Hydraulic Systems Formulas

Question 1

Force =

Answer 1

Pressure × area

Question 2

Pressure =

Answer 2

Force ÷ area

Question 3

Force is expressed in

Answer 3

Newton’s (N) or
Pounds force ( LBF)

Question 4

Pressure is expressed in

Answer 4

Newton’s per square meter
( N/M 2)
in pounds (psi)
Or in bar

Question 5

1N/m2= how many pascals

Answer 5

1pa

Question 6

1 kilopascal (KPA) = how many pascals (PA)

Answer 6

1000

Question 7

1 bar = how many KPA
And how many psi

Answer 7

KPA =100
Psi = 14.5

Question 8

Atmospheric pressure = what psi or
Kpa or
Bar

Answer 8

Psi= 14.7
Kpa= 101.35
Bar = 1

Question 9

Work power energy is expressed in joules (j)or pounds force (ft-lbf) what = 1 joule or 1 lbf ( distance)

Answer 9

1 j = 1 n × 1m
1 ft lbf = 1lbf × 1 ft

Question 10

1 watt is what in newton’s

Answer 10

1 watt is 1 newton lifted 1 metere 1 second

Question 12

1hp =

Answer 12

33 000 pounds lifted 1 ft in 1 min

Question 13

1 hp = how many watts

Answer 13

746 watts

Question 15

1 imperial gallon = how many cu in

Answer 15

277 cu in

Question 16

One us gallon = how many cu in

Answer 16

231 cu in

Question 17

Velocity =

Answer 17

Distance ÷ time

Question 18

Cylinder force =

Answer 18

F=p×a
P=f÷a
A=f÷p

Question 19

Cylinder speed=

Answer 19

S=volume ÷a
V= s×a
A=v÷s