The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

A. Manometric efficiency

B. Mechanical efficiency

C. Overall efficiency

D. Volumetric efficiency

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  1. An impulse turbine is used for
  2. Axial flow pump is started with its delivery valve
  3. According to fan laws, for the fans having constant wheel diameters, the power demand varies
  4. Which of the following is not a reaction turbine?
  5. The specific speed (Ns) of a centrifugal pump is given by
  6. Hydraulic accumulator is used for
  7. Kinematic similarity is said to exist between the model and the prototype, if both of them
  8. Delivery head of a centrifugal pump is
  9. When a piping system is made up primarily of friction head and very little of vertical lift, then pump…
  10. The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
  11. Which of the following statement is correct as regard to water wheels?
  12. High specific speed of a pump implies it is
  13. In an outward flow reaction turbine
  14. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal…
  15. Which of the following statement is correct?
  16. Which of the following pump is preferred for flood control and irrigation applications?
  17. Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the…
  18. The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional…
  19. The gross or total head of the turbine is the ________ of the water levels at the head race and tail…
  20. The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is
  21. The Fourneyron turbine is _________ reaction turbine.
  22. In axial flow fans and turbines, fluid enters and leaves as follows
  23. According to fan laws, at constant pressure, the speed capacity and power vary
  24. A hydraulic accumulator normally consists of
  25. A Francis turbine is used when the available head of water is
  26. Which type of the pump is different from others in the same group?
  27. The overall efficiency of a reaction turbine is the ratio of
  28. The power developed by a turbine is (where H = Head of water under which the turbine is working)
  29. Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal…
  30. Francis, Kaplan and propeller turbines fall under the category of