CH 9 Test Materials & EXTRAS
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What are the components of both hydraulic and pneumatic fluid systems?
• a pump (sometimes including cylinders and pistons) forces fluids through a system • conductors (tubing, hoses, or pipes) provide a pathway to carry the fluid • valves keep the fluid moving in the desired direction at the desired time • a pressure gauge monitors pressure within the system
What is the formula for Pressure?
P= F (Force) A (Unit Area)
What is meant by “pressure” in a scientific sense? What units are used to measure pressure?
Pressure: The force per unit area Pressure is measured in pascals (Pa) and 1 Pa = 1 N/m².
The atmospheric pressure is the force exerted by the atmosphere. It decreases as you ascend due to less air pressing down. It is 100,000 times greater than the pressure caused by the object alone.