Centrifugal pump is started with its delivery valve __________________? - PakMcqs

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. Axial flow 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. 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...

4. 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...

5. In a centrifugal pump casing, the flow of water leaving the_______________?

   A. radial B. radial C. centrifugal D. rectilinear E. vortex...

6. 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...

7. The optimum value of vane exit angle for a centrifugal pump impeller is_________________?

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

8. 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...

9. 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...

10. 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...