Fluid power leverage describes which concept?

• A. A very small force input can generate a very large force output
• B. A very large input force yields an even larger output
• C. Pressure alone determines speed
• D. Flow controls temperature

Answer: (C)

Fluid power leverage is about how hydraulic systems can multiply force using pressure and different piston areas. When you apply a force on a small input piston, the fluid transmits the pressure to a larger output piston. Since output force equals pressure times the output area, a larger output piston can produce a much bigger force than the input. This is the essence of leverage in fluid power: a small input force can become a larger output force because of the area ratio, assuming the same pressure.

Speed, meanwhile, comes from how much fluid is moved per unit time (the flow rate) into the cylinder. Pressure determines how much force is available, but not how fast the piston moves; the velocity is governed by the flow rate relative to the piston area. So saying that pressure alone determines speed isn’t accurate for fluid power leverage. The key concept is force amplification via pressure and piston area, not speed control by pressure.