ANS:A - reciprocating

To handle smaller quantities of fluid at higher discharge pressures, a reciprocating pump is typically used. Here’s why:

• Reciprocating Pump: Reciprocating pumps are positive displacement pumps that operate by using a piston, plunger, or diaphragm to displace fluid in discrete volumes. They are capable of generating high pressures because they can develop high discharge pressures due to their ability to produce high head (pressure).
• Centrifugal Pump: Centrifugal pumps, on the other hand, are suitable for high flow rates but generally operate at lower discharge pressures compared to reciprocating pumps. They are not as effective at handling smaller quantities of fluid at high discharge pressures.
• Volute: A volute is a part of a centrifugal pump that converts kinetic energy to pressure energy. It is not a type of pump itself.
• Rotary Vacuum Pump: Rotary vacuum pumps are used to create vacuum or low pressures, not high discharge pressures.