Pneumatics Flashcards

1
Q

What is used to control a constant pressure in a pneumatic system?

A

A regulator

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2
Q

What type of screw compressor removes some heat during compression stage?

A

A wet screw

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3
Q

In a multi stage compressor what is the difference between pistons?

A

Low pressure pistons are larger in diameter

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4
Q

With the reading of 80 PSIA what is the PSI?

A

65.3 PSI ( Subtract 14.7)

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5
Q

What is atmospheric pressure?

A

14.7 PSIA

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6
Q

What is used to reduce line pressure in a pneumatic system?

A

A regulator

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7
Q

If you have water in a receiver what is the cause?

A

Faulty after cooler on the compressor

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8
Q

On a pneumatic dust conveyor what area would wear 1st?

A

Outside curves

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9
Q

If a vacuum cylinder has a leaking rod seal the following occurs…

A

Reduced retraction force

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10
Q

An equilateral triangle in a pneumatic drawing represents what?

A

Direction of fluid flow

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11
Q

Which type of compressor uses pistons driven by a crankshaft?

A

Reciprocating

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12
Q

Reciprocating, single-stage, multi-stage, single-acting: Which of these types of compressors is most efficient?

A

Multi stage

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13
Q

What is normal atmospheric pressure at sea level?

A

14.7 PSI

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14
Q

Where is the relief valve in a pneumatic system located?

A

On the receiver

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15
Q

“At a constant temperature, absolute pressure varies inversely to the volume” this refers to what?

A

Boyle’s law

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16
Q

Air pressure in the receiver frequently increases and decreases during operation. This is caused by?

A

Faulty on loading valve

17
Q

How is an inlet filter for compressor chosen?

A

Inlet requirements

18
Q

A receiver has changed in inlet pressure what does this affect?

A

Volumetric efficiency

19
Q

You have a 46 in³ container holding 23PSI. You transfer the air into a 17 in³ container what is the new pressure?

A

62.23 (use high over low method)

20
Q

A manometer measures what?

A

Pressure close to atmospheric