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Unit 16

Authored by Timothy McIntyre

Professional Development

Professional Development

Used 5+ times

Unit 16
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ____ reacts to stop, start, or modulate the flow of water, air, or refrigerant to the system or conditioned space

controlled device
sensor
controller
none of the above

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All control systems can be subdivided into ____, no matter how many controls there are.

control loops
throttle loops
control segments
sensor segments

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

____ control systems were used before electronics.

Pneumatic
Manual
Digital
Mechanical

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pneumatic controls must have a permanent air supply that is ____.

clean and dry
warm and dry
clean and moist
clean and warm

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Most system compressors provide ____ psig of air pressure to the storage tank.

100 to 125
90 to 100
90 to 125
100 to 150

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In most system compressors, the compressors are controlled with a ____.

pressure switch
heat switch
limiter
governor

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ____ is either in the pressure reducer or in the downstream side of the system to ensure that the control air pressure does not exceed about 30 psig.

relief valve
blowback valve
pulldown valve
pressure valve

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