A. kept fully closed
B. kept fully open
C. irrespective of any position
D. kept 50% open
E. none of the above

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Related Mcqs:

  1. For starting an axial flow pump, its delivery valve should be____________________?
    A. closed B. open C. depends on starting condition and flow desired D. could be either open or closed E. partly open and partly closed...
  2. 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...
  3. 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...
  4. In axial flow fans and turbines, fluid enters and leaves as follows________________?
    A. radially, axially B. axially, radially C. axially, axially D. radially, radially E. combination of axial and radial...
  5. 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...
  6. In a centrifugal pump casing, the flow of water leaving the_______________?
    A. radial B. radial C. centrifugal D. rectilinear E. vortex...
  7. 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...
  8. 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...
  9. In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by_______________?
    A. designing new impeller B. trimming the impeller size to the required size by machining C. not possible D. some other alterations in the impeller E. none of the above...
  10. For small discharge at high pressure, following pump is preferred_____________________?
    A. centrifugal B. axial flow C. mixed flow D. propeller E. reciprocating...
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