A. Velocity increases
B. Pressure decreases
C. Both A. & B.
D. Neither A. nor B.
Related Mcqs:
- 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 - In case of a pipe exit fitted with a nozzle, the____________________?
A. Conversion of kinetic head to pressure head is facilitated
B. Conversion of pressure head to kinetic head is facilitated
C. Power transmitted through the nozzle is maximum, when the head lost due to friction in the
pipe is equal to one third of the total supply head
D. Both B. and C. - The velocity for subsonic flow in a pipeline_______________?
A. Increases in the downstream direction
B. Is constant
C. Decreases in the downstream direction
D. Is independent of the area of flow - Pick out the correct statement pertaining to the flow through a converging-diverging tube ?
A. The value of Mach number is always unity at the throat
B. No shock wave develops in the tube when the Mach number at exit is greater than unity
C. Throughout the converging portion of the tube, the density increases in the downstream
direction
D. None of these - In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is___________________?
A. The velocity of sound
B. Dependent on its cross-sectional area
C. Dependent on fluid viscosity
D. Dependent on fluid density - The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is___________________?
A. √(HW/π)
B. HW/2 (H + W)2
C. HW/4 (H + W)2
D. 2HW/(H + W) - 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 - Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?
A. Temperature
B. Pressure
C. Both A. & B.
D. Neither A. nor B. - An ideal nozzle design aims at________________?
A. Minimising wall friction
B. Suppressing boundary layer separation
C. Both A. & B.
D. Neither A. nor B.
