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Refrigeration machine operator

Refrigeration machine operator

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Unit 4 Review Test/ General Safety Practice Exam Questions and Answers

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    Unit 4 Review Test/ General Safety Practice Exam Questions and Answers

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    2024/2025
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  • An example of a pressure vessel is - Answer-A cylinder containing refrigernat for a refrigeration system If you were a technician about to service an air conditioning system using R-22 refrigerant and the temperature of the refrigerant in the cylinder in your truck was 105*F what would be the pressure of the refrigerant psig in the cylinder - Answer-210.8 A fusible plug is made from - Answer-A material with a low melting temperature When transferring refrigerant from a cylinder to a ref...
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Commercial Refrigeration Test Chapter 8, 9 Exam Questions and Answers

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    Commercial Refrigeration Test Chapter 8, 9 Exam Questions and Answers

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    septiembre 2024
    2024/2025
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  • How do you charge an R134a refrigerator with a cap tube system? - Answer-Weigh in the charge per the nameplate. What is the best thing to do before evacuating a refrigeration system? - Answer-Evacuate the gauge and pump connections to ensure all connections are tight. If a micron gauge is not working properly, what is the first thing to do to correct it? - Answer-Pour alcohol into the inlet port to clean oil out of it. In the "real world" how often is it practical to replace the oil i...
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Compression - Refrigeration System Operations Exam Questions and Answers

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    Compression - Refrigeration System Operations Exam Questions and Answers

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  • Why must you avoid running a refrigeration system below 14 kPa when pumping down - Answer-A slightly positive system pressure is required to prevent air infiltration This safety control device used on a centrifugal compressors allows the motor to be started unloading - Answer-Vane closed switch What is the purpose of the chilled water flow switch - Answer-Protects the chiller from freezing due to lack of waterflow Where can refrigeration system log sheets be obtained from - Answer-1. Re...
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B10C1(4) - CH126 Compression Refrigeration Pre-Start Up Procedures Exam Questions and Answers

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    B10C1(4) - CH126 Compression Refrigeration Pre-Start Up Procedures Exam Questions and Answers

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    2024/2025
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  • Ammonia leaks may be traced with a wetted test paper treated with: a. Caustic soda b. Potassium chromate indicating liquid c. Potassium iodide-iodate d. Litmus solution e. Sulphuric acid. - Answer-D A sulphur candle is a test for what: a. Freon leaks b. Ammonia leaks c. Air leaks d. Vacuum seal e. CFC leaks. - Answer-B Before charging a system which of the following needs to be done? a. The interlocks need to be tested b. The sequence of controls must be tested c. The co...
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EPA Version D34 Exam Questions and Answers

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    EPA Version D34 Exam Questions and Answers

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    2024/2025
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  • which of the following gases is used as the baseline measurement for global warming potential? - Answer-carbon dioxide how does the global warming potential of R-410A compare to carbon dioxide? - Answer-it is thousands of times greater how do the global warming potentials of isobutane (R-600a), propane (R-290_ and R-441A compare to the GWPs of HFC-134a, R-404A and R-410A? - Answer-they are significantly lower which of the following refrigerants is an HFO? - Answer-R-1234yf Which of t...
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Chapter 11 Foodservice Equipment Exam Questions and Answers

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    Chapter 11 Foodservice Equipment Exam Questions and Answers

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  • Receiving Table/Area - Answer-Place in a foodservice operation where employees weigh, inspect, and check delivered items Scales - Answer-Equipment in the receiving area that employees use to weigh items in order to confirm that what was ordered matches what is delivered. Utility Carts - Answer-Wheeled equipment used in the receiving area made of durable injection molding (plastic), molded shelving, or heavy steel and used to carry food cases to storage areas. Shelving - Answer-Equipment...
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NYC Refrigeration Exam Questions with Correct Answers

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    NYC Refrigeration Exam Questions with Correct Answers

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  • 132-picture of pump - Answer-90* reducing elbow, pump suction, pump casing, pump discharge, check valve. 133-picture of a compressor - Answer-Oil charging port allows for the addition and removal of oil from the compressor 134- A facility has failed to maintain water treatment to a refrigeration system. - Answer-Increase the condenser pressure 135-Which of these compressors is a non positive displacement type of compressor - Answer-Centrifugal 136-Where is emergency power not require...
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Trailer Refrigeration Exam Questions and Answers

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    Trailer Refrigeration Exam Questions and Answers

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    2024/2025
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  • Which of the following components is unique to reefer refrigeration operation? - Answer-Three-way valve Which of the following is correct concerning the defrost cycle? - Answer-All of the choices are correct. Which of the following are sources of heat that enter the refrigerated area of the trailer? - Answer-All of the choices are correct. Technician A says that controlling the direction of refrigerant flow essentially determines whether the reefer is in cooling or heating mode. Technic...
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Refrigeration Final Exam Questions and Answers

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    Refrigeration Final Exam Questions and Answers

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  • 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 wa...
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chapter 121 compression refrigeration system pre startup procedures Exam Questions and Answers

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    chapter 121 compression refrigeration system pre startup procedures Exam Questions and Answers

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  • Positive pressure testing of a new refrigeration system may be done: Using litmus paper. By filling the system with oxygen. By filling the system with ammonia. By filling the system with an inert gas. By filling the system with softened water. - Answer-by filling the system with an inert gas A sulphur candle is used to test for: Freon leaks Ammonia leaks Propane Vacuum seal CFC leaks - Answer-ammonia leaks Which of the following is NOT a problem asso...
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¿Sabías que, de media, un vendedor en Stuvia gana 76 euros al mes con la venta de recursos de estudio? Hmm, pista, pista.
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