A. The discharge through a Venturimeter depends upon Δp only and is independent of
orientation of the meter
B. A Venturimeter with a given gage difference discharges at a greater rate, when the flow is
vertically downward through it, than when the flow is vertically upward
C. For a given pressure difference, the discharge of gas is greater through a Venturimeter, when
compressibility is taken into account, than when it is neglected
D. The overall pressure loss is the same in a given pipe line, whether a Venturimeter or a nozzle
with the same throat dia is used
Related Mcqs:
- Select the correct practical example of steady non-uniform flow?
A. Motion of water around a ship in a lake
B. Motion of river around bridge piers
C. Steadily decreasing flow through a reducing section
D. Steadily increasing flow through a pipe - Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter ?
A. For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that
leaving the Venturimeter
B. Discharge of fluid through a Venturimeter depends upon the gage difference irrespective of
the orientation of Venturimeter
C. Venturimeter occupies less space than an orificemeter
D. Venturimeter incurs less power loss compared to an equivalent orificemeter - Pick out the correct statement pertaining to transition/ entrance length in fluid flow ?
A. The length of entrance region of pipe, in which full development of fluid flow takes place
such that velocity profile does not change downstream, is called the transition length
B. Transition length for laminar flow of Newtonian fluids in a pipe of diameter ‘d’ is equal to
0.05. D.NRe
C. Transition length for turbulent flow of Newtonian fluids in a smooth pipe of diameter ‘d’ is
equal to 50 D
D. All A., B. and C. - Pick out the correct statement pertaining to Venturimeter ?
A. A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically
downward, than when the flow is vertically upward
B. The co-efficient of contraction of a Venturimeter is always unity
C. For a fixed pressure drop, the discharge of a gas through a Venturimeter is greater, when
compressibility is taken into account, than when it is neglected
D. None of these - Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement ?
A. f1 = f2
B. f1 < f2
C. f1 > f2
D. Data not sufficient to relate f1 & f2 - Pick out the correct statement?
A. Human blood is a Newtonian fluid
B. A Newtonian fluid obeys Newton’s law of cooling
C. For a non-Newtonian fluid, a straight line passes through the origin in a plot between shear
stress and shear gradient
D. Thin lubricating oil is an example of a non-Newtonian fluid - Pick out the correct statement?
A. A forced vortex occurs when fluid rotates as a solid about an axis
B. In laminar flow, Newton’s law of viscosity does not apply
C. A free vortex occurs, when fluid rotates as a solid
D. In turbulent flow, there are neither cross-currents nor eddies - Pick out the correct statement pertaining to the flow through a converging-diverging tube ?
A. The value of Mach number is always unity at the throat
B. No shock wave develops in the tube when the Mach number at exit is greater than unity
C. Throughout the converging portion of the tube, the density increases in the downstream
direction
D. None of these - A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation ?
A. Inertial and drag forces are important
B. Drag, gravitational and buoyancy forces are important
C. Drag force and gravitational forces are important
D. None of the above - Pick out the correct statement?
A. Fanning friction factor is inversely proportional to Reynolds number always
B. The property of a randomly packed bed (with raschig rings) is given by the ratio of the total
volume to the volume of voids in the bed
C. Mach number in an incompressible fluid is always unity
D. Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under
conditions of flow
