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.Management Sciences
Category: Fluid Mechanics for Chemical
Lower BWG means _____________ of the tube?
A. Lower thickness
B. Lower cross-section
C. Outer diameter
D. Inner diameter
In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure ______________ the vapor pressure of the liquid at the suction temperature?
A. Lower than
B. Higher than
C. Equal to
D. None of these
The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of _____________ fluid?
A. Dilatent
B. Pseudo-plastic
C. Bingham plastic
D. Newtonian
Check in a centrifugal pump is________________?
A. Provided in the discharge line
B. Generally a globe valve
C. Provided to prevent liquid from backing up through the pump when the pump is turned off or
accidently stops running
D. All A., B. and C.
Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems?
A. Non-viscous
B. Viscous
C. Turbulent
D. Rotational
Boundary layer separation is caused by the_________________?
A. Reduction of pressure to vapour pressure
B. Boundary layer thickness reducing to zero
C. Adverse pressure gradient
D. Reduction of pressure gradient to zero
Identification of pipelines carrying different liquids and gases is done by the ____________ of the pipe?
A. Diameter
B. Colour
C. Altitude
D. None of these
Horsepower requirement for given pump capacity depends upon the_______________?
A. Specific gravity of the liquid
B. Suction lift
C. Discharge head
D. All A., B. and C.
Pascal’s law is valid, only when the fluid is_____________________?
A. Frictionless and at rest
B. At rest
C. At rest and when the frictionless fluid is in motion
D. None of these
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