A. 10-15°
B. 20-25°
C. 30-40°
D. 50-60°
E. 80-90°.

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Related Mcqs:

  1. In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?
    A. rectilinear flow B. radial flow C. free vortex motion D. forced vortex E. none of the above...
  2. A turbine pump is basically a centrifugal pump equipped additionally with_________________?
    A. adjustable blades B. backward curved blades C. vaned diffusion casing D. inlet guide blades E. totally submerged operation facility...
  3. Centrifugal pump is started with its delivery valve __________________?
    A. kept fully closed B. kept fully open C. irrespective of any position D. kept 50% open E. none of the above...
  4. In a centrifugal pump casing, the flow of water leaving the_______________?
    A. radial B. radial C. centrifugal D. rectilinear E. vortex...
  5. Head developed by a centrifugal pump depends on___________________?
    A. impeller diameter B. speed C. fluid density D. type of casing E. A. and B. above...
  6. The efficiency of a centrifugal pump is maximum when its blades are__________________?
    A. straight B. bent forward C. bent backward D. bent forward first and then backward E. bent backward first and then forward...
  7. In a centrifugal pump, the liquid enters the pump__________________?
    A. at the top B. at the bottom C. at the center D. from sides E. none of the above...
  8. Motion of a liquid in a volute casing of a centrifugal pump is an example of____________________?
    A. rotational flow B. radial C. forced spiral vortex flow D. forced cylindrical vortex flow E. spiral vortex flow...
  9. Casting of a centrifugal pump is designed so as to minimize________________?
    A. friction loss B. cavitation C. static head D. loss of kinetic energy E. starting time...
  10. If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge_____________________?
    A. same quantity of liquid B. 0.75 Q C. Q/0.75 D. 1.5 Q E. none of the above...
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