Refrigeration Quiz 1-200

If used, a defrost cycle generally occurs when the

• System is in normal operation

• System is stopped or on defrost cycle

• Demand for refrigeration is at a maximum

The frost line is not affected by the

• Charge in the system

• Superheat setting of the TX valve

• Solenoid valve

In a counterflow condenser, the

• warmest part of one fluid meets the warmest part of the other fluid

• warmest part of one fluid meets the coldest part of the other fluid

• automatic cooling water valve is installed on the outlet side of the condenser

A substance contains the most heat when it is in the

• gaseous state

• liquid state

• solid state

The refrigerant having the highest latent heat is

• R-22

• R-12

• ammonia

If an accumulator is used, it will be located in the

• low side

• high side

• rear bank of tubes

Oil will absorb refrigerant more readily when it is

• hot

• warm

• cold

The fusible plug shall be connected directly to

• the evaporator

• the pressure vessel

• anything on the system

The use of compressor high-pressure gas in the evaporator for the removal of frost is known as

• hot gas defrost

• leak testing

• direct defrost

An instrument that measures specific gravity is a

• psychrometer

• gravitational device

• hydrometer