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.Management Sciences
Category: Fluid Mechanics for Chemical
Head developed by a centrifugal pump depends on its___________________?
A. Speed
B. Impeller diameter
C. Both A. and B.
D. Neither A. nor B.
For flow of fluids through packed bed, the superficial velocity is_________________?
A. Less than the average velocity through channels
B. More than the average velocity through channels
C. Dependent on the pressure drop across the bed
D. Same as the average velocity through channels
A mixed flow centrifugal pump_______________________?
A. Employs such an impeller, through which the flow is a combination of radial & axial flow
B. Mixes the two fluids before pumping them
C. Pumps the two fluids separately and then mixes them
D. Employs impellers in both the radial & axial directions
Foot valves provided in pumps are ____________ valves?
A. Relief
B. Three/four way
C. Pressure reducing
D. Directional control
A stream line is___________________?
A. Fixed in space in steady flow
B. Always the path of particle
C. Drawn normal to the velocity vector at every point
D. A line connecting the mid points of flow cross-section
A hydraulic ram acts as a/an ______________ pump?
A. Centrifugal
B. Reciprocating
C. Impulse
D. Parallel cylinder
Which law/principle of solid mechanics is similar/equivalent to Newton’s law of viscosity in fluid mechanics ?
A. Archimedes principle
B. Newton’s second law of motion
C. Hooke’s law
D. Newton’s third law of motion
Which of the following has the maximum compression ratio ?
A. Blower
B. Compressor
C. Vacuum pump
D. Fan
The line traced by a single fluid particle as it moves over a period of time is called ______________ line?
A. Stream
B. Path
C. Equipotential
D. None of these
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