L2 C4 PNEUMATIC SYSTEM

What is pneumatic system?

• A system that uses compressed air to transmit and control energy to perform useful work

• A system that uses compressed air to control energy to perform useful work

• A system that uses air to transmit and control energy to perform useful work

Which is the correct statement about the pressure developed in the air compressor?

• The pressure generated is lower than atmosphere pressure.

• The pressure generated is depending on the temperature during the compression process

• The air from the atmosphere is reduced in volume by compression, thus increasing its pressure.

Pneumatic sytem is using ________ as a working medium.

• Oil

• Compressed air

• Water

Pneumatic system is preferred in food industry because  ______

• the cost is low

• it is using air as a medium which is available everywhere

• it is using unlubricated air which is clean

Picture below shows the ISO standard symbols for _______

• Flow control valve

• Directional control valve

• Pressure control valve

Why compressed air requires good preparation?

• So that pneumatic system is clean

• To protect the operator from dirt and dust

• To maximize performance and extend the life of the components doing the work in a pneumatic system

Name the component that is used to transform the potential energy of the compressed air into mechanical work.

• Actuator / cylinder

• Directional Control Valve

• Compressor

Symbol shown in figure below is a combination of ______________

• Air filter, regulator

• Air filter, regulator, check valve

• Regulator, lubricator

• Air filter, regulator, lubricator

Which of the following is the function of directional control valve, DCV?

• control flow of the air

• control the direction of the air

• control the speed of the air

• control the pressure of the air

Name the component shown in the figure above.

• one way flow control valve

• flow control valve

• shuttle valve

• AND valve