A. Irrotational and frictionless flow
B. Irrotational and frictional flow
C. One in which dissipation of mechanical energy into heat occurs
D. Formation of eddies within the stream
Related Mcqs:
- 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 ?
A. Discharge of water by a centrifugal pump being run at a constant rpm
B. Water flow in the suction and discharge pipe of a reciprocating pump
C. Water discharge from a vertical vessel in which constant level is maintained
D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe - Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?
A. A, C, D
B. B, D, E
C. A, B, E
D. A, D, E - Laminar flow is characterised by the nonexistence of_________________?
A. Pressure fluctuation
B. Eddies
C. Deviating velocities
D. All A., B. & C. - Boundary layer separation is characterised by one of the conditions given below, where ‘Re’ is the Reynolds number for the flow. Select the appropriate conditions ?
A. Re <> 1, accelerating flow
C. Re << 1, decelerating flow
D. Re >>1, decelerating flow - Potential flow is the flow of______________?
A. Compressible fluids with shear
B. Compressible fluids with no shear
C. Incompressible fluids with shear
D. Incompressible fluids with no shear - The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?
A. Length is shorter
B. Throat diameter is more
C. Sudden expansion of flow in the downstream occurs
D. Distance between the throat and the inlet is more - Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is____________________?
A. Q/2
B. Q/4
C. Q/8
D. Q/16 - In area meter (e.g., Rotameter), with increase in the fluid flow rate, the___________________?
A. Pressure drop increases linearly
B. Pressure drop is almost constant
C. Area through which fluid flows does not vary
D. None of these - Potential function is applicable only for __________ flow?
A. Irrotational
B. Turbulent
C. Steady
D. None of these - In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?
A. Rotational
B. Unsteady
C. Turbulent
D. Non-uniform