Eaton Ch. 2 Flashcards
A hydraulic device which uses the impact or kinetic energy in the liquid to transmit power is called a
Hydrodynamic device
When the device is operated by a force applied to a confined liquid, it is called a
Hydrostatic device
The tendency to cause flow ( or the push ) may be supplied by a ……
Mechanical pump or simply the weight of the fluid
Pressure at the bottom of the tank that is caused by a fluid is called
Pressure head
What is the pressure of atmosphere
14.7 psia
What is the pressure at the top of the mercury barometer
0 psi
Conversion of PISA to PSIG and vise-versa
Psia - 14.7 = Psig
Psig + 14.7 = Psia
Which ways can you measure the flow of a fluid
Velocity and flow rate
1 GPM is equal to….
231 in(cubed) / minute
What is indicated when you have a difference of pressure on 2 different gauges pulled from different sides of a laminar flowing pipe
Flow
When dealing with system pressure what needs to be taken into consideration
Pressure required to move the oil mass and any friction needed to be overcome
Ideally when the particles of a fluid move through a pipe, they will move in straight parallel flow paths. This is called
Laminar flow
What is caused by abrupt changes in direction, cross section, or by too high velocity
Turbulent flow
Hydraulic fluid in a working system contains energy in what two forms
Kinetic and potential
What must be constant if the kinetic energy is constant and the pressure energy at various points in the system are constant
The flow rate
