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UPSC Prelims 2020 Paper-1 📅 04 Oct, 2020

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?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
Result Summary
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UPSC Prelims
2020 • 04 Oct, 2020 • Paper-1
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?
Correct Answer
Neither 1 nor 2
Fundamental Principles of Solar Power: Photovoltaic solar panels fundamentally do one thing: they convert sunlight into direct electric current (DC). This gener......
Ref/Book : UPSC Prelims 2020
Ref. Subject Science & Technology
Chapter -
Ref. Topic Renewable Energy
Pg. No -
💡 Analysis & Explanation
Fundamental Principles of Solar Power ▼
Photovoltaic solar panels fundamentally do one thing: they convert sunlight into direct electric current (DC). This generated electrical energy is entirely agnostic to the mechanical application it powers.
Pump Placement Versatility ▼
Since the electricity can be wired anywhere, it can just as easily power an electric motor located on the ground surface as it can power a sealed electric motor submerged deep within a borewell. Therefore, excluding submersible pumps is technically false. Statement 1 is incorrect.
Pump Mechanism Versatility ▼
The generated electricity drives a motor shaft. Whether that rotating shaft is connected to a spinning impeller (centrifugal pump) or a reciprocating mechanism (positive displacement/piston pump) makes no difference to the solar power source. Both types are widely manufactured as solar-compatible. Statement 2 is incorrect.
Conclusion ▼
Both statements rely on false technological limitations.
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