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.Management Sciences
Category: Fluid Mechanics for Chemical
In fluid flow, cavitation is caused, if the____________________?
A. Fluid velocity decreases to zero
B. Total energy decreases
C. Both A. and B.
D. Flow pressure approaches its vapor pressure at the prevailing temperature
The dimension of kinematic viscosity is_________________?
A. ML-2T-1
B. L2T-1
C. ML-2T-2
D. None of these
Momentum transfer in laminar flow of fluids results due to the_________________?
A. Viscosity
B. Density
C. Velocity gradient
D. None of these
For the manometer set up shown in the figure, the pressure difference PA – PB is given by_________________?
A. (ρH – ρair)gH
B. (ρH – ρL)gH
C. (ρH – ρL) gH + (ρL – ρair) . g(L – H)
D. (ρH – ρL) gL + (ρL – ρair)gH
Dean number is concerned with the____________________?
A. Fluid-particle interaction
B. Fluid flow through helical pipes
C. Power consumption in agitated vessels
D. Psychrometry
In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow ?
A. Discharge of water by a centrifugal pump being run at a constant rpm
B. Water flow in the suction and discharge pipe of a reciprocating pump
C. Water discharge from a vertical vessel in which constant level is maintained
D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
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