What happens if the RPM of the electric motor in a fixed displacement pump is changed?

When the RPM of the electric motor driving a fixed displacement pump is changed, the output flow of the pump is directly affected. Fixed displacement pumps deliver a specific volume of fluid with each revolution of the pump. Therefore, if the RPM increases, the pump will produce a higher flow rate because more fluid is being moved per unit of time. Conversely, if the RPM decreases, the flow rate will be lower since fewer volumes of fluid are being displaced in the same time frame.

This relationship between motor speed and output flow is fundamental in understanding the operations of fluid power systems. Adjustments to the motor speed will lead to corresponding changes in the flow rate, which is why it's accurate to state that the output flow is altered with variations in RPM.