Q514 - Motor Plants, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. In accordance with 46 CFR Subchapter F, steel tubing connections and fittings used with diesel fuel oil systems are to be either flared or __________.Not learned 2. The device shown in the illustration is a __________Not learned 3. Before any work is done on a burner in an automatically fired auxiliary boiler, you should always __________.Not learned 4. A safety valve on an auxiliary boiler simmers constantly and cannot be stopped by several quick blow-offs using the hand-relieving gear. The problem may be __________.Not learned 5. A variable capacity, pressure atomizing, fuel oil burner functions to __________.Not learned 6. When preparing to light off a cold boiler equipped with a return flow fuel oil system, the recirculating valve directs the flow of oil __________.Not learned 7. Which of the following statements describes how the fuel oil enters the whirling chambers of the sprayer plates used in an auxiliary boiler return flow fuel oil system?Not learned 8. If the bowl of a disk-type centrifugal purifier when operated as a separator is not primed, the __________.Not learned 9. Poor combustion in a diesel engine can be caused by __________.Not learned 10. On a diesel-propelled vessel operating with constant slip what is the effect on fuel consumption with an increase in shaft RPM?Not learned 11. Which of the listed design features is most common with a two-stroke cycle, low-speed main propulsion diesel engine?Not learned 12. Air scavenging of the cylinder shown in the illustration begins between figures __________Not learned 13. When is fuel injected into a cylinder of diesel engines?Not learned 14. Which of the following statements concerning the factors affecting ignition delay is correct?Not learned 15. For a given fuel, a change in the compression ratio will affect the ignition lag by which of the listed means?Not learned 16. The rate of pressure rise during the period following fuel ignition in a diesel engine is influenced by the length of the ignition delay period. What else will influence the pressure rise?Not learned 17. The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the __________.Not learned 18. The purpose of an oil mist detector in a main propulsion diesel engine is to warn of __________.Not learned 19. If a crankcase explosion due to a hot spot were to occur, the size of the explosion is dependent on which of the following?Not learned 20. Which of the following oil mist to air ratios would most likely lead to the most severe crankcase explosion?Not learned 21. In the event of a crankcase rich oil mist to air mixture explosion, where the doors are blown off the engine, which of the following may occur after the initial explosion?Not learned 22. After stopping a diesel engine with a high main bearing temperature, what is the time one needs to wait before a diesel engine crankcase can be opened?Not learned 23. Which of the following is one of the ways to prevent a scavenging fire on a slow-speed diesel engine?Not learned 24. Oil in a scavenging air space on a slow-speed diesel engine can be ignited by which of the following?Not learned 25. Which of the following would indicate a scavenging air fire in a slow-speed diesel engine?Not learned 26. Why are some diesel engine cylinder liners plated on the wearing surface with porous chromium?Not learned 27. The lower water seal on a diesel engine wet cylinder liner must allow for liner axial movement. This seal is most commonly a __________.Not learned 28. One advantage of a vacuum feed sight glass indicator used on cylinder lubricators over the discharge side liquid filled type sight glass is __________.Not learned 29. Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are __________.Not learned 30. The rate of cylinder lubricating oil metered to each cylinder of a large, low-speed, main propulsion diesel engine is __________.Not learned 31. Which statement about diesel engine combustion is true?Not learned 32. The ring lands on a large, low-speed, main propulsion diesel engine piston may crack due to __________.Not learned 33. Ring groove inserts are occasionally used on aluminum alloy pistons to __________.Not learned 34. In an auxiliary diesel engine, one reason for knurling the piston skirt is to __________.Not learned 35. According to the illustration, which of the following is trueNot learned 36. The service life of a worn aluminum piston for an auxiliary diesel, for which no spares are readily available, can be extended by __________.Not learned 37. In an internal combustion engine, which of the devices listed will force the compression rings to seal the compression gases in the space above the piston?Not learned 38. Low compression pressure in a diesel engine can be caused by __________.Not learned 39. Piston cooling fins are located __________.Not learned 40. Trunk type diesel engine pistons are effectively cooled when heat is __________.Not learned 41. The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to __________.Not learned 42. One method of determining crankshaft misalignment is by __________.Not learned 43. High-speed, multi-cylinder, diesel engines commonly use counterweights placed opposite to the crankpins to __________.Not learned 44. Worn main bearings will cause the compression ratio of a diesel engine to __________.Not learned 45. A bronze bearing liner with a lead-tin flashing has a milky-white color over most of its surface and some areas of exposed bronze. The white coloring indicates __________.Not learned 46. The valve cam slope angle determines the __________.Not learned 47. When two cams of the same diameter, one with tangential flanks and the other with convex flanks are compared, the cam with tangential flanks will cause___________.Not learned 48. The intake and exhaust valves used in a diesel engine are returned to their seats by __________.Not learned 49. If there is a 'clicking' sound in the valve compartment of a diesel engine, the cause may be __________.Not learned 50. Bouncing of the valve gear in a diesel engine can be caused by __________.Not learned 51. In a four-stroke cycle diesel engine, badly worn intake valve guides can cause excessive __________.Not learned 52. Worn diesel engine intake valve guides can result in __________.Not learned 53. When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will be indicated?Not learned 54. In diesel engines, hydraulic valve lifters are used to __________.Not learned 55. When a naturally aspirated four-stroke/cycle diesel engine is converted for supercharging, which of the following changes must be made to the valve timing?Not learned 56. The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by __________.Not learned 57. In the illustrated auxiliary diesel engine governor, decreasing the distance between piece 6 and piece 10 will affect the engine by __________Not learned 58. Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at __________.Not learned 59. A large change in ambient temperature or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the __________.Not learned 60. The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to __________.Not learned 61. If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will __________.Not learned 62. If the speeder spring of a main propulsion diesel engine governor breaks while operating at full load, the engine RPM will _________.Not learned 63. The hunting of a diesel engine may be caused by __________.Not learned 64. A diesel-generator governor is hunting. After changing the oil, the governor is flushed and the compensation needle valve is adjusted, but the hunting persists. You should NOW __________.Not learned 65. Governor hunting is caused by __________.Not learned 66. If the operating speed of a diesel engine increases without an apparent change in the engine control settings, you may suspect a __________.Not learned 67. The overspeed trip installed on most diesel engines will stop the engine by shutting off the __________.Not learned 68. The device shown in the illustration is used to secure the air supply to a diesel engine when the engine overspeeds. In order for this to occur, supplied oil pressure must __________Not learned 69. A diesel engine overspeeds and fails to restart when cranked at normal speed. Which of the following problems is the most likely cause for the engine failing to restart?Not learned 70. Which of the operating positions, for valve "A" shown in the illustration, should be chosen to maintain the circuit in continuous flow, regardless of failure to the included downstream componentsNot learned 71. Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?Not learned 72. You are onboard a vessel with a slow-speed crosshead type engine. The fuel just received has a significantly lower sulfur content than the previous bunkers. Which of the following would be a concern due to the reduced sulfur content?Not learned 73. In accordance with 46 CFR Subchapter F, diesel fuel oil system valves for removing water or impurities are __________.Not learned 74. An immediate repair is required if a leak occurs in the high-pressure fuel piping between the injection pump and fuel nozzle because of the __________.Not learned 75. Problems with the diesel engine fuel injection pump are usually caused by __________.Not learned 76. Which of the following problems is the main source of fuel pump and injection system malfunctions?Not learned 77. Differential needle valves used in fuel injectors are directly closed by __________.Not learned 78. Carbon deposit build up on the injection nozzle orifice is least likely to occur when using which type of fuel injector nozzle?Not learned 79. The amount of fuel delivered by a unit injector is controlled by the __________.Not learned 80. You are testing a closed fuel injection nozzle using a nozzle tester. A pressure slightly less than design valve opening pressure is applied. If no fuel appears at the spray tip, the __________.Not learned 81. Which of the fuel nozzles listed requires the LEAST maintenance?Not learned 82. The principal hazard to personnel when using a diesel engine fuel nozzle tester is _______.Not learned 83. Heat damage to fuel injection nozzles can be prevented by avoiding __________.Not learned 84. Faulty operation of diesel engine fuel injection nozzles can be a direct result of __________.Not learned 85. What is the purpose of the "window" installed in the housing of an individual jerk pump?Not learned 86. As shown in the illustration of the fuel injection pump, the component labeled "N" would be identified as the __________Not learned 87. When disassembling or assembling an injection pump plunger and barrel you should _________.Not learned 88. Surface irregularities, such as erosion and pitting on injection pump plungers, will __________.Not learned 89. Because of the close tolerances used in diesel engine fuel oil pumps, a worn plunger requires __________.Not learned 90. Uneven bolt tightening during the installation of a fuel injection pump can result in __________.Not learned 91. Injection lag in a diesel engine may be caused by __________.Not learned 92. Fuel combustion in a diesel engine cylinder should begin just before the piston reaches top dead center and should __________.Not learned 93. The time between injection and ignition of the fuel is known as __________.Not learned 94. High cylinder firing pressure, accompanied by low exhaust temperature, can result from __________.Not learned 95. High firing pressures and a low exhaust temperature in a diesel engine may result from __________.Not learned 96. One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to __________.Not learned 97. A 'Blotter test' is a test performed on the lube oil of a diesel engine which can determine ______.Not learned 98. Which of the following test indicators should be considered the most significant factor in determining as to whether or not a diesel-generator's lube oil should be drained and renewed?Not learned 99. Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because __________.Not learned 100. If the analysis of used lube oil indicates a high content of iron particles, this could indicate __________.Not learned 101. A decrease in the flash point of diesel engine lube oil indicates the lube oil has become __________.Not learned 102. What could cause the bypass valve in a full flow lubrication system to open?Not learned 103. Lube oil in the fresh water cooling system of a diesel engine may result from a __________.Not learned 104. What type of engine lubrication oil filter system sends filtered oil directly to the high-pressure supply gallery?Not learned 105. A dirty lube oil strainer can result in __________.Not learned 106. The temperature of the contaminated fuel oil fed to the centrifuge shown in the illustration should be __________Not learned 107. When tightening the lock ring "G" of the device shown in the illustration, two events are simultaneously accomplished. Which of the following statements represents these eventsNot learned 108. Using the graph shown in the illustration, the oil being separated has a specific gravity of 0.87 kg/dm3 at 72.5°C. What will be the specific gravity if the temperature is lowered to 40°CNot learned 109. From the graph shown in the illustration, if the separating temperature required is to be 167°F, and the specific gravity of the oil is 0.98 kg/dm3 at 59°F, what size regulating ring is requiredNot learned 110. Which of the following conditions would be the most probable cause for the 'low oil temperature after preheater' LED indicators, as shown in the illustration, to be illuminatedNot learned 111. Telescopic pipes which are attached to water cooled pistons of large, slow-speed, main propulsion diesel engines are designed to ________.Not learned 112. Which of the following devices will increase the power output of a diesel engine without increasing its frictional load?Not learned 113. Which of the following conditions is indicated by the presence of water in the scavenging air receiver?Not learned 114. Clearance volume scavenging in a turbocharged, four-stroke cycle diesel engine is accomplished __________.Not learned 115. Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the __________.Not learned 116. In a two-stroke cycle diesel engine, a Roots-type blower is usually __________.Not learned 117. The item labeled "T" as shown in figure 4 of the illustration is identified as the __________Not learned 118. Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation by using the __________.Not learned 119. Which of the turbocharging methods listed directs the exhaust gases to the turbine at fairly uniform velocity and pressure?Not learned 120. In a turbocharger, inlet air velocity is increased in the __________.Not learned 121. Which of the following precautions should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?Not learned 122. Following the failure of one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which of the following actions should be taken prior to further operation of the engine?Not learned 123. A sudden power loss from a turbocharged and aftercooled diesel engine is an indication of a/an __________.Not learned 124. Which of the following procedures should be carried out to permit the continued operation of a crosshead engine with a leaky aftercooler?Not learned 125. Which condition indicates the air side fouling of an aftercooler on a turbocharged diesel engine?Not learned 126. Oil accumulating in the exhaust piping or manifold of a diesel engine can be caused by __________.Not learned 127. High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by __________.Not learned 128. If a diesel engine were running at 20% overload with a smoky exhaust, you should __________.Not learned 129. Casing drains may be required on a waste heat boiler gas passage side to __________.Not learned 130. In general, diesel engine waste heat boiler construction is usually of the _________.Not learned 131. The purpose of designing some waste heat boilers with sinuous fire tubes, is to __________.Not learned 132. An exhaust gas bypass is installed on a waste heat boiler in order to __________.Not learned 133. The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust __________.Not learned 134. With which of the following types of diesel engine arrangements is a waste heat boiler most likely to produce the maximum steam pressure, temperature, and flow conditions?Not learned 135. Waste heat boilers may be equipped with vents on the feed water heater heads to __________.Not learned 136. The gauge glass on a coil-type auxiliary boiler is connected to the __________.Not learned 137. Which of the following statements concerning fire-tube boilers is correct?Not learned 138. Downcomers installed on auxiliary package boilers are protected from direct contact with hot gases by __________.Not learned 139. Constant capacity, pressure atomizing, fuel burners designed to meet a wide variation in steaming loads on a boiler, are __________.Not learned 140. Heavy soot accumulations in an auxiliary boiler could be caused by __________.Not learned 141. A feed pump for an auxiliary boiler might lose suction if the __________.Not learned 142. If a tube ruptures in a water-tube auxiliary boiler due to low water, you should ___________.Not learned 143. Which of the listed problems will happen when the water level of a fire-tube type auxiliary boiler approaches the crown sheet?Not learned 144. Why should the main steam stop valve of an auxiliary boiler be eased off its seat and then gently closed before lighting off?Not learned 145. When checking for the presence of sulfite in the feed water of an auxiliary boiler, you are in essence checking __________.Not learned 146. In the event of a flame failure in an auxiliary water-tube boiler, you must __________.Not learned 147. A burner producing black smoke in an automatic auxiliary boiler, would be caused by a/an __________.Not learned 148. Which of the following types of feedwater regulators is commonly used with a water-tube, natural circulation, auxiliary boiler?Not learned 149. When the steam pressure drops below a set value on an automatically fired auxiliary boiler fitted with rotary cup atomizers, the combustion control system will __________.Not learned 150. The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________.Not learned 151. The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent what condition?Not learned 152. During unsafe firing conditions in a large automatic auxiliary boiler, various control actuators are interlocked with the burner circuit to prevent start-up, in addition to safety shutdown. These controls are referred to as __________.Not learned 153. The pressuretrol which is installed on an auxiliary boiler senses steam pressure changes and __________.Not learned 154. Which of the automatic boiler controls listed should be tested prior to lighting off an auxiliary boiler?Not learned 155. Burner ignition failure in an automatically fired auxiliary boiler would be caused by __________.Not learned 156. Direct reversible main propulsion diesel engines would normally be fitted with a/an __________.Not learned 157. Which of the couplings listed is normally not repairable, and is usually replaced if completely damaged?Not learned 158. Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or __________.Not learned 159. When an additional load is applied to a diesel engine which is using an inadequately inflated air bladder clutch unit, you can expect __________.Not learned 160. In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________.Not learned 161. The reversing cams of some four-stroke cycle diesel engines are brought into position by __________.Not learned 162. Which of the following statements is true concerning the air starting valve, labeled "III", as shown in the illustrationNot learned 163. In a medium-speed marine propulsion engine equipped with direct admission air starting valves, the cylinders without air starting valves fire first because the __________.Not learned 164. Which internal combustion engine starting system uses a vane type fluid motor?Not learned 165. Intercoolers installed on starting air compressors, reduce the possibility of __________.Not learned 166. Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?Not learned 167. Hydraulic starters are installed on many lifeboat diesel engines instead of comparable air start systems, because __________.Not learned 168. Before any auxiliary diesel engine hydraulic starting system is opened for servicing or repair, you must __________.Not learned 169. The pinion of an auxiliary diesel-electric starting motor normally engages the flywheel ring gear by means of a/an __________.Not learned 170. In a Bendix starter drive, the pinion engagement with the flywheel ring gear is initiated by __________.Not learned 171. Which of the following operating characteristics of the Bendix drive friction clutch is associated with a Bendix drive starter?Not learned 172. Which of the following effects will excessively cold lube oil have on the operation of a diesel engine?Not learned 173. When inspecting pistons, liners, and rings of a large two-stroke/cycle diesel engine through the cylinder ports, a wet piston crown would indicate a __________.Not learned 174. Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?Not learned 175. The most practical way of detecting an overload in one cylinder of an operating large, low-speed, main propulsion diesel engine is to __________.Not learned 176. If an auxiliary diesel engine equipped with an electric starting system cranks very slowly after repeated attempts to start, the cause could be a/an __________.Not learned 177. On small diesel engines, a noticeable decrease in the time interval between the replacement of the lube filter cartridge indicates __________.Not learned 178. One cause of diesel engine surging can be a result of __________.Not learned 179. During main engine performance testing it is noticed that the firing pressure of one cylinder is higher than the average, but cylinder compression pressure is normal. Which of the following would most likely be the cause?Not learned 180. During main engine performance testing it is noticed that one cylinder has firing and compression pressures lower than average. Which of the following would most likely be the cause?Not learned 181. During main engine performance testing it is noticed that the firing pressure in one cylinder is lower than the average, but cylinder compression pressure and fuel pump delivery rate are normal. Which of the following would most likely be the cause?Not learned 182. Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?Not learned 183. What is the best way of stopping an overspeeding diesel engine?Not learned 184. The boiler shown in the illustration would be classed as __________Not learned 185. As shown in the illustration, the component labeled "N" would be identified as a ________Not learned 186. In accordance with 46 CFR Subchapter F, what device is used as a safety feature for the unit shown in the illustrationNot learned 187. In accordance with 46 CFR Subchapter J, which of the listed starting aids is acceptable for use with the emergency diesel-generator?Not learned 188. According to the illustration, which of the following is trueNot learned 189. According to the illustration, initial timing of fuel injection into the cylinder is controlled with the component that is identified as the letter _________Not learned 190. When analyzing indicator card diagrams you are calculating the work output from the cylinder by obtaining the area within the curve of what type of diagram?Not learned 191. The area indicated by the letter "W", shown in the illustration is correctly termed the __________Not learned 192. In the auxiliary diesel engine, shown in the illustration, the __________Not learned 193. While bunkering heavy fuel, what quick/easy test can one perform onboard to determine the compatibility of 'old' with 'new' fuel?Not learned 194. Catalytic fines comprised of aluminum oxide and/or silicon dioxide are a common contaminant of residual fuels. Which diesel engine components would be most affected by catalytic fines in fuel?Not learned 195. What will cause valve stem blow-by to the valve section shown in the ONot learned 196. During the change over period from residual to distillate fuel the final fuel filters clog at a decreasing time interval. What is the most likely cause?Not learned 197. When changing over from residual to distillate fuel on a slow-speed diesel main engine, what is a good guideline to follow regarding the change over?Not learned 198. When changing over from residual to distillate fuel on a slow-speed diesel propelled vessel, you should limit the rate of temperature change of the fuel in order to prevent what operational difficulty?Not learned 199. As Chief Engineer of a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system. You note a definite increase in the rate at which the purifier sludge tank is rising. One of the first items to check on your system would be which of the following?Not learned 200. The circuit shown in the illustration represents a/an __________Not learned 201. The most common contaminate of governor hydraulic fluid is __________.Not learned 202. In the common rail system, excessive pressure in the header may be caused by __________.Not learned 203. The component identified as item No.15 is used to __________Not learned 204. The component labeled "A" on the engine reversing device shown in the illustration, performs its function by transmitting _______Not learned 205. The component shown in the illustration would be identified as a/an __________Not learned 206. Which construction detail is apparent in the connecting rod and piston assembly shown in the illustrationNot learned 207. Crankcase explosions in propulsion diesel engines can result from which of the following?Not learned 208. The cylinders labeled "B" and "C" in the illustration are used to __________Not learned 209. The device labeled "D", as shown in the illustration, is the bowl __________Not learned 210. The device shown in figure "A" of the illustration is used to __________Not learned 211. The device shown in the illustration is classified as a/an __________Not learned 212. In the device shown in the illustration, the component lettered "A" is the __________Not learned 213. The diesel engine shown in the illustration is provided with an auxiliary blower to __________Not learned 214. The diesel engine shown in the illustration utilizes the type of cylinder construction identified as __________Not learned 215. If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase __________.Not learned 216. As an engineer of a slow-speed diesel powered vessel, you note that the indicator card diagrams have a flat horizontal profile around TDC. To rectify this, what would be your best course of action?Not learned 217. When entering a ECA, when should you begin the changeover to low sulphur fuel on a slow-speed diesel vessel?Not learned 218. Evidence of low temperature corrosion is observed on the combustion space components of a slow- speed diesel engine. What causes this corrosion and what can one do to mitigate this situation?Not learned 219. While examining a used fuel injection nozzle(s), one finds worn and enlarged orifices. What does this indicate about that cylinder's performance prior to nozzle replacement(s)?Not learned 220. Excessive wear at part No.11, shown in the illustration would result in __________Not learned 221. In what figure of the illustration does the crosshead experience the greatest side thrustNot learned 222. Which of the following precautions should be taken prior to starting the separator shown in the illustrationNot learned 223. After following the prescribed procedures to measure the thrust bearing clearance shown in the illustration, the distance "F" is determined to be 200 mm, and 'f1' is 2.3 mm. Which of the following statements describes the condition indicated by these dimensionsNot learned 224. Which of the following statements is accurate concerning the vibration sensing device used with the separator shown in the illustrationNot learned 225. Which of the following statements is correct concerning the connecting rod and piston assembly shown in the illustrationNot learned 226. Which of the following statements is correct concerning the operating function of the governor shown in the illustrationNot learned 227. Which of the following statements describes the function of the device labeled "C" shown in the illustrationNot learned 228. Which of the following statements describes what will occur if the annular spaces, indicated by the letter "K" of the device shown in the illustration, became restrictedNot learned 229. Which of the following statements describes the primary reason for the device shown in the illustration to be incorporated into the air start systemNot learned 230. Which of the following statements represents the function of the plunger flange labeled "A" shown in the illustrationNot learned 231. Which of the following statements would apply when checking the valve clearance of the unit shown in the illustrationNot learned 232. A four-stroke cycle auxiliary diesel engine fuel cam has shifted from its original position during maintenance. To ensure correct timing of the fuel pump, the intake and exhaust valves should be in what position when approaching top dead center for injection?Not learned 233. The gear drive, shown in the illustration, can have the backlash determined best by using a __________Not learned 234. The governor for an emergency diesel generator is shown in the illustration. When a large change in load results in a change in engine speed, which of the parts listed will be the FIRST governor component to react to the change in loadNot learned 235. The governor utilized with the device shown in the illustration has become inoperative while the vessel is underway at sea. Which of the following statements describes what action should be takenNot learned 236. From the graph shown in the illustration, determine the size of the regulating ring required for the proper operation of the fuel oil centrifuge if the fuel oil specific gravity is 0.9 kg/dm3 at 68°F, and the separating temperature is 158°FNot learned 237. The greatest difference between the centrifuge bowl shown in the illustration and that of a tubular bowl, with straight, vertical, interior surfaces, is that the illustrated unit __________Not learned 238. Heavy fuel oil used in the system shown in the illustration will have the lowest viscosity __________Not learned 239. The illustrated device is used to __________Not learned 240. In the illustrated engine, the main camshaft controls the timing of which of the following componentsNot learned 241. The illustration shown describes a _______Not learned 242. In the illustration shown, moving the component labeled "E", further to the left, will result in __________Not learned 243. Increasing the oil pressure acting on the power piston of the hydraulic governor shown in the illustration will __________Not learned 244. The indicated position of the fuel injection pump plunger as shown in the illustration, will provide fuel delivery to the diesel engine in an amount approximately equal to __________Not learned 245. If the input signal rises above the setpoint of '17A', shown in the illustration, but remains below the setpoint of '17B', the output from '22A' will __________Not learned 246. While inspecting diesel engine combustion space components, which components would you consider for particular scrutiny for evidences of high temperature corrosion?Not learned 247. When inspecting the valve mechanism shown in the illustration, normal maintenance would include __________Not learned 248. When installing the bearing cap on the device shown in the illustration, which of the precautions listed must be observedNot learned 249. If item "F" begins leaking during operation, which of the following operating conditions will NOT occurNot learned 250. The item labeled #16 in the illustration is a stack of spring washers. Their function is to __________Not learned 251. In the large slow-speed main propulsion diesel engine shown in the illustration, the part labeled "G" is the __________Not learned 252. As the load is being decreased on the engine controlled by the governor shown in the illustration, the __________Not learned 253. A loop-scavenged engine utilizes the motion of its pistons and a turbocharger to provide scavenging air. Which of the listed mechanical designs prevents the air under the pistons from being pumped back through the scavenge ports during the piston power stroke?Not learned 254. The lower end of the piston rod, shown in the illustration, is fitted into the __________Not learned 255. A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.Not learned 256. During maneuvering on a slow speed diesel engine vessel, a low starting air system pressure alarm is activated. Local starting air receivers' pressure gauges indicate proper pressures, and compressors are running and are 'loaded' up. What could cause the alarm?Not learned 257. What is the maximum allowable clearance permitted between the bearing, shown in the illustration and the shaft along its vertical axisNot learned 258. How may water be removed from the bowl of the separator as shown in the illustrationNot learned 259. A motor vessel has three centrifuges to pre-treat the fuel which can be configured to operate in series, parallel, and series-parallel. A large quantity of water is determined to be present in the fuel. How would you configure the centrifuges to deal with this problem?Not learned 260. A motor vessel has two centrifuges to pre-treat fuel to the engine(s) which may be configured to operate in series or parallel. A large quantity of water has been determined to be present in the fuel. What actions would you take to minimize the effect of water prior to fuel injection?Not learned 261. What is the normal bearing clearance permitted at the horizontal axis of the shaft for the bearing shown in the illustrationNot learned 262. One experiences evidence of high temperature corrosion on diesel engine combustion space components. This is exhibited by 'wire drawing' marks on exhaust valves/seats or metal reduction on cylinder heads. What causes this degradation of components?Not learned 263. What is one of the most significant factors to consider when calculating the amount of time required to change over to low Sulphur fuel on a slow-speed diesel main engine?Not learned 264. While operating the fuel oil centrifuge shown in the illustration, the bowl fails to open for sludge ejection. The probable cause is that __________Not learned 265. While operating the fuel oil centrifuge shown in the illustration, the fuel oil is being continuously ejected with the sludge and the seal water. The probable cause is the __________Not learned 266. What operational difficulties are associated with fuel incompatibility?Not learned 267. The Fairbanks Morse part labeled "G", as shown in the illustration, is a __________Not learned 268. A photoelectric cell installed in an automatically fired auxiliary boiler burner management system __________.Not learned 269. The pneumatic circuit shown in the illustration is part of a complex large low-speed engine control system. Which of the following statements describes the function of this circuitNot learned 270. A pre-arrival test is being performed with the engine on bridge control. The vessel has a slow speed engine with mechanical starting air system (not electronic). After a stop order, the engine fails to restart in the next ahead direction order. What would be your immediate actions to restart the engine, if the order was still ahead?Not learned 271. In pre-treating fuel oil on a motor vessel, what would you consider the most important factor to prevent high temperature corrosion on an engine's combustion components?Not learned 272. What is the primary purpose of the pneumatic component shown in the illustrationNot learned 273. A propulsion engine, using the speed control circuit shown in the illustration, fails to function at speeds lower than the low end of the critical speed range. Which of the following statements describes what should be done to correct this malfunctionNot learned 274. The purpose of the interlocked three-way valve shown in the illustration is to __________Not learned 275. When reassembling the bowl of the centrifuge, shown in the illustration, the alignment mark on the locking ring passes the bowl cover mark in excess of the manufacturer's specifications. This is due to __________Not learned 276. Regarding the fuel injector shown in the illustration, the purpose of piece #38 is to __________Not learned 277. Regularly taken indicator cards on a slow-speed diesel engine provides relative engine performance data allowing engineers to compare to previous data and manufacturer's design. What are the two most important parameters obtained from reading the indicator cards?Not learned 278. After removing the bowl hood of the device shown in the illustration, excessive quantities of sludge are visible. Which of the following statements represents the approach to rectify the situationNot learned 279. If a scavenging air space fire occurs on a slow-speed diesel engine and the engine is stopped, which of the following should be done to prevent distortion due to heat?Not learned 280. A schematic diagram of an isochronous hydraulic governor is shown in the illustration. When the load is removed the speed increases, and the __________Not learned 281. Your ship is equipped with ALCAP heavy fuel oil purifiers. The watchstander reports excessive water drained from the fuel oil service tank. Which component should he check?Not learned 282. As shown in the illustration, which of the following conditions would be responsible for a "low-pressure in oil outlet" alarm to be indicatedNot learned 283. As shown in the illustration of the fuel injection pump, the function of the area designated as "L" is to __________Not learned 284. As shown in the illustration of the fuel injection pump, the section designated as "M" is referred to as the __________Not learned 285. As shown in the illustration, the function of component "1" is to ________Not learned 286. You are on a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system. You notice an increase in the water drained from the service tank bottom drain. One of the first items to check on your system would be which of the following?Not learned 287. On a slow-speed diesel engine vessel equipped with an ALCAP fuel oil purification system, what would be a symptom of an opening solenoid valve leaking by?Not learned 288. If the speed of the propeller is 135 RPM, the speed of the engine camshaft shown in the illustration will be __________Not learned 289. The starter control valve in the hydraulic system shown in the illustration is malfunctioning. Before removing the valve, you must first __________Not learned 290. During the starting of a diesel engine, compression gases are prevented from backing into the air starting system, shown in the illustration, by the __________Not learned 291. Does sulfur content of heavy fuel oil effect the fuel rate of a diesel engine and why or why not?Not learned 292. What terminates the sludge discharge cycle of the device shown in the illustrationNot learned 293. After testing your medium-speed engine's exhaust valve springs you find one with a spring constant that is lower than specified by design and a length that is reduced in length from that specified by design. What is the recommended course of action?Not learned 294. The thrust bearing shown in the illustration has over eight years of ahead running time. Measurements show "i1" is 4 mm and "i2" is 1 mm. Which of the following conditions is indicated and what steps should be taken, if anyNot learned 295. While travelling in the tropics, the condensate draining from charge air receiver drain is flowing even though you have raised the inlet temperature to the allowable limit. What effect does excessive moisture have on the engine?Not learned 296. There are two glands provided where the piston rod exits the cylinder shown in the illustration. The purpose of the top gland is to __________Not learned 297. Which type of diesel engine fuel nozzle is shown in the illustrationNot learned 298. While underway, a slow-speed diesel engine lube oil sump level slowly begins to decrease. Which of the following should be checked?Not learned 299. If a valve seat insert, similar to that shown in the illustration is cracked, this may be indicated by __________Not learned 300. In the water level electrode assembly, shown in the illustration, the feed pump should restart when the level of the water reaches the position indicated by arrow '____'Not learned 301. Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.Not learned 302. Crankcase explosions in propulsion diesel engines result from __________.Not learned