Chemical Engineering :: Fluid Mechanics
- The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the
- The vent valve provided in a liquid handling centrifugal pump is
- Stoke's equation is valid in the Reynolds number range
- A liquid is pumped at the rate of 600 litres using 1000 rpm. If the rpm is changed to 1100, the liquid pumped is __________ litres.
- In case of turbulent flow of fluid through a circular pipe, the
- In case of laminar flow of fluid through a circular pipe, the
- Centrifugal compressors compared to reciprocating compressors
- For flow of fluids through packed bed, the superficial velocity is
- Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will
- Buckingham-π theorem states that in any physical problem including 'n' quantities having 'm' diamensions, the quantities can be arranged into __________ independent dimensionless parameters.
Whatsapp
Facebook
|
A.
Mean flow velocity is about 0.5 times the maximum velocity |
|
B.
Velocity profile becomes flatter and flatter with increasing Reynolds number |
|
C.
Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius) |
|
D.
Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more |
|
A.
Shear stress over the cross-section is proportional to the distance from the surface of the pipe |
|
B.
Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder |
|
C.
Velocity profile varies hyperbolically and the shear stress remains constant over the cross-section |
|
D.
Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius) |