[Solved] 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 are correct?

Q68. 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 are correct?

A. 1 only

B. 2 only

C. Both 1 and 2

D. Neither 1 nor 2

Correct answer: D. Neither 1 nor 2

Explanation

Statement 1: “Solar power can be used for running surface pumps and not for submersible pumps.”

Incorrect. Solar power can be used to run both surface pumps and submersible pumps. Submersible solar water pumps are widely used for deep wells and boreholes, while surface solar pumps are used for shallow sources like ponds and rivers.

Statement 2: “Solar power can be used for running centrifugal pumps and not the ones with piston.”

Incorrect. While centrifugal pumps are more commonly used with solar power due to their compatibility with variable power supply, solar power can also be used to run piston (positive displacement) pumps. Piston pumps, diaphragm pumps, and screw (helical rotor) pumps can all be powered by solar energy, especially in low-volume applications