The sum of the pressure drop in a fluid power loop equals ___________.

The correct answer is that the sum of the pressure drop in a fluid power loop equals the supply pressure. In a fluid power system, the total pressure drop, which occurs as the fluid moves through various components such as pumps, valves, actuators, and piping, must equal the pressure provided by the pump (the supply pressure). This relationship is fundamental in fluid dynamics, as it ensures that the system operates efficiently and delivers the required force and motion.

As the fluid flows, energy is lost due to friction and turbulence, which translates into pressure drops across each component. The sum of these pressure losses should align with the initial pressure supplied by the pump to ensure that the system can function effectively. If the total pressure drop were less than the supply pressure, it would indicate that not all energy is being used efficiently, while a greater pressure drop would mean the system could face failure or underperformance due to insufficient pressure.

Understanding the pressure dynamics in a fluid power loop is critical for system design and troubleshooting, as it helps engineers ensure that the system will operate correctly under varying loads and conditions.