Self-Test C-1.14: Define Mechanical Advantages as It Relates to Fluid Power
Complete Self-Test C-1.14 and check your answers.
- What would be the output force of a hydraulic press that has an MA of 70 and an input force of 140 N?
Answer: N
- If the small piston on a hydraulic jack has a diameter of 3 in., what is its area?
Answer: in.2
- What is the pressure in pounds per square inch if 100 pounds of force are applied to a hydraulic system’s piston with an area of 2 in.2?
Answer: psi
- What is the pressure in kPa if 700 N of force is applied to a hydraulic system’s piston with an area of 52 cm2?
Answer: kPa
- What is the force exerted by a hydraulic piston that has an area of 3 in.2 and a 50 psi fluid pressure?
Answer: lb.
- What is the force exerted by a hydraulic piston that has an area of 18 cm2 and a 411 kPa fluid pressure?
Answer: N
- If the small piston on a hydraulic lift has an area of 2 in.2 and 50 lb. of force are applied to it, what would the area of the larger piston have to be to produce 500 lb. of force?
Answer: in.2
- Complete the following table referring to a hydraulic jack. Show the required values and the proper units.
|
Small piston force |
Small piston diameter |
Small piston area |
Small piston travel distance |
Fluid pressure |
Large piston diameter |
Large piston area |
Large piston travel distance |
Force exerted by large piston |
Mechanical advantage |
|
25 lb. |
2.5 in. |
|
|
|
7.5 in. |
|
7 in. |
|
|
|
44 lb. |
3.7 in. |
|
14 in. |
|
|
73 in.2 |
|
|
|
|
78 lb. |
5.5 in. |
|
|
|
|
|
12 in. |
|
14 |
|
2,375 N |
8 cm |
|
1.8 m |
|
|
|
|
9,449 N |
|
|
1,850 N |
|
40 cm2 |
|
|
27.64 cm |
|
70 mm |
|
15 |
|
|
|
|
|
|
|
6,120 cm2 |
113 mm |
10,770 N |
34 |
Answer Key: Self-Test C-1.14 is on the other page.
