Screw Air Compressor

Which one of the following is an advantage of screw air compressor?

• Inexpensive.

• Simple construction.

• Large and continuous air flow.

• Repairs and maintenance are simpler.

The 'Male Rotor' is indicated by No.

• 1

• 2

• 3

• 4

The 'oil Separator' is indicated by No.

• 6

• 8

• 9

• 10

What is the purpose of item No. 8?

• To cool the air.

• To cool the oil.

• To compress the air.

• To lubricate the air.

Which item allows the oil to bypass the oil cooler if the oil temperature is cold?

• 2

• 6

• 9

• 10

The Airend's air inlet and outlet is indicated respectively by No.

• '1' and '2'

• '2' and '5'

• '6' and '11'

• '1' and '11'

The oil filter is indicated by No.

• 6

• 8

• 9

• 10

Identify the type of bearing shown.

• Ball bearing.

• Roller bearing.

• Needle bearing.

• Taper roller bearing.

What are the THREE purposes to inject oil into the screw air compressor airend ?

• To cool the temperature of the airend.

• To seal the clearance between rotors.

• To lubricate the rotor elements.

• To increase the speed of the compressor.

What type of lubrication method is used in the oil-flooded screw air compressor system?

• Manual method.

• Splash method.

• Force-feed method.

• Pressure difference method