How Does a Pump Work? Principle, Centrifugal vs Positive Displacement, Cavitation and Efficiency!

How does a pump work and how does it move liquid against gravity and pressure? This detailed evergreen explanation covers the full operating principle of pumps, including how mechanical energy is converted into hydraulic energy, how pressure difference is created between inlet and outlet, and how head, flow rate and system resistance determine pump performance. Learn the difference between centrifugal pumps and positive displacement pumps, how impellers transfer kinetic energy to fluid, how fixed-volume displacement works, and why pump curves and the Best Efficiency Point are critical. The video also explains total dynamic head, friction losses in piping systems, Net Positive Suction Head (NPSH), and the cavitation phenomenon that can damage impellers. Real-world applications in residential systems, automotive cooling and fuel systems, and large industrial pumping installations are covered in detail. Perfect for students, engineers, technicians, and anyone interested in fluid mechanics and hydraulic systems. #pump #howpumpworks #centrifugalpump #positivedisplacementpump #fluidmechanics #hydraulics #cavitation #engineering #mechanicalengineering #evergreen