PPH ch7.1 part 1

Write your full name, please!

The main objective of air distribution system is to provide a distribution channel for compressed air without any leak and keep the pressure drop within permissible limits.

• True

• False

A typical air distribution system consists of ___, water cooled aftercooler, air receiver, drier and ring main system.

• pressure gauge

• compressor

• valve

• filter

The pipework in distribution air system should be given a fall of about ___ in the direction of flow.

• 3% - 4%

• 2% - 3%

• 1% - 2%

• 0% - 1%

The system must have adequate drainage using ___ drain trap.

• manual

• automatic

• semi automatic

The joining service line from the main ring line should be ___.

• parallel

• crossed

• junctional

• looped

It separate out water droplets by making them impinge on metal plates which are in their path, i.e., the air direction change rapidly in a short distance.

What is this definition for?

• filter separator

• centrifugal filter

• coarse filter

• depth filter

Atmospheric air contains many harmful impurities and needs treatment before it can be used. Choose all the correct types of impurities:

• atmospheric dirt

• mercury

• carbon dioxide

• oil

• water vapour

What is used to remove particles which can damage the air compressor?

• air intake filter

• filter separator

• primary air treatment

• secondary air treatment

There is the need to dry the air to reduce humidity and lower the dew point. This is normally performed between the compressor and the receiver, what is this process called?

• air intake filter

• filter separator

• primary air treatment

• secondary air treatment