Pneumatics
True or false
Pneumatics is faster than hydraulics
False
True or false
Hydraulics has better control than pneumatics
True
What is the calculation for psi
p=f/a
A pressure gauge reads 50 PSI.
What is the absolute pressure?
64.7
What is the difference between pressure and flow?
pressure determines force
flow determines speed
What is the primary purpose of a pneumatic control valve?
A. To control the pressure, flow, or direction of compressed air
What is the primary purpose of a directional control valve in a hydraulic system?
To control the direction in which hydraulic fluid flows
What is pascals law
When you push fluid trapped in a closed space, the push spreads evenly through the whole fluid
A tank has an absolute pressure of 100 PSIA.
What is its gauge pressure?
85.3
What is the purpose of a hydraulic pump
to create flow
Which component is primarily responsible for producing compressed air for a pneumatic system?
Compressor
How does a simple relief valve control pressure
A Bypass path
What does PSI stand for
pounds per square inch
Convert 5 bar to PSI
72.5
Name four "Stats" that are compared between Hydraulics and Pneumatics
Compressibility, STR, Speed, Control, Cleanliness, Control
What does a pneumatic motor convert compressed-air energy into?
Mechanical work
A hydraulic circuit contains a pump, directional control valve, and double-acting cylinder. What component controls which direction the cylinder moves?
B. Directional control valve
What is compressed air?
Regular air forced into a smaller volume by a compressor
A hydraulic motor receives a 55lb-ft at 2,200 RPM and produces 2,200 PSI at 9GPM
What is the efficiency?
50.1
What kind of compressor is similar to a pump in hydraulics
Vane
What powers a pneumatics motor?
Compressed air
Your main hydraulic system operates at 2000 PSI
but a particular component only needs 1000PSI.
What could you use?
Pressure reducing valve
What is a priority flow divider?
Priority circuit gets flow first
Convert 6 bar to atm.
5.92
Which statement is most accurate?
A. Pressure is related to the force available, while flow is related to the speed of an actuator.
B. Pressure determines the color of hydraulic fluid, while flow determines its temperature.
C. Pressure and flow are exactly the same thing.
D. Flow determines the maximum force of a cylinder regardless of pressure.
A. Pressure is related to the force available, while flow is related to the speed of an actuator.