Mechanical Refrigeration Cycle

Superheating will be found in which of the following locations?

• Discharge line

• Liquid line

• Suction line

• Expansion line

Tags

NGSS.HS-PS3-4

Small amounts of liquid returning to the compressor is called ___________?

• Flood back

• Flooded start

• Slugging

• Flooding compressor

Refrigerant changes from vapor to a liquid in which component?

• Liquid line

• Evaporator

• Suction line

• Condenser

Which of the following will cause the compressor work harder?

• High suction pressure

• Low suction pressure

• Low charge

• Low load

Tags

NGSS.HS-PS3-4

The area between the valve plate and the top of the piston at top dead center is _____?

• Discharge valve

• Suction valve

• Clearance volume

• Wrist pin

Which of the following is likely to cause washed bearings in a compressor?

• lack of lubrication

• Overheating

• Flooded start

• Open capacitor

Low charge can be seen in readings as _______?

• High superheat

• Low superheat

• High subcooling

Tags

NGSS.HS-PS3-4

High charge can be seen in readings as ______?

• High subcooling

• Low superheat

• High superheat

• Both a and b

Tags

NGSS.HS-PS3-4

High head pressure may be caused by ______?

• Low load

• Low charge

• Failed evaporator fan motor

• Debris in the condenser

A high evaporator TD will be reflected as ______?

• A cold box

• A warm box

• high Rh%

• low Rh%