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Pneumatics > Pneumatics > Flashcards

Pneumatics Flashcards

1
Q

_____ _____ is the most important part of pneumatics.

A

Air preparation

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2
Q

Boxes are also known as what?

A

Envelopes

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3
Q

The inefficiency in a pneumatic system is generally the result of the necessary loss of what 3 things?

A

Heat during compression, friction and fluid changing direction.

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4
Q

Frictions causes what 2 things?

A

Drop in pressure and loss of energy

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5
Q

What is the purpose of a pressure switch?

A

Turns compressor on and off

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6
Q

What is normally closed not allowing air to flow freely?

A

Safety relief valve

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7
Q

What is normally open allowing air to flow freely?

A

Pressure regulator

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8
Q

What are used to describe components in pneumatic systems?

A

Symbols

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9
Q

What delivers sufficient amounts of air at a desired pressure?

A

Compressors

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10
Q

Compressors convert _____ energy into _____ energy.

A

Mechanical, potential

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11
Q

What is the most efficient type of compressor?

A

Multi-stage

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12
Q

What type of compressors have air drawn in as the chamber size increases and air pushed out as the chamber size decreases?

A

Reciprocating and sliding vane

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13
Q

What is used to start compressors under less torque?

A

Unloading

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14
Q

What depicts the function of fluid power components?

A

Schematic symbols

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15
Q

Air leaves the after cooler and goes to _____ prior to entering storage tanks.

A

Drier

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16
Q

ASME codes require a _____ _____ be installed on most units.

A

Safety valve

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17
Q

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

A

Decreases

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18
Q

If compressed air is saturated, what 2 conditions will cause some water vapor to condense?

A

Decrease in temperature or specific volume

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19
Q

_____ _____ consist of a central main with small feeder lines and heads, making them simple in construction.

A

Grid systems

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20
Q

Air flow may pass through a ____ _____ in one direction only.

A

Check valve

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21
Q

What kind of cylinder is moveable in only one direction?

A

Single acting cylinder

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22
Q

What kind of cylinder is moveable in either direction?

A

Double acting cylinder

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23
Q

Cushions absorb _____ energy.

A

Kinetic

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24
Q

5 basic elements of a fundamental pneumatic circuit:

A

Power source, pressure switch, conductor, DCV, actuator

25
Q

What does a graphic symbol reveal about a power component?

A

Components function

26
Q

The major cause of most malfunctions in a pneumatic circuit:

A

Poor maintenance

27
Q

Always relieve air pressure prior to _____.

A

Working

28
Q

Mark normal _____ _____ on a gauge.

A

operating pressure

29
Q

What keeps a piston clean?

A

Rod boot

30
Q

What is the first trouble shooting task?

A

Determine characteristics of the system

31
Q

What is the function of a pneumatic safety circuit?

A

To ensure the circuit doesn’t operate with operator in harms way.

32
Q

Where do you start if there is a problem with the pneumatic system?

A

Beginning at the compressor then work through the rest of the system

33
Q

Actuator

A

Actuates plug valve

34
Q

Conductors

A

Rubber hose and piping directing plant air

35
Q

Electrical conduit

A

Carries electrical signal and electricity to operate valve

36
Q

Float

A

Sends signal to control room sending signal to solenoid to open or close

37
Q

Flow control valve

A

Regulates speed of actuator

38
Q

Solenoid operated DCV

A

Controls direction of air for opening and closing actuator

39
Q

Trio unit

A

Filters, regulates air pressure and provides lube to components downstream

40
Q

A common application of a 4 ported, 4-way directional valve is to _____ _____ _____ of a cylinder.

A

Cause reversible motion

41
Q

When _____ _____ passes through the coil of wire, a _____ field is generated. This _____ field tracts the plunger and pulls it into the coil.

A

Electrical current; magnetic; magnetic

42
Q

A _____ valve has a flow path which is almost straight through its center.

A

Ball

43
Q

A ball valve does/does not offer more than one direction of flow.

A

Does not

44
Q

The most common type of flow control valve found in a pneumatic system is the _____ valve with bypass check.

A

Needle

45
Q

T/F A flow control valve uses metered flow out of an actuator to control speed and allow flow into it.

A

True

46
Q

T/F A silencer can be installed on the exhaust ports of an actuator to reduce the noise and oil content.

A

True

47
Q

A good silencer should have _____ resistance to flow, provide sound attenuation, and be _____ resistant.

A

Low; corrosion

48
Q

What maintains constant pressure at the actuator?

A

Pressure regulator

49
Q

An ____ ____ filter is a device that is placed in the air line at the work station to be protected.

A

Air line

50
Q

In small/large quantities, moisture can wash away lubrication and in any quantity, will cause ____ to form.

A

Large; rust

51
Q

_____ bowls are good because they are transparent and tough.

A

Polycarbonate

52
Q

Add _____ drops, mist or spray into air stream.

A

Oil

53
Q
A

Float

54
Q
A

Electrical conduit

55
Q
A

Conductor

56
Q
A

Actuator

57
Q
A

Trio Unit

58
Q
A

Solenoid operated DCV

59
Q
A

Flow control valve

Pneumatics (1 decks)

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