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.Management Sciences
Category: Fluid Mechanics for Chemical
Stoke’s equation is valid in the Reynolds number range__________________?
A. 0.01 to 0.1
B. 0.1 to 2
C. 2 to 10
D. 10 to 100
Each term in Bernoulli‟s equation represents the _____________ of the fluid?
A. Energy per unit mass
B. Energy per unit weight
C. Force per unit mass
D. None of these
The friction factor for turbulent flow in a hydraulically smooth pipe______________?
A. Depends only on Reynolds number
B. Does not depend on Reynolds number
C. Depends on the roughness
D. None of these
The maximum depth from which a centrifugal pump can draw water is________________?
A. Dependent on the speed of the pump
B. Dependent on the power of the pump
C. 34 feet
D. 150 feet
For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is___________________?
A. More
B. Less
C. Equal
D. Either A. or B.; depends on the viscosity of the fluid
The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is__________________?
A. Parabolic
B. Flat
C. Flat near the wall and parabolic in the middle
D. Parabolic near the wall and flat in the middle
Mach number is important in a fluid flow problem, when the inertia and _____________ forces predominate?
A. Elastic
B. Viscous
C. Gravity
D. None of these
For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be __________________?
A. V1 < V2 < V3
B. V2 > V1 and V2 > V3
C. V1 > V2 > V3
D. None of these
Which of the following is used for pumping crude oil from oil well ?
A. Single stage centrifugal pump
B. Gear pump
C. Screw pump
D. Duplex/triplex reciprocating pump
With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity___________________?
A. Widens
B. Squeezes
C. Does not change
D. Unpredictable from the data
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