Search
.Management Sciences
Category: Fluid Mechanics for Chemical
Which of the following is not dimension-less ?
A. Froude number
B. Kinematic viscosity
C. Pressure co-efficient
D. None of these
The pump impeller and the turbine runner in a hydraulic torque converter___________________?
A. Have the same diameter
B. Have different diameters
C. Are directly coupled
D. None of these
The distribution of shear stress in a stream of fluid in a circular tube is_____________________?
A. Linear with radius for turbulent flow only
B. Linear with radius for laminar flow only
C. Linear with radius for both laminar & turbulent flow
D. Parabolic with radius for both laminar & turbulent flow
The contraction co-efficient for Borda’s mouthpiece (for frictionless fluid) is__________________?
A. 0.1
B. 0.5
C. 0.94
D. 1
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
The line of action of the buoyant force passes through the centre of gravity of the_______________________?
A. Submerged body
B. Displaced volume of the fluid
C. Volume of fluid vertically above the body
D. Horizontal projection of the body
Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively_______________?
A. Efficiency, head and B.H.P.
B. Head, efficiency and B.H.P.
C. B.H.P., efficiency and head
D. Efficiency, B.H.P. and head
Unsteady non-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
If Blasius or Darcy friction factor is ‘f1’ then the Fanning friction factor is equal to____________________?
A. f1/4
B. 4f2
C. 2f1
D. f1/2
Recent Comments