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National Maritime CenterServing Our Nation’s MarinersU.S.C.G. Merchant Marine ExamQMEDQ803 Refrigerating Engineer(Sample Examination)8/19/2021Page 1 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 3Choose the best answer to the following Multiple Choice Questions:1.To prevent motor overload during start-up of a hermetically sealed centrifugal refrigeration system,what is true concerning the compressor suction gas variable inlet guide vanes?oo o(A) opened until the motor is connected across the line at full voltage and current drawn is belowfull load current(B) opened until the motor is connected across the line at full voltage and current drawn is up tofull load current(C) closed until the motor is connected across the line at full voltage and current drawn is belowfull load current(D) closed until the motor is connected across the line at full voltage and current drawn is up tofull load currentIf choice C is selected set score to 1.2.If the valve labeled "D" in the illustration is a suction service valve, what will the port labeled "7" beconnected to? Illustration RA-0008 ooo(A) to the line connected to the evaporator outlet(B) to the line connected to the evaporator inlet(C) to the outlet of the compressor(D) to the inlet of the compressorIf choice A is selected set score to 1.3.Refrigerant entering the compressor of a refrigeration system should be in which of the followingconditions? ooo(A) Low-pressure vapor(B) High-pressure liquid(C) High-pressure vapor(D) Low-pressure liquidIf choice A is selected set score to 1.4.The sorting of accident victims according to the severity of their injuries is called .ooo (A) surveying(B) prioritizing(C) evaluation(D) triageIf choice D is selected set score to 1.8/19/2021Page 2 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 35.When purging a refrigeration gage manifold using system pressure as the source of refrigerant forpurging, which of the fittings listed is normally tightened LAST?oo o(A) the low-pressure hose fitting at the gage manifold low-pressure connection(B) the high-pressure hose fitting at the gage manifold high-pressure connection(C) the low-pressure hose fitting at the suction service valve service port(D) the high-pressure hose fitting at the discharge service valve service portIf choice C is selected set score to 1.6.Which of the statements listed is applicable to the thermostatic expansion valve shown in theillustration? Illustration RA-0007oo o(A) It regulates the amount of superheat at the solenoid valve.(B) It regulates the temperature of the refrigerated space.(C) The control bulb is located on the evaporator coil outlet.(D) The external equalizing pipe is connected to the liquid receiver.If choice C is selected set score to 1.7.A definite advantage in the use of water as a fire extinguishing agent is its ability to .o oo(A) absorb smoke and gases as water is converted from liquid to vapor(B) vaporize and rapidly expand as water absorbs heat(C) rapidly contract as water is converted from a liquid to a vapor(D) alternate expansion and contraction as water in liquid state becomes vaporIf choice B is selected set score to 1.8.If a sea water-cooled shell-and-tube lubricating oil cooler has the sea water inlet and outletconnections on the opposite end waterboxes, in terms of the number of passes, what statement istrue?o oo(A) The tube-side fluid flow pattern is single-pass.(B) The number of fluid passes cannot be determined.(C) The tube-side fluid flow pattern is four-pass.(D) The tube-side fluid flow pattern is two-pass.If choice B is selected set score to 1.9.What could be the cause of water hammer in a steam heating system?o oo(A) filling the auxiliary boiler with cold water(B) steam admitted to a cold pipe(C) filling the auxiliary boiler with hot water(D) draining a sootblower line before cracking the steam supply valveIf choice B is selected set score to 1.8/19/2021Page 3 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 310. While fires are lit in a boiler, in terms of uptake dampers and air register doors, what conditions mustbe met? ooo(A) All uptake dampers should be locked open, all air register doors on lit burners should be wideopen or throttled, and all air register doors on idle burners should be closed.(B) All uptake dampers should be throttled according to the firing rate, all air register doors on litburners should be wide open, and all air register doors on idle burners should be closed.(C) All uptake dampers should be throttled according to the firing rate, all air register doors on litburners should be throttled according to the firing rate, and all air register doors on idle burnersshould be closed.(D) All uptake dampers should be locked open, all air register doors on lit burners should bethrottled according to the firing rate, and all air register doors on idle burners should be open.If choice A is selected set score to 1.11. To anneal a copper gasket, you should heat the gasket . ooo(A) cherry red and quench in water(B) and let cool slowly in the air(C) and quench it in oil(D) and carbonize itIf choice A is selected set score to 1.12. Your ship has run aground and it is necessary to determine whether or not a compartment hasflooded. Therefore, you should . ooo(A) tap the bulkhead with a hammer to check for a water level(B) open the watertight door and take a quick look(C) open the hatch dogs on the side away from the hinges(D) feel the bulkhead to see if it is hotIf choice A is selected set score to 1.13. Which of the following statements is true concerning the gauge labeled "A" of the illustrated gaugemanifold set? Illustration RA-0001ooo (A) The gauge labeled "A" is a standard pressure gauge and is usually color-coded red.(B) The gauge labeled "A" is a compound gauge and is usually color-coded red.(C) The gauge labeled "A" is a standard pressure gauge and is usually color-coded blue.(D) The gauge labeled "A" is a compound gauge and is usually color-coded blue.If choice D is selected set score to 1.8/19/2021Page 4 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 314. Under what circumstances could equipment be operated when tagged with DANGER tags?ooo (A) Whenever you feel that it is safe to do so.(B) Whenever permission is granted by your supervisor.(C) Whenever there is a break in the actual maintenance activity.(D) Never.If choice D is selected set score to 1.15. What must be done to use standard leak detection methods on a low-pressure refrigeration systemcharged with refrigerant?o oo(A) add nitrogen to the system(B) raise the pressure in the system above atmospheric(C) cool the refrigerant(D) lower the pressure in the system below atmosphericIf choice B is selected set score to 1.16. In what application is an emergency shutdown most likely to be located outside the machinery spacewhen the pump itself is located within the machinery space?oo o(A) Fire pump(B) Steering pump(C) Fuel oil transfer pump(D) Lube oil circulating pumpIf choice C is selected set score to 1.17. In general, the thermal bulb for a thermal expansion valve used in a reciprocating air conditioningsystem is usually charged with what substance?ooo (A) mercuric sulfate(B) bees wax(C) distilled water(D) the same refrigerant as the systemIf choice D is selected set score to 1.18. A dial indicator is used to measure .o oo(A) scribed layout lines on vertical surfaces(B) shaft eccentricity(C) positive readings only(D) torque of a shaftIf choice B is selected set score to 1.8/19/2021Page 5 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 319. When repairing a refrigeration system, a swaging tool set would be used to carry out which of thefollowing operations?o oo(A) Swaging tools are used to remove any sweated edges formed on the tubing while soldering.(B) Swaging tools can be used to expand an end of one tube to fit onto a tube of the sameoriginal outside diameter.(C) Swaging tools are used during the breaking-in of refrigeration compressors and drive motors.(D) Swaging tools are no longer used with repairing refrigeration systems due to progressivechanges in the tool industry.If choice B is selected set score to 1.20. When checking the oil level in a refrigeration compressor, under what conditions would the mostaccurate reading be obtained?oo o(A) immediately after start-up(B) after being shut down for 3 hours with the crankcase heater secured(C) several minutes after shutdown following a prolonged period of operation(D) immediately after adding oilIf choice C is selected set score to 1.21. To find the relative humidity of an accommodation space, you would use a .oo o(A) Enthalpy Chart(B) Entropy Chart(C) Psychrometric Chart(D) Mollier ChartIf choice C is selected set score to 1.22. A person has suffered a laceration of the arm. Severe bleeding has been controlled by using asterile dressing and direct pressure. Which of the following actions should be taken next?o oo(A) Administer fluids to assist the body in replacing the lost blood.(B) Apply a pressure bandage over the dressing.(C) Apply a tourniquet to prevent the bleeding from restarting.(D) Remove any small foreign matter and apply antiseptic.If choice B is selected set score to 1.23. In heavy seas the helmsman should steer the survival craft . ooo(A) into the seas(B) broadside to the seas(C) in the same direction as the seas(D) in a series of figure-eightsIf choice A is selected set score to 1.8/19/2021Page 6 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 324. What device on the bridge shows the rudder's position? ooo(A) rudder angle indicator(B) follow-up gear(C) telemotor position(D) Rapson slide indicatorIf choice A is selected set score to 1.25. Which of the following shoring materials is a portable beam designed to support a damagedstructure? ooo(A) Shore(B) Shole(C) Wedge(D) StrongbackIf choice A is selected set score to 1.26. Vapor bubbles present in the liquid upon arrival to the thermal expansion valve in a refrigerationsystem may cause erosion of the expansion valve's needle and seat. This, in turn, could cause whatcondition?oo o(A) TXV overheating(B) TXV freezing open(C) TXV hunting(D) TXV freezing shutIf choice C is selected set score to 1.27. Where will you find the procedures for the reporting of oil discharge into the water?o oo(A) The vessel's International Oil Pollution Prevention Certificate(B) The vessel's Oil Transfer Procedures(C) The vessel's Oil Record Book(D) The vessel's Certificate of InspectionIf choice B is selected set score to 1.28. During the initial cooling down of a box temperature in a refrigeration system, which of the deviceslisted is used to prevent excessive gas pressure at the compressor suction for the purpose ofprevention of overloading of the compressor driver?oo o(A) High-pressure cut-out(B) Low-pressure cut-out(C) Crankcase pressure regulator(D) Solenoid valveIf choice C is selected set score to 1.8/19/2021Page 7 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 329. Moisture entering a typical refrigeration system will most likely produce what effect?o oo(A) boil in the condenser(B) freeze in the expansion valve(C) cause sweating and frost on the evaporator coils(D) be removed by the liquid line strainersIf choice B is selected set score to 1.30. Moisture is removed from a refrigeration system by what action?o oo(A) opening a drain petcock on the oil separator(B) cutting in the dehydrator(C) draining refrigerant from the bottom of the condenser(D) condensing the water in the heat exchangerIf choice B is selected set score to 1.31. Which of the gasket types listed is typically used on high-pressure steam flange joints? ooo(A) Spiral wound metal gasket(B) Wire-impregnated rubber(C) High temperature neoprene(D) Wire-impregnated sheet plasticIf choice A is selected set score to 1.32. If you hear a continuous blast of the whistle for not less than 10 seconds supplemented by thecontinuous ringing of the general alarm bells for not less than 10 seconds, what does this indicate?oo o(A) Man overboard.(B) Dismissal from a boat drill.(C) Fire and emergency.(D) Abandon ship.If choice C is selected set score to 1.33. A "hygroscopic" lubricant used in refrigeration compressors would have what characteristic?o oo(A) losing its lubrication qualities at higher temperatures(B) having a high affinity for moisture which requires it to be kept in a sealed container(C) decreasing in viscosity at low temperatures(D) being highly toxicIf choice B is selected set score to 1.8/19/2021Page 8 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 334. When the compressed air reservoir is placed in line with an air compressor and is used as anaftercooler, what must be done with the reservoir? ooo(A) It must be frequently drained of condensed water.(B) It must be fitted with a sight glass.(C) It must be fitted with a manhole.(D) It must be fitted with a moisture trap at the inlet.If choice A is selected set score to 1.35. What statement below summarizes an engine lubricating oil's viscosity given as 20W-50?ooo (A) It is formulated for a metric weight of 20 milligrams at 50 deg F.(B) The "W" designates what the additives are that are added to this oil.(C) It is formulated for hot summer days when the cooling water temp is 50 deg F higher than theoil temperature.(D) It is formulated for both a low temperature and a high temperature based on viscositiesdetermined at 100 deg C.If choice D is selected set score to 1.36. If the refrigeration compressor crankcase is sweating or frosting and is operating with an unusualnoise, what is most likely the cause? ooo(A) liquid refrigerant returning to the compressor(B) a shortage of refrigerant(C) the compressor running continuously(D) the compressor short-cycling on the high-pressure cut-outIf choice A is selected set score to 1.37. In an air conditioning system, what is the name of the chamber where the duct-work originates?oo o(A) vapor chamber(B) intake chamber(C) plenum chamber(D) exhaust chamberIf choice C is selected set score to 1.8/19/2021Page 9 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 338. If the combination moisture indicator and sight glass indicates an accumulation of moisture within thesystem, which of the listed procedures would be the most practical to follow?oo o(A) Secure the system, disassemble and de-ice the thermostatic expansion valve.(B) Purge the entire system to the atmosphere, replace the drier cartridge, and recharge thesystem with refrigerant.(C) Close the king valve, pump down the system, isolate the drier, remove the desiccant core andreplace with new drier cartridge.(D) Using a vacuum pump, draw the entire system down to 1,270 microns for a period of threehours.If choice C is selected set score to 1.39. High concentrations of hydrogen sulfide gas are most dangerous to personnel because they can. ooo(A) paralyze your breathing system(B) cause involuntary skeletal muscle contractions(C) cause eye inflammation(D) cause dizzinessIf choice A is selected set score to 1.40. In a refrigeration system, the bulb for the thermal expansion valve is always located where?ooo (A) at the evaporator coil inlet(B) in the middle of the evaporator coils(C) at the beginning of the bottom row of the evaporator coils(D) at the evaporator coil outletIf choice D is selected set score to 1.41. If a refrigeration compressor using a thermostat as a primary controller is running continuouslywithout significantly lowering the temperature in the refrigerated space, which of the following is mostlikely the trouble? ooo(A) a shortage of refrigerant(B) a shortage of compressor oil(C) warm food in the refrigerator(D) excessive condenser cooling waterIf choice A is selected set score to 1.8/19/2021Page 10 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 342. Some "hot gas" defrost systems reheat the refrigerant just prior to its returning to the compressor forwhat purpose?oo o(A) to prevent chill shocking the compressor suction valves(B) to increase the circulation of liquid refrigerant(C) to prevent the damaging effects of liquid slugging(D) to improve the efficiency of the expansion valveIf choice C is selected set score to 1.43. Which of the installation steps listed is necessary for the proper operation of the thermostaticexpansion valve?o oo(A) Attach the thermal bulb to the suction line using plastic ties.(B) Clean off oxidation from the surface of the suction line and sensing bulb with fine abrasivecloth or steel wool.(C) Heat shrink insulating material around the device once the bulb has been properly secured.(D) Remove excess lengths of the sensing bulb capillary tube from the device to increasesensitivity.If choice B is selected set score to 1.44. A box solenoid valve used in a refrigeration system should be installed in what manner?ooo (A) with the axis of the solenoid horizontal, controlled by a thermostat sensing the temperature ofthe box, and upstream of the thermal expansion valve(B) upright, controlled by a thermostat sensing evaporator superheat, and upstream of thethermal expansion valve(C) upright, controlled by a thermostat sensing the temperature of the box, and downstream ofthe thermal expansion valve(D) upright, controlled by a thermostat sensing the temperature of the box, and upstream of thethermal expansion valveIf choice D is selected set score to 1.45. When welding or burning aboard a vessel, you must be certain that the space .ooo (A) is properly vented(B) contains no explosive fumes(C) has no oil or flammable material in the area(D) all of the aboveIf choice D is selected set score to 1.8/19/2021Page 11 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 346. An arrow stamped on the valve body of a water regulating valve indicates which of the following? ooo(A) direction of the flow(B) open position(C) direction of the plunger slide(D) closed positionIf choice A is selected set score to 1.47. According to 33 CFR, which type of Marine Sanitation Device (MSD) is used solely for the storage ofsewage and flushwater at ambient air pressure and temperature?oo o(A) Type I(B) Type II(C) Type III(D) Type IVIf choice C is selected set score to 1.48. When fighting a fire with a portable dry chemical extinguisher you should always .ooo (A) attack the fire from the leeward side(B) bounce the chemical onto the fire from adjacent structural members(C) spray the chemical across the tops of the flames(D) direct the stream of chemical toward the base of the fireIf choice D is selected set score to 1.49. If the discharge reed valves used in a refrigeration compressor are leaking badly, what statement istrue?ooo (A) the high-pressure cut-out setting should be lowered(B) the low side pressure will indicate below normal(C) the reed valves should be reground and relapped(D) the reed valves should be replacedIf choice D is selected set score to 1.50. What differentiates "system-dependent" and "self-contained" recovery devices in refrigerationsystems?oo o(A) self-contained recovery devices can only be used on large CFC and HCFC units(B) the system compressor must be working to use system-dependent devices, the systemcompressor may or may not be operational when self-contained devices are used(C) self-contained recovery devices usually contain a compressor, system-dependent recoverydevices do not(D) there is no difference between the devicesIf choice C is selected set score to 1.8/19/2021Page 12 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 351. Which of the following statements is true concerning carbon dioxide when used as a fireextinguishing agent?o oo(A) Carbon dioxide should be applied slowly to a large engine room fire.(B) Its smothering effect is excellent for class B fires.(C) Carbon dioxide is corrosive when exposed to fire.(D) Its total cooling effect is far greater than water.If choice B is selected set score to 1.52. If a condenser coil of an air-cooled container refrigeration system becomes dirty and requirescleaning, what would be an acceptable method of cleaning? ooo(A) high-pressure water wash(B) "Binks" gun with weak acid solvent(C) copper wire rotary brush(D) all of the aboveIf choice A is selected set score to 1.53. When securing the operation of an inert gas system, the final step should be . ooo(A) secure the salt water supply to the scrubber(B) close the flue gas isolating valve(C) secure the inert gas blower(D) close the deck isolating valveIf choice A is selected set score to 1.54. Personnel servicing refrigeration systems and subject to the exposure to commonly usedrefrigerants should wear what type of personal protective equipment? ooo(A) goggles and gloves(B) rubber soled shoes(C) a respirator(D) an all-purpose gas maskIf choice A is selected set score to 1.55. If the compressor is heard to knock while pumping down the low side for repairs, but otherwise thecompressor sounds normal, this is a possible indication of what condition?o oo(A) worn piston rings(B) foaming of the crankcase oil(C) faulty bearings(D) air being introduced to the systemIf choice B is selected set score to 1.8/19/2021Page 13 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 356. When opening or closing compressor service and line isolation valves on a typical refrigerationsystem that is fitted with packed valves, what must you do? ooo(A) you must first remove the stem seal cap(B) you should never loosen or tighten the packing gland(C) you should replace the gasket each time the valve position is changed(D) you should turn valves slowly to avoid thermal stresses due to low temperaturesIf choice A is selected set score to 1.57. In a refrigeration system, the push-pull technique can be used for the recovery of the refrigerant inwhat state? ooo(A) liquid only(B) vapor only(C) both liquid and vapor(D) should never be used with low-pressure systemsIf choice A is selected set score to 1.58. Concerning the charging of refrigerant into a vapor compression refrigerating system, which of thefollowing is true?ooo (A) when charging as a liquid it should be to the low side only(B) when charging as a vapor it should be directly to the receiver only(C) when charging as a liquid it may be to the low or high side(D) when charging as a liquid it should be to the high side onlyIf choice D is selected set score to 1.59. The component in an inert gas system used for cleaning the gas of solid and sulfur combustionproducts, while simultaneously cooling the inert gas, is called the .oo o(A) purifier(B) filter(C) scrubber(D) coolerIf choice C is selected set score to 1.60. Which of the following statements is true regarding oxygen indicators? ooo(A) Prolonged exposure to gases such as CO2 may affect the accuracy of the indicator.(B) The instrument is capable of providing an immediate accurate reading of any space with nodelay.(C) A cotton filter placed in the end of the sampling tube prevents damaging the instrument whenexposed to strongly acidic gases.(D) All of the above.If choice A is selected set score to 1.8/19/2021Page 14 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 361. Water applied as a "fog" can be more effective than water applied as a "solid stream", because.ooo (A) it reduces the total amount of water that must be pumped into the ship to fight a given fire(B) it does not have to hit the seat of fire to be effective(C) a given amount of water can absorb more heat when it is in the form of fog(D) all of the aboveIf choice D is selected set score to 1.62. To prevent oil from escaping into the sea when ballasting through the cargo piping system, youshould FIRST . ooo(A) start the cargo pump, then open sea suction valves(B) open block valves, then start the cargo pump(C) open sea suction valves, then start the cargo pump(D) open sluice valves, then start the cargo pumpIf choice A is selected set score to 1.63. What type of direct reading thermometer works on the principle of thermal volumetric expansion of aliquid as the temperature rises and features a linear scale?ooo (A) Bourdon tube thermometer(B) Thermocouple pyrometer(C) Bimetallic thermometer(D) Liquid-in-glass thermometerIf choice D is selected set score to 1.64. Refrigeration systems using forced air circulation evaporators have a tendency to cause rapiddehydration of produce in chill boxes. Which of the following will minimize this dehydration?oo o(A) the air is circulated rapidly over a small evaporator with a minimum temperature differential(B) the air is circulated rapidly over a small evaporator with a maximum temperature differential(C) the air is circulated slowly over a large evaporator with a minimum temperature differential(D) the air is circulated slowly over a large evaporator with a maximum temperature differentialIf choice C is selected set score to 1.65. If a life raft should capsize, .oo o(A) climb onto the bottom(B) swim away from the raft(C) right the raft using the righting straps(D) inflate the righting bagIf choice C is selected set score to 1.8/19/2021Page 15 of 19Q803 Refrigerating Engineer
Q803 Refrigerating EngineerU.S.C.G. Merchant Marine ExamQMEDIllustrations: 366. Under what conditions is a DANGER tag installed at equipment control stations in preparation forperforming maintenance or repairs?o oo(A) When operation of the equipment requires unusual caution to be exercised.(B) When operation of the equipment will endanger personnel OR harm the equipment.(C) When operation of the equipment will harm the equipment ONLY.(D) When operation of the equipment will endanger personnel ONLY.If choice B is selected set score to 1.67. When a refrigeration system is being topped off with a small amount of refrigerant through the lowside with the compressor running, what should be done?ooo (A) the refrigerant charging cylinder should be turned upside down(B) the discharge service valve must be front-seated(C) the suction service valve must be back-seated(D) the refrigerant should be charged into the system as a vaporIf choice D is selected set score to 1.68. The term "oil foaming" in refrigeration practice, is used to describe what event?ooo (A) sudden evaporation of entrapped air from the refrigerant liquid(B) release of dissolved lubricant from the refrigerant in the crankcase(C) sudden evaporation of entrapped moisture from the crankcase lubricant(D) release of miscible refrigerant from the lubricant in the crankcaseIf choice D is selected set score to 1.69. Heavy pressure on the ends of a file will cause the work surface to become .o oo(A) rough(B) rounded(C) smooth(D) taperedIf choice B is selected set score to 1.70. When testing the low pressure cut out switch, assuming the compressor is running, what should bedone to initiate the test?ooo (A) stop the compressor(B) secure the condenser(C) stop the circulating pump(D) close the compressor suction valveIf choice D is selected set score to 1.8/19/2021Page 16 of 19Q803 Refrigerating Engineer
National Maritime CenterServing Our Nation’s MarinersRA-00019/17/2018Adapted for testing purposes only from ALTHOUSE, ModernRefrigeration and Air ConditioningCopyright 1992 by The Goodheart-Willcox Company, Inc.Further reproduction prohibited without permissionPage 17 of 19Q803 Refrigerating Engineer
National Maritime CenterServing Our Nation’s MarinersRA-00079/17/2018Adapted for testing purposes only from ALTHOUSE, ModernRefrigeration and Air ConditioningCopyright 1992 by The Goodheart-Willcox Company, Inc.Further reproduction prohibited without permissionPage 18 of 19Q803 Refrigerating Engineer
National Maritime CenterServing Our Nation’s MarinersRA-00089/17/2018Adapted for testing purposes only from THERMO KING,Refrigeration Systems Maintenance ManualCopyright 1970 by Thermo King CorporationFurther reproduction prohibited without permissionPage 19 of 19Q803 Refrigerating Engineer
o (C) Swaging tools are used during the breaking-in of refrigeration compressors and drive motors. o (D) Swaging tools are no longer used with repairing refrigeration systems due to progressive changes in the tool industry. If choice B is selected set score to 1. 20.
