the con-certration of highly concentrated solution?
Open pan evaporation
Long tube vertical evaporator
Agitated film evaporator
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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