Pneumatic Systems

Which of the following is NOT a function of pneumatic system on board?

• Chipping of paint

• Sounding of Ship Horn

• For actuation of valves

• Cooling of Main Engine

Which of the following is NOT a function of Air Receiver?

• Dry the compressed air

• Large surface cools the compressed air

• Provide constant air pressure in a pneumatic system regardless of fluctuating consumption

• Separates moisture from air

Why is it necessary to supplying dry compressed air to a remote operated pneumatic valve?

• Wet compressed air may cause malfunction of pneumatic equipment

• Wet compressed air contains sulphur

• Wet compressed air is a fire risk

• Wet compressed air temperature is too low

What does FRL stands for?

• Filter Rubberised Lubricator

• Filter Reference Lubricator

• Filter Regulator Lubricator

• Filter Reciprocating Lubricator

Which of the following is NOT a poor indication of poor compressed air condition?

• Rapid wear of moving parts in cylinders and valves

• Water drops forming in pipeline

• Fast speed of working elements

• Silencer of valves become dirty

Tags

NGSS.MS-PS3-3

Why is aluminum gaining popularity when choosing materials for pneumatic air system?

• It is non-reactive, good for sensitive air systems

• It is cheaper than steel

• It is heavier than steel

• It offers greater flexibility

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

How does a refrigerated dryer function?

• Cools the air containing moisture to condensate into liquid water which is the drained

• Desiccants in the dryer absorbs moisture from the compressed air flowing through

• Heats the air containing moisture, air is then filtered to remove moisture

• Compressed air is send through membranes which filters the air moisture away

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

How does a desiccant dryer function?

• Cools the air containing moisture to condensate into liquid water which is the drained

• Desiccants in the dryer absorbs moisture from the compressed air flowing through desiccant.

• Heats the air containing moisture, air is then filtered to remove moisture

• Compressed air is send through membranes which filters the air moisture away

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2