With reference to solar water pumps, consider the following statements:

1. Solar power can be used for running surface pumps and not for submersible pumps.
2. Solar power can be used for running centrifugal pumps and not the ones with piston. Which of the statements given above is/are correct?

Solar water pumps are utilized in residential, commercial, and agricultural settings.

Regarding pump types:

• Rotating pumps, commonly centrifugal pumps, are suited for fixed head applications, with output proportional to rotation speed.
• Positive Displacement (PD) pumps move fluid by repeatedly enclosing a fixed volume and moving it mechanically. These can be driven by pistons, screws, gears, rollers, diaphragms, or vanes.

Therefore, solar power can be used to run both centrifugal and piston pumps.

Regarding pump placement, pumps can be:

• Submersible: Placed underwater.
• Surface: Placed above the waterline.

Therefore, solar power can be used for both submersible and surface pumps.

Statement 1 is not correct. Statement 2 is not correct. Hence, neither statement 1 nor statement 2 is correct.