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.Management Sciences
Category: Chemical Heat Transfer
Removal of ______________ heat is involved in the condensation of a vapor under saturated conditions?
0
A. Super
B. Sensible
C. Latent
D. Both B. & C.
Which of the following is not concerned with the heat transfer ?
A. Brinkman number
B. Stanton number
C. Schmidt number
D. Peclet number
The overall resistance for heat transfer through a series of flat resistance, is the _____________ of the resistances?
A. Average
B. Geometric mean
C. Product
D. Sum
A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides __________________?
A. Higher economy
B. Lower capacity
C. Both A. & B.
D. Lower economy
Film boiling is usually not desired in commercial equipments, because____________________?
A. The heat transfer rate is low in view of the large temperature drop
B. It is difficult to maintain
C. It is not economic
D. None of these
LMTD can’t be used as such without a correction factor for the_________________?
A. Multipass heat exchanger
B. Baffled heat exchanger
C. Condensation of mixed vapour in a condenser
D. All A. B. and C.
Which of the following is concerned with both heat and mass transfer ?
A. Lewis relationship
B. Nusselt number
C. Kutateladze number
D. Froude number
In a forward feed multiple effect evaporator, the pressure is ____________________?
A. Highest in last effect
B. Lowest in last effect
C. Same in all effects
D. Dependent on the number of effects
Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats ?
A. P and Q
B. P and R
C. P and S
D. R and S
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