Q538 - Steam Plants II, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. If a lube oil pump fails to build up discharge pressure, the cause could be the __________.Not learned 2. Which of the following statements is true concerning lube oil coolers?Not learned 3. The auxiliary exhaust system shown in the illustration can be supplied by steam from the __________Not learned 4. Which of the following systems can normally be supplied by auxiliary exhaust steam?Not learned 5. The primary source of steam to the auxiliary exhaust system is typically supplied directly from __________.Not learned 6. Which statement is true concerning drain inspection tanks?Not learned 7. If live steam is supplied directly to the tank heating coils, the collected drains in the "clean" section of the contaminated drain inspection tank are removed directly to the __________.Not learned 8. A contaminated steam generator is used to produce saturated vapor from collected __________.Not learned 9. An excess pressure governor would normally be used on a __________.Not learned 10. The constant pressure governor of a turbine-driven feed pump maintains which of the following pressures at a constant value for all capacities?Not learned 11. Under EMERGENCY operating conditions with the main feed valve malfunctioning, what should be the proper valve positions for controlling feedwater to the boiler?Not learned 12. As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This condition may be avoided by __________.Not learned 13. What will be the FIRST thing to occur if both the main and standby lube oil pumps failed to operate on a geared main propulsion steam turbine operating at full sea speed?Not learned 14. If it should become necessary to abandon a compartment because of the danger of a large steam leak on a boiler, which of the following actions represents the best avenue of escape?Not learned 15. As steam accomplishes work in an engine or turbine, the pressure of the steam is reduced because it __________.Not learned 16. Why is superheated steam used in the main propulsion turbines instead of saturated steam?Not learned 17. As steam first enters the main propulsion turbine, which of the following energy conversions takes place?Not learned 18. Which of the precautions listed should be taken when gagging a boiler safety valve?Not learned 19. While your vessel is underway at normal speed, a steam drum safety valve develops a significant leak. Your first corrective action should be to __________.Not learned 20. The greatest single overall loss of efficiency in a marine propulsion steam plant cycle results from __________.Not learned 21. In an automatically fired boiler, the steam pressure regulator controls the supply of fuel oil to the burners by responding to variations in the __________.Not learned 22. In automated boiler operations, a dirty flame scanner will most likely result in __________.Not learned 23. When the flame scanner senses flame failure during boiler operation, which of the listed events will occur FIRST?Not learned 24. Which of the following represents a significant system limitation to be aware of when a burner management system is operated in the "HAND" mode?Not learned 25. Modern day boiler automation allows bypassing the "flame safeguard" system to permit a burner to have a "trial for ignition" period during burner light-off. This period may not exceed ______.Not learned 26. In the prevention of moisture carryover from a marine boiler, one important consideration is to __________.Not learned 27. As the pH of the boiler water approaches zero, the water becomes increasingly __________.Not learned 28. The amount of sodium phosphate in treated boiler water can be measured by a/an __________.Not learned 29. A sample of boiler water can be chemically tested for alkalinity by initially adding a few drops of phenolphthalein and then slowly titrating the water sample until the __________.Not learned 30. 8 ounces of oxygen, dissolved in 500,000 pounds of water, is a concentration of __________.Not learned 31. What boiler water chemistry is necessary to ensure the precipitation of hard scale forming calcium?Not learned 32. The most troublesome corrosive substances in boiler water are oxygen and __________.Not learned 33. Treatment of boiler feedwater for the control of hardness is necessary to prevent __________.Not learned 34. The major reason dissolved gases are removed from boiler feedwater is because they may cause __________.Not learned 35. Boiler water hardness is increased by __________.Not learned 36. Carbon dioxide dissolved in boiler water is dangerous in a modern power boiler because the gas __________.Not learned 37. Which of the listed operating practices is considered as safe, and should be followed when opening and inspecting the waterside of a boiler?Not learned 38. When firing a boiler in local manual control, an increase in boiler load must be accompanied by a/an __________.Not learned 39. If the water level in one boiler of a two-boiler plant rapidly falls out of sight, which of the following actions should be carried out FIRST?Not learned 40. When a boiler flareback occurs, you should __________.Not learned 41. If a major flareback occurs to a boiler, which of the following actions should be immediately taken?Not learned 42. The most practical method of determining the condition of a shaft bearing while the shaft is in operation is to __________.Not learned 43. Which of the following types of bearing lubrication schemes can carry the highest unit loading?Not learned 44. Which of the following would cause the dowel or locking lip of a split-type, precision insert, main bearing to shear and allow the bearing to rotate with the journal?Not learned 45. An overheated bearing in the main propulsion unit is indicated by __________.Not learned 46. Which of the following types of bearings are used for the reduction gears in a marine steam turbine installation?Not learned 47. Babbitt is a metal alloy commonly used for lining __________.Not learned 48. Main steam turbine bearings are lined with __________.Not learned 49. Chamfers, located at the parting edges of horizontal split sleeve type bearings, are used to facilitate oil storage and distribution. They are machined __________.Not learned 50. Which of the following construction methods would apply to the Babbitt lined, split-type, reduction gear bearings?Not learned 51. Which of the journal bearings listed most easily accommodates the minor turbine shaft misalignment?Not learned 52. The splits located in the halves of main reduction gear bearings are aligned at an angle to the horizontal in order to resist __________.Not learned 53. A common cause of the Babbitt linings cracking in a turbine journal bearing is from ________.Not learned 54. For a large main propulsion turbine, the most commonly used turbine thrust bearing is the __________.Not learned 55. When a turbine is in operation, a rotor position micrometer is used to determine any change in rotor __________.Not learned 56. As found in a reduction gear drive system, thrust bearings serve to __________.Not learned 57. A Kingsbury, or pivot shoe type thrust bearing, can bear much greater loads per square inch of working surface than can parallel surface bearings because provisions are made in the Kingsbury bearing __________.Not learned 58. What is generally found at the end of the low-pressure turbine rotor of a cross compound turbine arrangement?Not learned 59. In a cross-compounded turbine propulsion plant, steam enters the __________.Not learned 60. The astern element of a main propulsion turbine is usually designed as a __________.Not learned 61. Which of the parts listed for a reaction turbine serve the same function as the nozzles of an impulse turbine?Not learned 62. What happens to the steam as it moves across the moving blades in a reaction turbine?Not learned 63. Why do double flow reaction turbines produce very little axial thrust?Not learned 64. What is used to compensate for the increased possibility of blade vibration occurring with impulse turbine blading?Not learned 65. A pressure drop occurs across both the moving and fixed blades of a reaction turbine as a result of the __________.Not learned 66. Large temperature and pressure drops which occur in the first stage of a combination impulse and reaction turbine are caused by steam passing through __________.Not learned 67. An impulse-reaction turbine is characterized by which of the following arrangements?Not learned 68. Design characteristics of a velocity-compounded impulse turbine include the utilization of __________.Not learned 69. Which of the following statements represents the function the nozzle assembly performs in an impulse turbine?Not learned 70. A pressure-velocity compounded impulse turbine consists of __________.Not learned 71. In what classification of steam turbines are the moving blades and the adjacent fixed rows of blades shaped to act as nozzles?Not learned 72. Steam passing through a multistage impulse turbine does not impart any appreciable axial thrust to the rotor. This is primarily due to the __________.Not learned 73. In an impulse turbine, the fixed blades function to __________.Not learned 74. Tenon peening is a technique employed by turbine manufacturers to __________.Not learned 75. Concerning the classification of steam turbines, a cross compound designed unit __________.Not learned 76. A turbine assembly in which steam flows in series through a high-pressure turbine and then on to a low- pressure turbine, with both turbines driving a common reduction gear through separate shafts, is classified as _________.Not learned 77. In a cross-compound main propulsion unit, the astern turbine is usually installed at the __________.Not learned 78. In which type of turbine does a pressure drop exist through the fixed blades and the moving blades?Not learned 79. Most auxiliary turbine feed pumps do not require an external source of gland sealing steam because they __________.Not learned 80. When starting a turbo-generator, you must provide lube oil pressure to the governor power piston by means of __________.Not learned 81. A turbo generator back pressure trip can be actuated as a result of __________.Not learned 82. To test an automatic low lube oil pressure trip on an idling turbo-generator and at the same time prevent the chance of bearing damage, you should __________.Not learned 83. A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance?Not learned 84. An efficient seal is normally obtained between the upper and lower halves of a turbine casing by __________.Not learned 85. Turbine casing flanges are sometimes provided with a system of joint grooving to __________.Not learned 86. Which of the devices listed is found on an LP main propulsion steam turbine casing?Not learned 87. Labyrinth seals used to reduce leakage around a turbine shaft are constructed of __________.Not learned 88. Where are moisture shields located in a main propulsion steam turbine?Not learned 89. Nozzle diaphragms are installed in pressure-compounded impulse turbines to __________.Not learned 90. Because of the pressure drop existing across each diaphragm, the flow of steam between the nozzle diaphragm and the rotor of the turbine is held to a minimum by __________.Not learned 91. Shrouding on impulse turbine blading is held in place by __________.Not learned 92. The correct radial clearances between the rotor and the casing in a propulsion turbine are maintained by the turbine __________.Not learned 93. The purpose of shroud bands secured to the tips of the turbine blades is to __________.Not learned 94. Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of __________.Not learned 95. The purpose of the sentinel valve installed on a turbine casing is to __________.Not learned 96. Carbon ring packing segments are secured in a shaft gland assembly of a steam turbine by means of __________.Not learned 97. Labyrinth seals are used on rotating steam turbine shafts to reduce external leakage. How is this accomplished?Not learned 98. Labyrinth packing rings are installed on turbine diaphragms to minimize __________.Not learned 99. When fitting new carbon ring packing on a turbine rotor shaft, carefully filing the ends of the segments will ______.Not learned 100. The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by _______.Not learned 101. Gland sealing steam is used on propulsion turbines to prevent __________.Not learned 102. Gland sealing steam is used during steam turbine operation to prevent the loss of __________.Not learned 103. How is an excess of turbine gland seal steam remedied?Not learned 104. As shown in the illustration, piston "F" in the gland seal regulator is moved upward by ________Not learned 105. Which of the following conditions is indicated by the necessity of providing excessive gland sealing steam pressure to maintain the normal operating conditions of the main propulsion unit?Not learned 106. While a vessel is underway, one of the FIRST indications of the failure of the gland leak off exhaust fan motor is __________.Not learned 107. Which type of packing is primarily utilized to control steam leakage from the casing of a modern auxiliary turbine?Not learned 108. A cloudy or milky appearing lube oil sample, taken from the main lubricating oil system could be caused by __________.Not learned 109. An energy loss associated with a reaction turbine, but not an impulse turbine, is __________.Not learned 110. The general method of reducing turbine reaction blade vibration is by the use of _______.Not learned 111. Which of the steam losses listed would be associated with a multistage impulse turbine rather than a multistage reaction turbine?Not learned 112. Turbine throttling losses can best be described as a loss of energy occurring __________.Not learned 113. If a line shaft bearing begins to overheat, the shaft speed should be reduced. If overheating persists, you should then __________.Not learned 114. Which immediate action should you take when the temperature of one line shaft bearing increases above its normal operating temperature?Not learned 115. Which of the following operational practices is helpful in avoiding the accumulation of condensate in the main reduction gear casing?Not learned 116. Which of the devices listed is generally used to engage the main engine turning gear to the high- pressure turbine high-speed pinion?Not learned 117. The main propulsion shaft turning gear usually connects to the free end of the high-speed high-pressure pinion because the __________.Not learned 118. To prevent damage to the turning gear mechanism, which of the following procedures must be carried out before the turning gear is engaged?Not learned 119. The jacking/turning gear mechanism of a main propulsion geared turbine installation is normally connected through mechanical linkage to the _______.Not learned 120. The jacking gear on main propulsion turbines can be used to __________.Not learned 121. Excessive thrust bearing wear in a main propulsion turbine rotor should FIRST become apparent by __________.Not learned 122. Which of the listed operational checks should be made "continuously" on the main propulsion reduction gears?Not learned 123. Regarding main reduction gears, when high-speed first reduction pinions and gears are connected to low-speed pinions and gears, each contained in a sequential portion of the gear housing, the reduction gear unit is known as __________.Not learned 124. The purpose of the main reduction gears is to __________.Not learned 125. Most main propulsion reduction gear bearings are __________.Not learned 126. Which of the following statements defines the term "axial float" in reference to reduction gears?Not learned 127. What is the significance of pinion deflection in the operation of reduction gears?Not learned 128. After the housing has been bolted down, the final check of reduction gear tooth contact is usually made by __________.Not learned 129. The slight wavy appearance of the tips of reduction gear teeth is a result of __________.Not learned 130. Axial movement in a gear-type flexible coupling is provided for by __________.Not learned 131. Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the reduction gear?Not learned 132. On main turbine propulsion units, gear-type flexible couplings are generally used between the __________.Not learned 133. A steam driven 750 KW turbo generator has a rated speed of 1200 RPM. The over speed setting for this unit must not exceed __________.Not learned 134. Which of the listed parts illustrated in the turbo-generator governing system, provides the follow-up to prevent the nozzle valves from cycling between the fully open and fully closed positions, with each variation in turbine speedNot learned 135. In any governor there is a small range of speed in which no corrective action occurs. This speed range is called the governor deadband and is caused by __________.Not learned 136. If two turbo-generators with the same no-load speed settings are operating in parallel, the unit whose governor has the lesser speed droop will __________.Not learned 137. Guardian valves are installed on main propulsion turbines to ______.Not learned 138. Which of the following is used to hold the poppet valves closed in a turbo-generators nozzle control speed regulator?Not learned 139. Which of the following statements concerning the design of balanced throttle valves is correct?Not learned 140. The main throttle valve on a main propulsion turbine admits steam directly into the __________.Not learned 141. The overspeed tripping device installed on an auxiliary turbine is automatically actuated by __________.Not learned 142. A sequential lift, nozzle valve control bar on a turbo-generator, utilizes which of the following operating principles?Not learned 143. Which of the following statements represents the significance of the differential pressure existing between the nozzle block and steam chest of a turbogenerator equipped with a lifting beam mechanism?Not learned 144. As lube oil absorbs moisture its dielectric strength can be expected to __________.Not learned 145. Water retained in the lube oil system of a main propulsion turbine installation is undesirable because it __________.Not learned 146. In a steam turbine and reduction gear main propulsion plant, the alarm sensor for low turbine oil pressure is usually installed __________.Not learned 147. During high-speed operation of the main turbine propulsion unit, the heat absorbed by the lubricating oil is removed by the __________.Not learned 148. The lube oil coolers installed in a gravity lubricating oil system are located between the __________.Not learned 149. Fine metallic particles, which may originate from wear or failure of the lube oil service pump internal parts, are prevented from contaminating the bearings served by the lube oil system by __________.Not learned 150. Turbine lube oil suction strainer baskets have __________.Not learned 151. In a gravity lube oil system, a sight glass is installed in a line near the operating platform. What two things does this line connect?Not learned 152. In order to maintain the required lube oil temperature leaving a lube oil cooler, where an automatic bypass valve is not provided, which of the following operations is correct?Not learned 153. When the temperature of the main turbine lubricating oil is lowered, an increase will occur in the __________.Not learned 154. Oil supply pressure to the main lube oil header of a gravity feed lube oil system is __________.Not learned 155. The gravity tank in a gravity lube oil system serves to __________.Not learned 156. Oil flowing through the sight glass in the line between the lube oil gravity tank and main sump indicates the __________.Not learned 157. In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge directly to the __________.Not learned 158. To assure the main propulsion turbine bearings are receiving the proper lube oil supply, you should check the __________.Not learned 159. On a ship equipped with a gravity type lube oil system, which of the conditions listed will occur FIRST if the main lube oil pump discharge pressure is lost?Not learned 160. After starting the main lube oil pump in a gravity-type lube oil system, you should verify that the gravity tanks are full by __________.Not learned 161. While a vessel is underway, which of the conditions listed would indicate a tube leak associated with the sea water-cooled lube oil cooler on service?Not learned 162. If saltwater leaks into and contaminates the main lubricating oil system, which of the following remedial actions should be taken?Not learned 163. Which of the following would contribute to the formation of an oil and water emulsion, in addition to acid formation?Not learned 164. Which of the filters listed will deplete the additives in lubricating oil?Not learned 165. Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wearing of the __________.Not learned 166. Which of the following conditions may exist if you detect an excessive amount of metal particles on a main engine lube oil strainer magnet?Not learned 167. In order to obtain the best performance with a lube oil purifier, the lube oil inlet temperature should __________.Not learned 168. The disk stack and tubular shaft used in a lube oil centrifugal purifier, is forced to rotate at bowl speed by __________.Not learned 169. In a disk type centrifugal purifier, the contaminated oil enters the centrifuge __________.Not learned 170. One function of the disks, in a disk-type centrifugal purifier, is to divide the bowl space into many separate passages to __________.Not learned 171. In the operation of a lube oil clarifier, the position of the oil/water interface should be __________.Not learned 172. The rotating speed of the tubular bowl centrifuge is more than twice that of the disk-type. The reason for this is __________.Not learned 173. Which of the following statements concerning the operation of a lube oil purifier is correct?Not learned 174. A centrifuge will satisfactorily remove which of the listed substances from lube oil?Not learned 175. The water seal in a centrifuge, operating at normal speed, prevents the lube oil from discharging from the water outlet. Another function of the seal is to __________.Not learned 176. When water is removed from lube oil passing through a centrifugal purifier, the water removed will __________.Not learned 177. The term "separation" as used in oil purification refers to the removal of __________.Not learned 178. If contaminated lube oil were allowed to settle undisturbed in a tank, into which layers would the contaminants separate?Not learned 179. In a disk-type lubricating oil purifier, __________.Not learned 180. Of the many impurities commonly found in marine lubricating oil, which of the following CANNOT be removed by a centrifugal purifier at normal operating speeds and temperatures?Not learned 181. When a turbine rotor is not rotating during maneuvering, the heat tends to be concentrated at the __________.Not learned 182. With vacuum up and the main propulsion turbine standing by while awaiting engine orders, it is necessary to roll the unit alternately ahead and astern every five minutes to __________.Not learned 183. The main propulsion turbine should be operated with the __________.Not learned 184. The FIRST step in breaking vacuum on a main turbine unit should be to __________.Not learned 185. In securing the main turbines, steam to the second stage air ejectors should be left on for a short period of time in order to __________.Not learned 186. What must you do before placing the jacking gear in operation on a main turbine unit?Not learned 187. The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.Not learned 188. What should you do prior to rolling the main turbines in preparation for getting underway?Not learned 189. The most critical period of main turbine operation is during cold start-up, rather than hot shutdown because __________.Not learned 190. A common method of preheating main turbine lube oil prior to rolling over the main unit would be to ______.Not learned 191. After properly lining up the main propulsion turbine for warm up, steam should first be admitted to the rotor through the ________.Not learned 192. The main propulsion turbine can be damaged by __________.Not learned 193. In addition to causing erosion of turbine blades, slugs of water in the steam supply to a turbine- driven pump can result in __________.Not learned 194. The maximum lube oil temperature leaving a large, main propulsion steam turbine bearing should __________.Not learned 195. While making engine room rounds at sea, you observe excessive steam leaking from the forward gland on the high pressure turbine. This may indicate that the __________.Not learned 196. Which of the listed procedures should be followed when raising vacuum on the main propulsion plant prior to getting underway?Not learned 197. The level of the contaminated drain inspection tank continually decreases when steam is admitted to a fuel oil double bottom tank. You can expect __________.Not learned 198. While a vessel is underway the low-pressure turbine high-speed pinion is damaged. The pinion is then removed from the gear train. Under these circumstances, the main unit is capable of which speed and direction?Not learned 199. If the main and standby lube oil service pumps of the main engine fail while underway at sea, __________.Not learned 200. In an auxiliary diesel engine, one reason for knurling the piston skirt is to __________.Not learned 201. 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 202. 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 203. The intake and exhaust valves used in a diesel engine are returned to their seats by __________.Not learned 204. Worn diesel engine intake valve guides can result in __________.Not learned 205. Rotating flyweights, acting against a spring force, will provide a simple type of __________.Not learned 206. A constant speed hydraulic governor would more than likely be installed on a __________.Not learned 207. Lube oil pumps taking suction from the sump of most small marine engines are usually __________.Not learned 208. Auxiliary diesel engines can be automatically shut down as a result of __________.Not learned 209. One limiting problem of lube oil filters restricting their use in large lube oil systems is __________.Not learned 210. Lube oil cannot be efficiently filtered if it’s __________.Not learned 211. The size of the discharge ring used for the efficient operation of a disk type purifier is dependent upon the __________.Not learned 212. In order to maintain the effectiveness of the lube oil centrifuge to remove water, the engineer in charge should __________.Not learned 213. Which of the following problems will occur if a manually cleaned disk-type centrifugal lube oil purifier contains insufficient sealing water prior to admitting oil flow to the bowl?Not learned 214. High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by __________.Not learned 215. A photoelectric cell is installed in an oil fired boiler safeguard system to introduce proper resistance values to the electronic control circuit. This device is primarily sensitive to __________.Not learned 216. Before any auxiliary diesel engine hydraulic starting system is opened for servicing or repair, you must __________.Not learned 217. A diesel engine could fail to start because of __________.Not learned 218. If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be __________.Not learned 219. Excessive vibration in an operating diesel generator may be caused by __________.Not learned 220. The turbine of a turbo-electric drive should be secured by __________.Not learned 221. In the auxiliary diesel engine, shown in the illustration, the __________Not learned 222. The component shown in the illustration, labeled "I", is the __________Not learned 223. Which of the following methods is used to securely fasten the Babbitt lining of a reduction gear bearing to its shell?Not learned 224. The Fairbanks Morse part labeled "G", as shown in the illustration, is a __________Not learned 225. According to the illustration, what actuates the bellows "I" in the gland seal regulatorNot learned 226. According to the illustration, what is the normal function of the component shownNot learned 227. The adjustable spherically seated self-aligning bearing housings used in turbines are provided with oil deflector rings. The function of these rings is to __________.Not learned 228. Your auxiliary diesel engine has an air start system with a Bendix drive. You have the air cocks open to roll over the engine. You push the start button and nothing happens. What is the FIRST thing that you should suspect?Not learned 229. If an auxiliary diesel engine is overheating at a steady load, what should be the first thing that you suspect?Not learned 230. If an auxiliary diesel engine starts firing but does not come up to normal speed, without load or under a small load, one cause may be __________.Not learned 231. Auxiliary steam at full operating pressure is supplied from the boiler directly to the __________.Not learned 232. How is an auxiliary turbine boiler feed pump normally stopped?Not learned 233. The base ring shown in the illustration is identified by the letter __________Not learned 234. Which boiler casualty is considered to be the most serious?Not learned 235. When a boiler water test indicates a pH value of 6, you should __________.Not learned 236. Chemicals are added to boiler water to __________.Not learned 237. Clean oil leaves the centrifuge illustrated through item __________Not learned 238. What color smoke may be indicative of a leaking head gasket?Not learned 239. The component labeled "II", as shown in the illustration, is called the __________Not learned 240. The component shown in the illustration, labeled "III", is the __________Not learned 241. The component shown in the illustration, labeled "IV", is the ________Not learned 242. Which of the coupling types listed is shown in the illustrationNot learned 243. In the diagrammatic arrangement of the thrust bearing, shown in the illustration, the direction of shaft rotation and the direction of thrust are indicated respectively by arrows __________Not learned 244. In the event of failure of bellows "I" as shown in the illustration, ________Not learned 245. When the flow of oil admitted to a disk-type centrifugal purifier is in excess of its designed capacity, which of the following conditions will usually occur?Not learned 246. Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?Not learned 247. Which of the following statements describes how the main propulsion turbine overspeed relay initiates closing of the throttle valve?Not learned 248. Which of the following statements about gravity type lube oil systems is correct?Not learned 249. Which of the following statements is true concerning the coupling shown in the illustrationNot learned 250. Which of the following statements is true concerning the lube oil system shown in the illustrationNot learned 251. Which of the following statements is true concerning the piping system shown in the illustrationNot learned 252. Which of the following statements is true concerning the turbine shown in the illustrationNot learned 253. As found in a basic pneumatic automatic combustion control system, the function of a standardizing relay is to __________.Not learned 254. In which four stroke diesel engine system are sacrificial zinc anodes most commonly found?Not learned 255. Fuel piping should be regularly inspected for leaks. What leak location would be particularly troublesome in terms of presenting a fire hazard?Not learned 256. If the gland assembly shown in the illustration is located at the forward end of the high-pressure turbine and the vessel is operating at full speed ahead, __________Not learned 257. For the gland seal regulator shown in the illustration, an increase in gland seal pressure will result in ________Not learned 258. When you hear an exhaust gas turbine of an auxiliary diesel engine surge it sounds like it is "barking." What is the likely cause of a turbine "barking?"Not learned 259. In the illustration of a typical ship service turbo-generator control system, the handle labeled "B" is used to _______________Not learned 260. The intermediate pressure bleed steam system, shown in the illustration, is used to supply steam at approximately __________Not learned 261. Item "Q" in the illustration is used to __________Not learned 262. Journal bearings used with turbine rotors are manufactured in two halves in order to __________.Not learned 263. Which line in the illustration shown provides live steam to the gland seal regulatorNot learned 264. Which of the listed actions will occur when there is an increase in load on a ship service generator equipped with a centrifugal type hydraulic governorNot learned 265. On a main propulsion turbine bearing, the readings obtained with a bridge gauge represent the __________.Not learned 266. During maneuvering, a vessel has just reached full ahead from a dead slow condition. Which of the following actions reflects the first operation of the gland seal regulator shown in the illustrationNot learned 267. How many Curtis stages are contained in the turbine shown in the illustrationNot learned 268. What may be an indication that you have a leaking injection nozzle?Not learned 269. What may be an indication of white smoke coming from the exhaust of an auxiliary diesel engine?Not learned 270. A motor driven synchronizing device, figure "D" shown in the illustration, operated from the generator switchboard, initiates fine adjustments to the steam turbine speed by directly __________Not learned 271. Who must supervise the setting of a boiler safety valve?Not learned 272. During normal operation of a main propulsion turbine, the lube oil supply temperature to the bearings should be maintained at approximately __________.Not learned 273. Operating a steam turbine propulsion unit at medium-speed, in an area with extremely cold sea water and the main circulating pump providing full cooling water flow to the condenser will result in __________.Not learned 274. The original bridge gauge reading for a reduction gear bearing was measured as 0.008 inches. A year later, the bridge gauge reading for the same bearing is 0.010 inches. What would this indicate?Not learned 275. Packing rings installed on auxiliary turbines are generally lubricated by __________.Not learned 276. The part shown in the illustration would be located between which of the following components of a modern geared turbine main propulsion unitNot learned 277. A pilot valve and servomotor are utilized in mechanical-hydraulic governing systems on a turbo- generator unit in order to __________.Not learned 278. At what piston position should you set the valve clearance on a four-stroke auxiliary diesel engine?Not learned 279. When the plunger of an injection pump of an auxiliary diesel engine is stuck, it may cause which of the following conditions?Not learned 280. Precautions to be observed prior to starting a turbine driven feed pump, should include __________.Not learned 281. What is the purpose of a rotocap on an auxiliary diesel engine exhaust valve spindle?Not learned 282. Reduction gears for main propulsion turbines are lubricated by __________.Not learned 283. The reduction gear shown in the illustration is a/an __________Not learned 284. When removing a piston, what is a good indication that your lube oil is good and supplied in the proper amount?Not learned 285. When securing a main propulsion turbine equipped with carbon packing glands, the vacuum should always be broken before securing the gland seal steam because __________.Not learned 286. When setting a propulsion boiler safety valve, in whose presence and satisfaction should this be accomplished?Not learned 287. A ship is equipped with the illustrated turbine gear set and a right hand turning propeller. When steam is admitted to the astern element, with sternway on, the high-speed gear on the high-pressure side is__________Not learned 288. Which of the statements listed applies to the quill shaft shown in the illustrationNot learned 289. To stop the rotor of a main turbine while underway at sea you should __________.Not learned 290. The three-wing device in the unit illustrated is maintained in its position by item __________Not learned 291. In the thrust bearing assembly illustrated the total oil clearance can be correctly decreased by __________Not learned 292. When turbine rotor shafts extend through the casing, an external source of sealing steam is used in conjunction with labyrinth packing to __________.Not learned 293. What type of bearing is shown in the illustrationNot learned 294. What type of lube oil cooler is shown in the illustrationNot learned 295. The type of turbine shown in the illustration is classified as a __________Not learned 296. A unit of measure used to express the chloride content of boiler water is __________.Not learned 297. While a vessel is underway, the low-pressure turbine high-speed pinion of the main reduction gears is damaged. After the damaged high-speed pinion is removed and the main engines are placed back into operation, what would be the speed and direction capability of the main propulsion engines?Not learned 298. Water removed through centrifugal force in the illustrated unit is displaced from the bowl through __________Not learned 299. Which of the following types of bearings are used as line shaft bearings?Not learned