A refrigeration system using R-404A has an evaporator pressure of 35 psig. What is the approximate evaporator saturation temperature?

Refrigeration System Quiz

Quiz
•
English
•
University
•
Hard

Laura McHugh
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-10°F
-5°F
0°F
All of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compressor is running at 1,800 RPM with a bore of 2.75 inches, a stroke of 4 inches, and has 4 cylinders. What is the total displacement per minute?
107,800 in³/min
85,500 in³/min
97,000 in³/min
All of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A refrigeration system with a capillary tube shows high superheat and low suction pressure. What could be the cause?
System undercharge
Capillary tube restriction
Low ambient temperature
All of the above
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compressor draws 7.2 kW and has a cooling capacity of 20,500 BTU/hr. What is the coefficient of performance (COP)?
2.1
2.8
3.5
All of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of a crankcase heater in a compressor?
To increase the compressor's efficiency
To prevent refrigerant migration
To cool the compressor
To reduce noise
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A refrigeration system has a discharge pressure of 275 psig and a suction pressure of 60 psig. What is the approximate compression ratio?
4.1:1
4.8:1
5.2:1
All of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A heat pump in heating mode has a condenser pressure of 340 psig using R-410A. What is the approximate condenser saturation temperature?
90°F
100°F
110°F
All of the above
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