PAE(040325) - DOL Fluid Power Calculations

What is the input in a fluid power system?

• The force exerted by the system

• The force applied to the system

• The force lost due to friction

• The force created by gravity

What is the output force in a hydraulic system?

• The energy lost

• The force that performs work

• The amount of energy wasted

• The force that is ignored in calculations

If a hydraulic lift raises a car, what force is responsible for lifting?

• Gravity

• Output force

• Frictional force

• Elastic force

Which equation is used to determine force in a hydraulic system?

• A) F = m x a

• B) P = F x A

• C) F = P x A

• D) P = A / F

A pneumatic brake system applies 500,000 Pa to a brake pad with an area of 0.05 m². What is the force applied?

• 1,000 N

• 10,000 N

• 50,000 N

• 250,000 N

A hydraulic press applies 7,000 Pa to a metal plate with an area of 0.05 m². What is the force exerted?

• 35 N

• 350 N

• 3,500 N

• 70,000 N

What happens to pressure in a closed hydraulic system?

• It increases with height

• It remains constant throughout the system

• It disappears after a while

• It varies randomly

A small piston (0.04 m²) is pressed with 250 N of force. What is the pressure exerted on the fluid to push the larger piston?

• 250 Pa

• 6,250 Pa

• 5,000 Pa

• 12,500 Pa

In a hydraulic system, what happens if the output piston is 10 times larger than the input piston?

• The output force is 10 times greater

• The output force is the same

• The input force increases

• The system stops working

How do you calculate mechanical advantage in a hydraulic system?

• Input force ÷ Output force

• Output force ÷ Input force (Correct Answer)

• Area of the small piston ÷ Area of the large piston

• Pressure × Area