| Air entrained in the hydraulic fluid, or trapped in an actuator will cause the actuators to move with a jerky motion. This action is a result of __________ . |
| A) the trapped air being compressed to a pressure above the maximum pump discharge pressure, then re-expanding and lowering in pressure after the actuator moves |
| B) the cyclic expansion and contraction of air due to the motion of the actuator |
| C) air being capable of moving loads more effectively than a liquid |
| D) air providing better lubrication of internal components, found in Hydraulic Systems, than hydraulic fluids |
