In a pump, which part is the rotating element that transfers energy to the fluid?

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Multiple Choice

In a pump, which part is the rotating element that transfers energy to the fluid?

Explanation:
The rotating element that transfers energy to the fluid is the impeller. As the impeller spins, its blades push and accelerate the fluid, converting mechanical energy from the motor into kinetic energy and pressure in the fluid, which creates flow through the pump. The pump casing, while it shapes and guides the flow, is stationary and does not add energy to the fluid. The disk isn’t a standard energy-adding component in a pump, and the packing gland serves as a seal around the shaft to prevent leakage, not to transfer energy to the fluid.

The rotating element that transfers energy to the fluid is the impeller. As the impeller spins, its blades push and accelerate the fluid, converting mechanical energy from the motor into kinetic energy and pressure in the fluid, which creates flow through the pump. The pump casing, while it shapes and guides the flow, is stationary and does not add energy to the fluid. The disk isn’t a standard energy-adding component in a pump, and the packing gland serves as a seal around the shaft to prevent leakage, not to transfer energy to the fluid.

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