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Centrifugal Pump Interview Questions 3 blog contains following questions

21. What is use of Euler's equation in pumping?

22. Why do we use lubricating oil system in a centrifugal pump? What are the safe guarding systems of a centrifugal pump?

23. What is the difference between single stage pump and multistage pump?

24. What types of bearings are used in a pump?

25. What will happen to bearing, if it is too hot?

26. Identify main parts of a multistage centrifugal pump and write correct names.

27. How do we remove heat from an operating pump?

28. What is a centrifugal force?

29. How a pump driver is connected to pump?

30. What is the function of bearing?

21. What is use of Euler's equation in pumping?

Pump transferring mechanical energy to liquid flowing and losses.

This energy conversation process is calculated by Euler's equation.

22. Why do we use lubricating oil system in a centrifugal pump? What are the safe guarding systems of a centrifugal pump?

Lubricating oil system is to remove heat from pump bearings

Safe guarding systems of a centrifugal pump

  • Pre-warning alarms (Unit Alarms)
  • Trip switches
  • Safety relief valves
  • Seal pot level high low alarms

23. What is the difference between single stage pump and multistage pump?

Single stage pump has only one impeller and multistage pump has two or more impellers

24. What types of bearings are used in a pump?

Sleeve bearings and ball bearings are used in pump.

25. What will happen to bearing, if it is too hot?

If the bearings are too hot they can seize the shaft.

26. Identify main parts of a multistage centrifugal pump and write correct names.

  1. Upper casing,
  2. Mechanical seal.
  3. Bearing housing,
  4. Suction
  5. Discharge,
  6. Lower casing.

27. How do we remove heat from an operating pump?

Excessive heat can be removed from pump by ambient air temperature or by circulating cooling water through water jackets.

28. What is a centrifugal force?

A force, which tends to move an object away from the center of rotation, is called centrifugal force.

29. How a pump driver is connected to pump?

Pump driver is connected to a pump by coupling.

30. What is the function of bearing?

Pump bearings control the side to side movement or radial movement of the Shaft. It also controls the forward and backward movement or thrust of the Shaft.

Thanks for reading - Centrifugal Pump Interview Questions 3
Naitik Patel
Industrial Guide

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