6281. A hydraulic ram acts as a/an __________ pump.
Centrifugal
Reciprocating
Impulse
Parallel cylinder
✅ The correct answer is option C.
Chemical Engineering
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6282. Fanning friction factor for laminar flow of fluid in a circular pipe is
Not a function of the roughness of pipe wall
Inversely proportional to Reynolds number
Both A and B
Neither A nor B
✅ The correct answer is option C.
6283. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
Discharge of water by a centrifugal pump being run at a constant rpm
Water flow in the suction and discharge pipe of a reciprocating pump
Water discharge from a vertical vessel in which constant level is maintained
Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
✅ The correct answer is option B.
6284. In hindered settling, the particles are
Placed farther from the wall
Not affected by other particles and the wall
Near each other
None of these
✅ The correct answer is option C.
6285. Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an
Pitot tube
Venturimeter
Orificemeter
Rotameter
✅ The correct answer is option A.
6287. Scale up of agitator design requires
Geometrical similarity only
Dynamic similarity only
Both geometrical and dynamic similarity
All of the above
✅ The correct answer is option D.
6288. Purpose of air lift pump is to
Compress air
Lift compressed air
Lift water from a well by using compressed air
Lift air under negative pressure
✅ The correct answer is option C.
6289. Diaphragm pumps are used to transport
Solids
Liquids
Fluids
Slurries
✅ The correct answer is option D.
6290. Potential flow is characterised by the
Irrotational and frictionless flow
Irrotational and frictional flow
One in which dissipation of mechanical energy into heat occurs
Formation of eddies within the stream
✅ The correct answer is option A.