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Pneumatics > Pneumatics > Flashcards

Pneumatics Flashcards

1
Q

What are the 5 basic elements of a pneumatic circuit?

A
  • DCV
  • conductors
  • power source
  • pressure switch
  • actuator
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2
Q

What does a graphic symbol reveal about a fluid component?

A

The function

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3
Q

What is the purpose of unloader vlvs on a compressor

A

It allows the compressor to start with no load

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4
Q

What component in a circuit keeps constant pressure on the valve

A

Regulator

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5
Q

What components are in the trio unit

A

A filter, regulator and a lubricator

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6
Q

What is the largest malfunction in a pneumatic system?

A

Poor maintenance

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7
Q

A multistage compressor is designed to do what?

A

Compress air in stages for higher pressure

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8
Q

What air tank component tells the compressor to start and stop?

A

Pressure switch

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9
Q

What pneumatic component supplies a sufficient amount of air at a desired pressure?

A

Compressor

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10
Q

T or F

When hot air cools, it’s ability to carry water vapor decreases.

A

True

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11
Q

T or F
A single acting cylinder uses system pressure moving in a linear and reciprocating motion (forward and reverse direction).

A

False

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12
Q

T or F

A check valve is a directional control valve controlling a single flow path on or off.

A

True

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13
Q

T or F

A silencer can be installed to control noise of releasing air.

A

True

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14
Q

T or F

A regulator is a type of flow control valve that is normally closed.

A

False

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15
Q

T or F

A flow control valve uses metered flow out of actuator but not in.

A

True

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16
Q

T or F

A ball valve closes multiple flow paths.

A

False

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17
Q

T or F

Safety vlvs are normally closed vlvs.

A

True

18
Q

T or F

When working on a circuit, air pressure should not be relieved before.

A

False

19
Q

T or F

The working air pressure should be marked for operators.

A

True

20
Q

Piping that consists of central piping and small feeder lines.

A

Grid system

21
Q

Friction in a air system causes..?

A

Inefficiency

22
Q

why is polycarbonate used?

A

It’s strong and transparent

23
Q

After air goes through the cooler but before the receiver where does it go?

A

Dryer

24
Q

What can be installed to keep the piston clean?

A

Rod boot

25
Q

What component protects other components and removes particulate?

A

Air line filter

26
Q

What is the function of a lubricator?

A

Add oil drops, spray/mist to the air.

27
Q

If the air motor is required to operate in both directions, what DCV is required?

A

4 way, 2 position

28
Q

Which of the following is caused by an air line on the ground?

A

All of the above

29
Q

Which components are required by ASME to be installed on a receiver?

A

A safety valve

30
Q

What is the function of a pneumatic safety system?

A

It will not operate if there is an operator in the way as to not cause injury.

31
Q

What is the 1st task in troubleshooting an air system?

A

To know the normal operating characteristics

32
Q

Necessary heat loss, friction, fluid changing direction in a pneumatic system leads to?

A

Inefficiency

33
Q

A double acting cylinder requires?

A

A moveable element to drive in either direction

34
Q

If malfunctions are system wide, you should 1st investigate what?

A

The compressor, then the rest of the system.

35
Q

The most common flow control valve is?

A

The needle vlv with a bypass check

36
Q

In a pneumatic circuit the compressor does what?

A

Converts mechanical energy into potential energy

37
Q

If a compressor has saturated air what condition causes vapor to condense?

A

Decrease in temperature

And increase in specific volume

38
Q

In which compressor does the air get drawn in and chamber decreases as air compressed?

A

Reciprocating and slide vane

39
Q

In terms of a DCV, what electrical device consists of a plunger and a wire and a coil.

A

A solenoid operated DCV

40
Q

Large quantities of ____ can cause metal to rust and wash away.

A

Moisture

Pneumatics (1 decks)

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