Bennett Mechanical Comprehension Practice Test 2025 – The Complete All-in-One Guide to Exam Success!

In a hydraulic system, the component that multiplies force is hydraulic fluid. This is achieved through the principles of Pascal's law, which states that when pressure is applied to a confined fluid, it is transmitted undiminished in all directions. When force is applied at one point using a small piston, the pressure exerted on the fluid creates an equally distributed force that can be applied to a larger piston.

As the larger piston has a greater surface area, the force on it becomes significantly amplified compared to the initial input force. This mechanical advantage allows hydraulic systems to lift heavy weights or perform considerable work with relatively little effort, making them highly effective in various applications such as construction equipment, automotive lifts, and industrial machinery.

In contrast, the other components, such as mechanical levers, sprockets, and springs, operate based on different mechanical principles that do not directly relate to the force multiplication achieved through the hydraulic fluid's pressure transmission in a hydraulic system.