RETA
Latest uploads at RETA. Looking for notes at RETA? We have lots of notes, study guides and study notes available for your school.
-
74
- 0
-
7
All courses for RETA
-
RETA 74
Latest content RETA
RETA INDUSTRIAL REFRIGERATION BOOK 2 
EXAM COMPREHENSIVE QUESTIONS WITH 
MULTIPLE CHOICES |VERIFIED & REVISED 
ANSWERS 
Which of the following factors listed below does not affect heat transfer? 
(pg. 1-2) 
A) Temperature Difference 
B) Surface Area 
C) Thermal Conductivity 
D) Density - D) Density 
An example of a poor conductor of heat is? (pg. 1-3) 
A) Aluminum Tubing 
©morren 2025/2026. Year published 2026. 
B) Schedule 40 Steel Pipe 
C) Wood 
D) Water - C) Wood 
Thermal con...
- Exam (elaborations)
- • 128 pages's •
-
RETA•RETA
Preview 4 out of 128 pages
Getting your document ready...
RETA INDUSTRIAL REFRIGERATION BOOK 2 
EXAM COMPREHENSIVE QUESTIONS WITH 
MULTIPLE CHOICES |VERIFIED & REVISED 
ANSWERS 
Which of the following factors listed below does not affect heat transfer? 
(pg. 1-2) 
A) Temperature Difference 
B) Surface Area 
C) Thermal Conductivity 
D) Density - D) Density 
An example of a poor conductor of heat is? (pg. 1-3) 
A) Aluminum Tubing 
©morren 2025/2026. Year published 2026. 
B) Schedule 40 Steel Pipe 
C) Wood 
D) Water - C) Wood 
Thermal con...
D312 A&P1 With LAB StudyGuide Section 1 Newest 
2025/2026 / D312 A&P 1 With LAB 
Study Guide Section 1 Practice Exam With 
Complete Questions And 100%Correct Detailed Answers 
|Already Graded A+|Newest Version!!
- Exam (elaborations)
- • 7 pages's •
-
RETA•RETA
Preview 2 out of 7 pages
Getting your document ready...
D312 A&P1 With LAB StudyGuide Section 1 Newest 
2025/2026 / D312 A&P 1 With LAB 
Study Guide Section 1 Practice Exam With 
Complete Questions And 100%Correct Detailed Answers 
|Already Graded A+|Newest Version!!
RETA CARO Exam Newest 2025/2026 / RETA CARO 
Preparation / Questions And 100Correct Detailed Answers 
|Already Graded A+|Brand New Version!!
- Exam (elaborations)
- • 13 pages's •
-
RETA•RETA
Preview 2 out of 13 pages
Getting your document ready...
RETA CARO Exam Newest 2025/2026 / RETA CARO 
Preparation / Questions And 100Correct Detailed Answers 
|Already Graded A+|Brand New Version!!
RETA CARO EXAM QUESTIONS WITH 100% VERIFIED ANSWERS 
Which refrigerant has the highest mass flow requirement at the same evaporator and condensing temperature? 
CFC-12 
 
 
which refrigerant is the first to be phased out by Montreal Protocol 
CFC-12 
 
 
As the ratio between the evaporator and condensing pressure increases 
the theoretical discharge temperature increases 
 
 
Under the Montreal Protocol 
as long as a technician does not perform work on the refrigerant containing portions of a sy...
- Exam (elaborations)
- • 2 pages's •
-
Reta•Reta
Preview 1 out of 2 pages
Getting your document ready...
RETA CARO EXAM QUESTIONS WITH 100% VERIFIED ANSWERS 
Which refrigerant has the highest mass flow requirement at the same evaporator and condensing temperature? 
CFC-12 
 
 
which refrigerant is the first to be phased out by Montreal Protocol 
CFC-12 
 
 
As the ratio between the evaporator and condensing pressure increases 
the theoretical discharge temperature increases 
 
 
Under the Montreal Protocol 
as long as a technician does not perform work on the refrigerant containing portions of a sy...
RETA CARO Exam Questions With Answers 
What is the purpose of a refrigeration system? 
To maintain a temperature 
 
 
Operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the areas of required knowledge for this to be possible? 
Basic physical principles, interpretation of information from temperature and pressure gauges, basic operating principles. 
 
 
Mechanical refrigeration is a series of steps that: 
Moves heat energy from a spac...
- Exam (elaborations)
- • 2 pages's •
-
Reta•Reta
Preview 1 out of 2 pages
Getting your document ready...
RETA CARO Exam Questions With Answers 
What is the purpose of a refrigeration system? 
To maintain a temperature 
 
 
Operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the areas of required knowledge for this to be possible? 
Basic physical principles, interpretation of information from temperature and pressure gauges, basic operating principles. 
 
 
Mechanical refrigeration is a series of steps that: 
Moves heat energy from a spac...
RETA CARO Chapter 2 Exam With Complete Solutions 
Four required components of a mechanical refrigeration system 
Expansion device, evaporator, compressor, condenser 
 
 
Purpose of the Expansion Device 
1) To separate the high pressure side of the system and the low pressure side of the system 
2) Responsible for metering the proper amount of liquid into the evaporator 
 
 
Flash Gas 
The vapor that results from the expansion process (no practical cooling is done by this item) 
 
 
Purpose of Ev...
- Exam (elaborations)
- • 2 pages's •
-
Reta•Reta
Preview 1 out of 2 pages
Getting your document ready...
RETA CARO Chapter 2 Exam With Complete Solutions 
Four required components of a mechanical refrigeration system 
Expansion device, evaporator, compressor, condenser 
 
 
Purpose of the Expansion Device 
1) To separate the high pressure side of the system and the low pressure side of the system 
2) Responsible for metering the proper amount of liquid into the evaporator 
 
 
Flash Gas 
The vapor that results from the expansion process (no practical cooling is done by this item) 
 
 
Purpose of Ev...
RETA CARO Chapter 1 Exam Questions With Verified Solutions 
Purpose of a Refrigeration System 
Achieve or maintain proper temperatures in a refrigeration process used for cooling/freezing applications 
 
 
Ton of Refrigeration 
Rate BTUs transfer per unit time 
288,000 BTUs/24 Hours 
12,000 BTUs/12 Hours 
200 BTUs/1 Minute 
 
rate of refrigeration or cooling 
 
 
Pressure 
Force per unit area. 
 
 
PSIA 
Absolute pressure; measures pressure from zero pressure 
 
 
PSIG 
Gauge pressure, uses atmo...
- Exam (elaborations)
- • 3 pages's •
-
Reta•Reta
Preview 1 out of 3 pages
Getting your document ready...
RETA CARO Chapter 1 Exam Questions With Verified Solutions 
Purpose of a Refrigeration System 
Achieve or maintain proper temperatures in a refrigeration process used for cooling/freezing applications 
 
 
Ton of Refrigeration 
Rate BTUs transfer per unit time 
288,000 BTUs/24 Hours 
12,000 BTUs/12 Hours 
200 BTUs/1 Minute 
 
rate of refrigeration or cooling 
 
 
Pressure 
Force per unit area. 
 
 
PSIA 
Absolute pressure; measures pressure from zero pressure 
 
 
PSIG 
Gauge pressure, uses atmo...
Reta Caro Study Guide JH Exam Questions With Verified Solutions 
Which is equal to 22 Psig? 
36.7 Psia 
 
 
What is the Latent Heat of Vaporization?(H2O) 
970 Btu's 
 
 
What product requires the most energy to lower 1 lb. by 1 degree? 
water 
 
 
What happens when pressure on a liquid is increased? 
Boiling point goes up/Saturation temp. goes up 
 
 
What happens when vapor is Superheated? 
Temperature above saturated/it gains sensible heat 0.5x1 degree F 
 
 
What causes heat to move from one...
- Exam (elaborations)
- • 9 pages's •
-
Reta•Reta
Preview 2 out of 9 pages
Getting your document ready...
Reta Caro Study Guide JH Exam Questions With Verified Solutions 
Which is equal to 22 Psig? 
36.7 Psia 
 
 
What is the Latent Heat of Vaporization?(H2O) 
970 Btu's 
 
 
What product requires the most energy to lower 1 lb. by 1 degree? 
water 
 
 
What happens when pressure on a liquid is increased? 
Boiling point goes up/Saturation temp. goes up 
 
 
What happens when vapor is Superheated? 
Temperature above saturated/it gains sensible heat 0.5x1 degree F 
 
 
What causes heat to move from one...
Reta Test 1 Exam With Verified Solutions 
what does temperature indicate 
intensity of heat energy in an object 
 
 
what is required to move heat from one object to another 
temperature difference 
 
 
which of these is required to obtain a valid reading from a pressure temperature chart 
the refrigerant must be in a saturated condition 
 
 
which of these is an essential component of a mechanical refrigeration system 
expansion device 
 
 
what is a function of a compressor in a mechanical re...
- Exam (elaborations)
- • 4 pages's •
-
Reta•Reta
Preview 1 out of 4 pages
Getting your document ready...
Reta Test 1 Exam With Verified Solutions 
what does temperature indicate 
intensity of heat energy in an object 
 
 
what is required to move heat from one object to another 
temperature difference 
 
 
which of these is required to obtain a valid reading from a pressure temperature chart 
the refrigerant must be in a saturated condition 
 
 
which of these is an essential component of a mechanical refrigeration system 
expansion device 
 
 
what is a function of a compressor in a mechanical re...
RETA CARO EXAM QUESTIONS WITH 100% VERIFIED ANSWERS 
Which refrigerant has the highest mass flow requirement at the same evaporator and condensing temperature? 
CFC-12 
 
 
which refrigerant is the first to be phased out by Montreal Protocol 
CFC-12 
 
 
As the ratio between the evaporator and condensing pressure increases 
the theoretical discharge temperature increases 
 
 
Under the Montreal Protocol 
as long as a technician does not perform work on the refrigerant containing portions of a sy...
- Exam (elaborations)
- • 2 pages's •
-
Reta•Reta
Preview 1 out of 2 pages
Getting your document ready...
RETA CARO EXAM QUESTIONS WITH 100% VERIFIED ANSWERS 
Which refrigerant has the highest mass flow requirement at the same evaporator and condensing temperature? 
CFC-12 
 
 
which refrigerant is the first to be phased out by Montreal Protocol 
CFC-12 
 
 
As the ratio between the evaporator and condensing pressure increases 
the theoretical discharge temperature increases 
 
 
Under the Montreal Protocol 
as long as a technician does not perform work on the refrigerant containing portions of a sy...