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.Management Sciences
Category: Fluid Mechanics for Chemical
Normal depth in open channel flow is the depth of flow in the channel ____________________?
A. Corresponding to uniform flow
B. Measured normal to the channel bed
C. Corresponding to steady flow
D. None of these
Centre of pressure in an immersed body is ______________ the centre of gravity?
A. Above
B. Below
C. At
D. Either above or below; depends on the liquid density
A tube is specified by its____________________?
A. Thickness only
B. Outer diameter only
C. Thickness & outer diameter both
D. Inner diameter
Which of the following valves will incur maximum pressure drop for the same discharge of water ?
A. Globe valve
B. Gate valve
C. Needle valve
D. Butterfly valve
Unsteady uniform flow is represented by flow through a/an_________________?
A. Long pipe at constant rate
B. Long pipe at decreasing rate
C. Expanding tube at increasing rate
D. Expanding tube at constant rate
During ageing of fluid carrying pipes, the__________________?
A. Pipe becomes smoother with use
B. Friction factor increases linearly with time
C. Absolute roughness decreases with time
D. Absolute roughness increases linearly with time
Potential flow is the flow of______________?
A. Compressible fluids with shear
B. Compressible fluids with no shear
C. Incompressible fluids with shear
D. Incompressible fluids with no shear
Pick out the wrong statement ?
A. In a static mass of liquid, the pressure at a point is the same for all liquids
B. Pressure decreases exponentially with elevation in an isothermal atmosphere
C. Atmospheric pressure = absolute pressure ‒ gage pressure
D. As per Pascal’s law, the pressure at a point in a static or uniformly moving fluid is equal in all
directions
Hydraulic intensifier is used for increasing the ___________________?
A. Rate of velocity of liquid supply
B. Rate of flow through delivery pipeline of a pump
C. Intensity of pressure of the liquid
D. Momentum rate through delivery pipe
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