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.Management Sciences
Category: CHEMICAL ENGINEERING
The eddy diffusivity for a liquid in plug flow must be_________________?
0
A. 1
B. 0
C. ∞
D. Between 0 and 1
The type of pump used for lifting large quantity of sewage is a _________________ pump ?
A. Gear
B. Centrifugal
C. Reciprocating
D. Plunger
Freundlich equation applies to the adsorption of solute from___________________?
A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these
Regenerators compared to the recuperators for the same duty__________________?
A. Occupy more space
B. Are less costly
C. Are of smaller size
D. All A., B. and C.
I.D. of 1/4″ schedule 40 pipe is 0.364″. I.D. of a 1/2″ schedule 40 pipe would be ______________ inch?
A. 4.728
B. 0.5
C. 0.622
D. 0.474
Constantan used in thermocouples is an alloy of___________________?
A. Iron & copper
B. Copper & aluminium
C. Lead & tin
D. None of these
Dittus-Boelter equation cannot be used for molten metals mainly due to its very low_____________________?
A. Prandtl number
B. Grashoff number
C. Thermal conductivity
D. Viscosity
Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to___________________?
A. G0.2
B. G0.5
C. G0.8
D. G1.5
Moisture can be removed from lubricating oil using_________________?
A. Tubular centrifuge
B. Clarifier
C. Sparkler filter
D. Vacuum leaf filter
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