Question
Download Solution PDFConsider the below statements with respect to hydraulic pumps and identify the correct option.
Assertion (A): Reciprocating pumps are used for lifting oils from deep wells, as it can build up very high pressure.
Reason (R): Discharge capacity of a reciprocating pump is much greater than that of a centrifugal pump.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation
The hydraulic machines which convert the mechanical energy into hydraulic energy are called pumps.
| Centrifugal pumps | Reciprocating pumps |
| The discharge is continuous and smooth | The discharge is fluctuating and pulsating |
| It can handle a large quantity (Discharge) of liquid | It handles a small quantity (Discharge) of liquid only |
| It can be used for lifting highly viscous liquids | It is used only for lifting pure or less viscous liquids like lifting oils from deep wells |
| It is used for large discharge through smaller heads | It is meant for a small discharge and high heads |
| Cost of a centrifugal pump is less as compared to reciprocating pump | Cost of a reciprocating pump is approximately four times the cost of a centrifugal pump |
| Centrifugal pump runs at high speed. They can be coupled to an electric motor | It runs at low speed.Speed is limited due to consideration of separation and cavitation. |
| The operation of a centrifugal pump is smooth and without much noise. The maintenance cost is low | The operation of a reciprocating pump is complicated and with much noise. The maintenance cost is high. |
| It requires a smaller floor area and installation cost is low | It requires a larger floor area and installation cost is high |
| Efficiency is low | Efficiency is high |
Last updated on May 28, 2025
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