HYDRAULIC AND PNEUMATIC - Quiz

1) Which unit supplies a fine mist of oil in pneumatic system?

Actuator Control valve Air service unit Pressure relief valve

2) What is the type of inner drive gear used in the internal gear oil pump?

Spur gear Spiral gear Rotor gear Helical gear

3) What is the reason for pneumatic brake failure?

Less pedal play More pedal play Defective unloader valve Defective front wheel slack adjuster

4) What is the effect if the unloader valve is in open position?

Release the air to the brake valve Allow the air in to the air tank Maintain the required air pressure Continuously allow the air to the atmosphere

5) Which valve is to be closed before lifting the load with hydraulic jack?

Relief valve Shut of valve Non return valve-1 Non return valve-2