Three principles used in the operation of automated machinery are electrical, ______, and fluid power.

Three principles used in the operation of automated machinery are electrical, ______, and fluid power.

• A. Hydraulic
• B. Mechanical
• C. Pneumatic
• D. Thermal

Answer: (B)

Automated machinery relies on three ways energy and motion are produced: electrical control, fluid power, and mechanical motion. Electrical systems handle the control circuitry, sensors, and actuators that drive the system. Fluid power—hydraulic or pneumatic—uses pressurized fluid to generate force and motion at actuators. The missing piece is mechanical, which encompasses the physical components that actually convert energy into movement and transfer motion between parts—things like gears, belts, cams, linkages, and shafts. Hydraulic and pneumatic are examples of fluid power, so they aren’t the separate third principle. Thermal effects aren’t treated as a primary operating principle in these systems, since heat is usually a byproduct rather than a fundamental means of motion or force.

Automated machinery relies on three ways energy and motion are produced: electrical control, fluid power, and mechanical motion. Electrical systems handle the control circuitry, sensors, and actuators that drive the system. Fluid power—hydraulic or pneumatic—uses pressurized fluid to generate force and motion at actuators. The missing piece is mechanical, which encompasses the physical components that actually convert energy into movement and transfer motion between parts—things like gears, belts, cams, linkages, and shafts. Hydraulic and pneumatic are examples of fluid power, so they aren’t the separate third principle. Thermal effects aren’t treated as a primary operating principle in these systems, since heat is usually a byproduct rather than a fundamental means of motion or force.