Civil Engineering - UPSC Civil Service Exam Questions - Discussion


A high efficiency pump is required for low discharge, high head and low maintenance cost. Delivery of water need not be continuous. The pump need not run at high speed. Which one of the following is the correct choice ?

[A]. Centrifugal pump
[B]. Reciprocating pump
[C]. Air lift pump
[D]. Hydraulic ram

Answer: Option B


No answer description available for this question.

Strike Wala said: (Sep 20, 2015)  
Reciprocating pump is a positive displacement pump. The given pump is single acting single cylinder pump with air vessel. It can be used for less discharge at higher heads. Priming is not required because it is a positive displacement pump.

Reciprocating pumps are used in pumping water in hilly areas. Reciprocating pumps has lower efficiency compared to centrifugal pumps.

Mani Bhushan said: (May 17, 2016)  
High head low discharge - reciprocating pump.

High discharge low head - centrifugal pump.

Asaithambi said: (Dec 13, 2016)  
Hydraulic ram pump = no energy, high-level point to low-level point water discharge.

Air left pump = low suction head, moderate discharge and enter solids, pump injection bottom compressed air producing with discharge involved.

Vaibhav said: (Feb 15, 2017)  
D) hydraulic ram - low cost, high efficiency, low discharge.

Sudhanshu said: (May 17, 2020)  
The reciprocating pump has high efficiency,
Also, k/a positive displacement pump has high head low discharge.

Siddhaji Sakre said: (Sep 15, 2020)  
Low cost & high efficiency.

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