What happens to the pressure if the pump is rotated at higher RPM?

When the pump is rotated at higher RPM (revolutions per minute), the pressure in the system typically increases. This occurs because the pump is able to move a greater volume of fluid in a given amount of time, enhancing the energy imparted to the fluid. As the speed of rotation increases, the kinetic energy of the fluid also increases, translating into higher pressure within the discharge of the pump.

The mechanics behind this relationship is rooted in the principles of fluid dynamics. A pump's capacity to generate pressure is largely influenced by its design and the speed at which it operates. As the RPM increases, the flow rate also tends to increase, and under most circumstances, this results in an increase in pressure, provided the system does not reach a point of cavitation or other operational limitations.

With regard to the other options, decreasing pressure would imply a loss of energy in the system, which does not align with the physics of pump operation at increased speeds. Pressure stabilizing suggests that there is no change in the system, which is not typical under direct variations in pump speed. Lastly, pressure fluctuations may occur during certain operational conditions or instabilities, but this is generally not the primary result of simply increasing RPM consistently in a well-operating pump system designed for