The centrifugal pump consists of three parts: 1) The Eye 2) Impeller 3) volute.

• A. Eye 2) Impeller 3) volute
• B. Casing 2) Piston 3) Cylinder
• C. Inlet 2) Outlet 3) Shaft
• D. Rotor 2) Stator 3) Impeller

Answer: (A)

The main idea tested is identifying the three core flow-path components of a centrifugal pump. In a centrifugal pump, water enters through the eye, which is the central inlet that feeds the rotating impeller. The impeller is the rotating element with blades that transfers energy to the fluid, speeding it up and increasing its pressure as it moves outward. The volute is the surrounding casing that collects the high-velocity fluid from the impeller and converts that velocity into pressure while guiding the flow toward the discharge.

This trio—eye, impeller, and volute—matches how a centrifugal pump handles fluid from entry to energy addition to discharge. Other groupings mix in parts associated with different pump types or with the motor driving the pump (like pistons, cylinders, rotors, stators) or focus on drive components (like shafts), which aren’t the primary sections describing the centrifugal pump’s flow path.