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EasyAssistant Engineer (Electrical), Class-2, Road and Building Department2025✓ Editorially verified
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Which type of pump is most commonly used for boosting water pressure in the water supply systems of tall buildings?

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Answer & Explanation
Correct AnswerC. Centrifugal pump

Quick Explanation

Centrifugal pumps are most commonly used in building booster systems because they provide smooth continuous flow, are available in multistage high-head configurations and work well with variable-speed pressure control.

Formula / Key Relation

Pump head requirement ≈ static head + friction losses + required residual pressure head

Detailed Explanation

Concept & Reasoning

Tall buildings require adequate pressure at upper floors despite static elevation and piping losses. Booster sets commonly use multiple centrifugal/multistage pumps, pressure sensors, VFDs and staged operation to maintain system pressure efficiently.

How to Solve It in the Exam

Building pressure booster → centrifugal/multistage centrifugal pump.

Important Exam Point

Submersible pumps are common for wells/sumps; booster duty is different.

Related Revision Path

This question sits in the revision path Building Electrical Services → Water Supply Systems → Pumps .

Centrifugal Booster Pump explanatory diagram

Quick Trick

Building pressure booster → centrifugal/multistage centrifugal pump.

Common Mistake

Choosing reciprocating pump despite pulsating flow and lower suitability for typical building booster service.

Exam Tip

Submersible pumps are common for wells/sumps; booster duty is different.

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Previous Exam Appearances

Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294
Assistant Engineer (Electrical), Class-2, Road and Building Department2025Q. 294

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