Hydostatics Flashcards
At any point in a fluid the ____ is equal in all directions
+equation
Pressure
P1=P2=P3=P
For any static fluid, in which direction does the pressure vary
+explain
Z direction as the pressure increases with depth
What is gage pressure
Pressure measured relative to atmospheric pressure, can be <0
What is absolute pressure
+value of atmospheric
Pressure measured in kPa where atmospheric pressure is 101.3 kPa
What is the equation for pressure in a liquid with a free surface
p=p0+yh
What is the equation for transmission of pressure
+explain what this means
p=F1/A1=F2/A2
Therefore if A1»A2 then F2»F1 meaning that small changes in F1 will cause large changes in F2
What is a compressible fluid
A gas E.g. air, oxygen, nitrogen
What is a manometer and what are the three types
Manometer is a device to measure pressure using liquid columns
Piezometer
U-tube
Inclined tube
What is a bourdon pressure gage
A gage made of a plastic tube that straightens as the pressure increases which is then transferred to a dial.
What is a pressure transducer
A measurement device that converts pressure into electrical output via a thin elastic diaphragm which is in contact with the fluid.
What type of pressure does a bourdon pressure gage measure
Gage
