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.Management Sciences
Category: Fluid Mechanics for Chemical
The flow of a liquid through tapering pipe at a constant rate is an example of _______________ flow?
A. Steady uniform
B. Steady non uniform
C. Unsteady uniform
D. Unsteady non uniform
Which of the following is most prone to pulsating discharge flow ?
A. Centrifugal pump
B. Reciprocating pump
C. Gear pump
D. Axial flow pump
The pressure co-efficient is the ratio of pressure forces to ______________ forces?
A. Viscous
B. Inertial
C. Gravity
D. Surface tension
The Prandtl Pitot tube measures the__________________?
A. Velocity at a point in the flow
B. Pressure at a point
C. Average flow velocity
D. Pressure difference in pipe flow
In turbulent flow, a rough pipe has the same friction factor as a smooth pipe____________________?
A. In the zone of complete turbulence
B. When the roughness projections are much smaller than the thickness of the laminar film
C. Everywhere in the transition zone
D. When the friction factor is independent of the Reynold’s number
The head loss due to sudden contraction is proportional to___________________?
A. Velocity
B. Velocity head
C. Turbulence
D. None of these
For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively)?
A. Increase
B. Decrease
C. Remain constant
D. Either A. or B.; depends on other factors
The range of a particular Rotameter can be increased by__________________?
A. Use of floats of different densities
B. No means
C. Increasing the diameter of the float
D. Decreasing the diameter of the float
Buoyant force__________________?
A. For non-symmetrical bodies is not vertical
B. Depends on the depth of the submergence of the floating body
C. Depends on the weight of the floating body
D. None of these
Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the______________?
A. Wall roughness
B. Reynolds number
C. Both A. & B.
D. Neither A. nor B.
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