Partial preview of the text
Download Refrigeration Cycle Exam with Questions and Answers and more Exams Refrigeration and Air Conditioning in PDF only on Docsity!
20. Refrigerant is circulated through a refrigeration system by the action of what component? a. compressor b. condenser c¢. expansion valve d. evaporator ANSWER VV a 21. In the order of the direction of flow, the low pressure side of a refrigeration system is considered to exist between what two componcnts? a. expansion valve to the compressor b. receiver to the expansion coil c. expansion valve to the evaporator d. condenser to the expansion valve ANSWER VV a 28. The temperature of the refrigerant in the evaporator coil depends mostly upon what factor? a. refrigerant pressure in the evaporator b. cooling water temperature to the condenser c. heat load in the refrigerator compartment d. solenoid valve in the liquid line ANSWER VV a 29. In a vapor compression refrigeration cycle, the temperature of the liquid refrigerant experiences its greatest decrease flowing through what component? a. evaporator b. compressor ¢. expansion valve d. condenser ANSWER VV ¢ 35. In a typical refrigeration system, where is the temperature of the refrigerant gas at the highest? a. at the compressor discharge b. at the compressor suction c. in the expansion valve d. in the receiver ANSWER VV a 39. Refrigerant enters the condenser in what condition? a. high pressure liquid b. low pressure vapor c. high pressure vapor d. low pressure liquid ANSWER VV ¢ 40. In a vapor compression type refrigeration cycle, the refrigerant temperature decreases the most when passing through which system component? a. evaporator b. condenser receiver 45. Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions’? a. High pressure liquid b. [igh pressure vapor c. Low pressure vapor d. Low pressure liquid ANSWER VV ¢ 47, What would the pressure and physical state of the refrigerant residing in the system receiver? a. high pressure vapor on top of high pressure liquid b. high pressure liquid on top of high pressure vapor c. low pressure vapor on top of low pressure liquid d. low pressure liquid on top of low pressure vapor ANSWER JV a 1. In a small appliance using HFC-134a you would expect to see the greatest temperature drop across what system component? a. evaporator b. receiver c. compressor d. condenser ANSWER VV d 1. Ina small refrigeration appliance using HFC-134a you would expect to sce the greatest temperature drop across which system component? a. evaporator b. thermal expansion valve ¢. compressor d. receiver ANSWER VV b 13. The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as what? a. condenser b. vapor generator c¢. accumulator d. evaporator ANSWER VV d 14. Which of the following statements is correct concerning a typical shipboard multi-coil refrigeration system? a. The liquid receiver functions to collect and remove non-condensable gases. b. A thermostatic expansion valve is used to control refrigerated space temperature. c. Refrigerant temperature in an evaporator is directly related to refrigerant pressure. d. Dehydrators must be used continuously in a refrigeration system. ANSWER VV 15. Under normal conditions, the refrigerant enters the compressor in an operating refrigeration system in what condition and/or state? a. liquid b. dry saturated gas c. wet saturated gas d. superheated vapor ANSWER VV d c. Evaporator d. Compressor ANSWER VV d 
