Refrigeration Final Exam Questions and
Answers
To temperature operation of a refrigeration system is necessary win - Answer-More than
one evaporator is used with one compressor
Which of the following is another type of low ambient temperature head pressure control
- Answer-Air volume control using shutters in fan cycling
____ are snap acting valves that open and close very fast with electrical energy to the
coil - Answer-Solenoid valves
The heat reclaim valve is a three way valve that is ____ operated - Answer-Pilot
______Type water cooler systems require less maintenance because they are
automatic in there dispensing of water - Answer-Pressure
The ____ is the only special part of the refrigeration system - Answer-Evaporator
Drinking water is called ____Water - Answer-Potable
Package ice machine store their own ice at ___ degrees Fahrenheit in a bin below the
ice maker - Answer-32
___Ice Cube machines usually have vertical evaporator plates with water flowing over
the individual cells - Answer-Cell-type
Many filter manufacturers use___ to inhibit calcium or lime scale build up - Answer-
Polyphosphate
most package ice machines are designed to be located in ambient temperatures of -
Answer-40°F to 115°F
Call plates are usually filled with - Answer-Brine solution sodium chloride or calcium
chloride eutectic
In some applications of truck refrigeration a liquid refrigerant is sprayed directly into the
box truck to maintain low temperatures - Answer-Nitrogen
The refrigerated cabinet temperature of a high temperature refrigeration unit ranges
from - Answer-45°F to 60°F
In a high temperature refrigeration unit the boiling point of the refrigerant in the coil is
normally____lower than the cabinet temperature - Answer-10°F to 20°F
Answers
To temperature operation of a refrigeration system is necessary win - Answer-More than
one evaporator is used with one compressor
Which of the following is another type of low ambient temperature head pressure control
- Answer-Air volume control using shutters in fan cycling
____ are snap acting valves that open and close very fast with electrical energy to the
coil - Answer-Solenoid valves
The heat reclaim valve is a three way valve that is ____ operated - Answer-Pilot
______Type water cooler systems require less maintenance because they are
automatic in there dispensing of water - Answer-Pressure
The ____ is the only special part of the refrigeration system - Answer-Evaporator
Drinking water is called ____Water - Answer-Potable
Package ice machine store their own ice at ___ degrees Fahrenheit in a bin below the
ice maker - Answer-32
___Ice Cube machines usually have vertical evaporator plates with water flowing over
the individual cells - Answer-Cell-type
Many filter manufacturers use___ to inhibit calcium or lime scale build up - Answer-
Polyphosphate
most package ice machines are designed to be located in ambient temperatures of -
Answer-40°F to 115°F
Call plates are usually filled with - Answer-Brine solution sodium chloride or calcium
chloride eutectic
In some applications of truck refrigeration a liquid refrigerant is sprayed directly into the
box truck to maintain low temperatures - Answer-Nitrogen
The refrigerated cabinet temperature of a high temperature refrigeration unit ranges
from - Answer-45°F to 60°F
In a high temperature refrigeration unit the boiling point of the refrigerant in the coil is
normally____lower than the cabinet temperature - Answer-10°F to 20°F
