ACR-202 Midterm

A low evaporator superheat indicates

• undercharge.

• system restriction.

• overcharge.

• dirt buildup.

Air-cooled condensers are much more efficient than water-cooled condensers.

• True

• False

Tags

NGSS.HS-PS3-4

What would be considered a higher-than-normal temperature for a discharge gas line on a reciprocating compressor?

• 190°F

• 215°F

• 250°F

• All of the above

What would be done to increase the compressor speed on a belt-driven compressor?

• Decrease drive pulley size

• Increase drive pulley size

• Increase driven pulley size

• Both A and C

At what speeds in rpm does a hermetic compressor normally turn?

• 1750

• 3450

• 4500

• Both A and B

What lubricates the refrigeration compressor?

• Refrigerant

• Moisture

• Desiccants

• Oil

A compressor can compress a liquid.

• True

• False

The process of removing heat from a place where it is not wanted and transferring that heat to a place where it makes little or no difference is known as ____.

• defrosting

• temperature balancing

• refrigeration

• cooling

Tags

NGSS.HS-PS3-4

The household refrigerator fresh-food compartment is a good example of ____ refrigeration.

• low-temperature

• average-temperature

• medium-temperature

• high-temperature

Tags

NGSS.HS-PS3-4

The household refrigerator fresh-food compartment typically ranges from ____.

• 32 to 40 F

• 28 to 40 F

• 25 TO 35 F

• 0 to 45 F