۴ 500ب
۸۴۴ 5:120
۸۸ا05 ۸۳۰۸۷9۴۰ ‎09۲۷۶١۲‏

Question46:-Pick correct statement for flow over a flat plate.
‘As For Prandtl number = 1, thermal boundary layer is thicker than hydrodynamic boundary layer
B:-For Prandtl number > 1, thermal boundary layer is thicker than hydrodynamic boundary layer
C=For Prandtl number < 1, thermal boundary layer is thicker than hydrodynamic boundary layer

D:-For Prandt! number

, hydrodynamic boundary layer is thicker than thermal boundary layer
Correct Answer:- Option-C

Question47:-Use of baffles in shell and tube heat exchangers results in
‘AcIncrease in flow path and velocity of shell fluid
B:-Decrease in flow path and increase in velocity of shell fluid
CIncrease in flow path and velocity of tube fluid
Decrease in flow path and increase in velocity of tube fluid
Correct Answer:- Option-é

Question4:-When thick liquor is highly viscous, which of the following feeding methods is preferred ?
‘Ac Forward feed
B:-Backward feed
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D:-All the above give equal performance
Correct Answer:- Option ®

Question49:-Steam consumption in an evaporator is given by
‘AcCapacity x Economy
B:-Capacity/Economy
C:Economy/Capacity
D-None of the above
Correct Answer:- Option ®

QuestionS0:-Compared to single effect evaporator, for multiple effect evaporators
‘AcBoth economy and capacity increase
B:-Economy reduces and capacity increases
C:Economy increases and capacity reduces
D-Both economy and capacity reduce
Correct Answer:- Option-C

QuestionS1:-Absorption factor is
‘Ac Ratio of slope of equilibrium line to that of operating line
B:-Ratio of slope of operating line to that of equilibrium line
C=Product of slope of equilibrium line and that of operating line
D-Sum of slope of equilibrium line and that of operating line
Correct Answer:- Option ®

Question52:-Fick's first law of diffusion is

०:44

Correct Answer: Option-D
‘Question53:-As temperature increases, equilibrium solubility of a gas in a liquid during absorption

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