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Millwright Block 3 > Pneumatic Systems > Flashcards

Pneumatic Systems Flashcards

1
Q

What are the three times of commonly piping systems used?

A

Grid, decentralized , loop

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2
Q

What is the simplest system?

A

Grid

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3
Q

What is absolute temperature?

A

All molecular actions ceases zero degrees

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4
Q

What is the pressure at absolute pressure ?

A

O

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5
Q

How do you measure vacuum?

A

With an barometer

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6
Q

What is slope of an air line ?

A

1 inch over 10 feet

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7
Q

What is dew point?

A

When moisture drops out of suspension because of a rapid temperature

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8
Q

What is one of the biggest problems?

A

Moisture

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9
Q

What is a quick exhaust valve used for?

A

Quickly releasing pressure

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10
Q

When would you use a needle valve?

A

, When you want to control flow in both direction

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11
Q

How are check valves seated?

A

By gravity and spring

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12
Q

What does FRL stand for?

A

Filter regulator lubricant

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13
Q

Why is the order of FRL important ?

A

Not following those steps in order can cause wear/damage to equipment that is unnecessary

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14
Q

What is the two most common types of traps / drains?

A

Mechanical and electrical

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15
Q

How are compressors cooled?

A

Air , water and lubricant

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16
Q

What is isothermal?

A

When Heat is generated and removed at such a rate as to maintain a constant temperature

17
Q

What is adiabatic ?

A

No Heat is added or subtracted

18
Q

What does the air intake filter control?

A

Amount of airborne contaminants allowed to enter the Compressor

19
Q

How is an air receiver classified?

A

Unfired pressure vessel

20
Q

What are the two types of compressed air?

A

Instrument air
Plant air

21
Q

When you have higher pressure , you need more?

A

Cooling

22
Q

When you have more cooling, that can lead to?

A

More condensation and moisture

23
Q

What do air inlet filters do?

A

Protect compressor from atmosphere airborne particles

24
Q

What are some advantages of pneumatics ?

A

Smooth acceleration and deceleration
Non - toxic
Presents little to No explosive hazards
Serves as a ready of energy storage

25
Q

0 degrees kelvin = ?? degrees Celsius

A

-273. 15

26
Q

If Rakin is 0, what is the degrees in Fahrenheit?

A
  • 459.73F
27
Q

What are some disadvantages of pneumatic?

A

Compressed air is not cheap
Improperly maintained
Wastage can occur

28
Q

Define condensation

A

As the change in the state of water Vapor to liquid water in contact with any surface

29
Q

What is the purpose of a dryer in a pneumatic system?

A

Lower the dew point so that it does not cause problems in the system

30
Q

What is the purpose of a safety relief valve in a pneumatic system?

A

Bleed of excess system pressure

31
Q

What are two logical starting points when trouble shooting pneumatics?

A

Starting at the actuator
Working way through air supply

32
Q

What are pneumatic interlocks?

A

Prevent personal injury to operators as well as damage to machine,

33
Q

What is the five types of grouping elements?

A

Energy supply
Input elements
Processing elements
Control elements
Power components

34
Q

What are the three seal Types?

A

Piston
Rod
Rod wiper

35
Q

What motor prevents coasting and protects from being back driven?

A

Gerotor motor

36
Q

What valve increases speed of a cylinder?

A

Quick exhaust valve

37
Q

What piping system is subject to air starvation if upstream demand is high?

A

Grid system

38
Q

What is the difference between non-venting and venting?

A

Non-venting regulators cannot regulate pressures downstream above the pressure setting the valve.
Venting regulators can

Millwright Block 3 (11 decks)

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