Which type of devices could give a pressure reading of -0.5 bar?

• Flowmeter

• Start-up valve

• Pressure gauge

• Vacuum gauge

Pneumatic actuators are used to convert

• linear motion into rotational motion

• the energy stored in a pressurized fluid into electricity

• the energy stored in a pressurized fluid into motion

• rotational motion into linear motion

A safety relief valve is used to

• prevent air from flowing in a reverse direction.

• avoid excessive pressure build-up.

• control the pressure regulator.

• drain dirty water from an air receiver.

Compressors usually pump air into a.

• pneumatic motors

• pneumatic cylinders

• receivers

• atmosphere

Which of these symbols represents a vacuum generator?

• (a)

• (b)

• (c)

• (d)

Which of the symbols above represents a flowmeter?

• a

• b

• c

• d

Which of these pneumatic devices convert the energy of a pressurized fluid into motion?

• Motors

• Actuators

• Cylinders

• All of the above

• None of the above

What could be the purpose of an accumulator in a pneumatic system?

• Mitigate the effects of long tubing.

• Replace a portion of tubing.

• Create a vacuum.

• Reduce the number of manifolds required.

With the following circuit, an operator reads a flow rate A on the flowmeter. Select the relation that best describe the flow rate B indicated on the flowmeter if the operator extends the tubing length to 0.6 m (keeping the diameter the same).

• A < B

• A = B

• B = 0

• A > B

Which of these part lists could be used to build a basic cheese press?

• Air bearing, pushbutton, tubing, air supply

• Pneumatic motor, pushbutton, accumulator, tubing, safety valve

• Pushbutton, cylinder, tubing, air supply

• Tubing, air supply, pushbutton, vacuum generator, suction gripper