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Engine · 1,029 questions

Steam Plants - USCG Exam Questions

Boilers, steam turbines, condensate and feed systems, and the operation and maintenance of steam propulsion plants.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

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All Steam Plants questions

Questions 101–200 of 1,029 · page 2 of 11

  1. #101 Gland sealing steam is used during steam turbine operation to prevent the loss of __________.
  2. #102 How is an excess of turbine gland seal steam remedied?
  3. #103 The main turbine gland sealing system is designed to ______.
  4. #104 According to illustration SE-0019, piston "F" in the gland seal regulator is moved upward by ________. SE-0019 illustration
  5. #105 According to the illustration SE-0019, bellows "I" in the gland seal regulator is actuated by ________. SE-0019 illustration
  6. #106 As shown in the illustration, live steam is supplied to the gland seal regulator via ________. Illustration SE-0019 illustration
  7. #107 For the gland seal regulator shown in the illustration, an increase in gland seal pressure will result in ________. Illustration SE-0019 illustration
  8. #108 Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?
  9. #109 Which of the following statements about gravity type lube oil systems is correct?
  10. #110 In a gravity lube oil system, a sight glass is installed in a line near the operating platform. This line connects the __________.
  11. #111 The gravity tank in a gravity lube oil system serves to __________.
  12. #112 The lube oil coolers installed in a gravity lubricating oil system are located between the __________.
  13. #113 Which of the following statements is true concerning lube oil coolers?
  14. #114 What type of lube oil cooler is shown in the illustration? GS-0122 illustration
  15. #115 During high speed operation of the main turbine propulsion unit, the heat absorbed by the lubricating oil is removed by the __________.
  16. #116 If the main and standby lube oil service pumps of the main engine fail while underway at sea, __________.
  17. #117 In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge direc...
  18. #118 Lube oil is preheated before centrifuging in order to __________.
  19. #119 Water is best removed from lubricating oil by __________.
  20. #120 The item shown in the illustration is commonly identified as a _________. GS-0124 illustration
  21. #121 Sludge tanks are used in an oil lubricating system to receive __________.
  22. #122 The bulk of the solid material entering a centrifugal purifier with lube oil is __________.
  23. #123 The dirty oil inlet on centrifugal lube oil purifiers is located at the __________.
  24. #124 In a disk type centrifugal purifier, the bowl is mounted on the upper end of the __________.
  25. #125 Of the many impurities commonly found in marine lubricating oil, which of the following CANNOT be removed by a centrifugal purifier at normal operatin...
  26. #126 What type of strainer is used in a turbine lube oil system to remove metallic particles?
  27. #127 Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wearing of the __________.
  28. #128 Which of the filter/strainer units listed permits you to clean the element while leaving the system on the line?
  29. #129 As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This condition may be avoided by __________...
  30. #130 Which of the filters listed will deplete the additives in lubricating oil?
  31. #131 After the steam leaves the low pressure turbine, it enters the __________.
  32. #132 In a cross-compounded turbine propulsion plant, steam enters the __________.
  33. #133 Steam supplied to the main propulsion turbines is __________.
  34. #134 Concerning the classification of steam turbines, a cross compound designed unit __________.
  35. #135 An efficient seal is normally obtained between the upper and lower halves of a turbine casing by __________.
  36. #136 Which of the devices listed is found on an LP main propulsion steam turbine casing?
  37. #137 The adjustable spherically seated self-aligning bearing housings used in main turbines are provided with oil deflector rings. The function of these ri...
  38. #138 The jacking gear must be engaged as quickly as possible when securing the Main Turbines in order to __________.
  39. #139 The jacking gear on main propulsion turbines can be used to __________.
  40. #140 A common method of preheating main turbine lube oil prior to rolling over the main unit would be to ________.
  41. #141 To stop the rotor of a main turbine while underway at sea you should __________.
  42. #142 Which of the following operational practices is helpful in avoiding the accumulation of condensate in the main reduction gear casing?
  43. #143 Guardian valves are installed on main propulsion turbines to __________.
  44. #144 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 operatin...
  45. #145 While a vessel is underway, one of the FIRST indications of the failure of the gland leakoff exhaust fan motor is __________.
  46. #146 Operating a steam turbine propulsion unit at reduced speed, in an area with extremely cold seawater, with the main circulating pump providing full coo...
  47. #147 During normal operation of a main propulsion turbine, the lube oil supply temperature to the bearings should be maintained at approximately __________...
  48. #148 Improper operation or faulty main steam turbine components may be indicated by an abnormal variation in _______.
  49. #149 The astern guarding valve on main propulsion steam turbine units must be open when a vessel is __________.
  50. #150 Hot running bearings can be caused by __________.
  51. #151 An overheated bearing in the main propulsion unit is indicated by __________.
  52. #152 While making your rounds, you notice the main lube oil temperature to be higher than normal. To remedy this situation, you should __________.
  53. #153 An excessive pressure differential across a lube oil strainer could indicate __________.
  54. #154 While a vessel is underway, which of the conditions listed would indicate a leak in the lube oil cooler?
  55. #155 When a sudden increase in pressure occurs in a forced lubrication system, you should check for a __________.
  56. #156 A lube oil sample is taken from the main engine lube oil system and visually inspected. Which of the following would indicate water contamination?
  57. #157 Excessive water in an operating lube oil system can be detected by __________.
  58. #158 In a gravity type lube oil service system, if no lube oil appears in the sight glass of the return drop line while underway, this is a positive indica...
  59. #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 i...
  60. #160 Lube oil temperature leaving the lube oil coolers is regulated by throttling the __________.
  61. #161 The maximum temperature rise of oil passing through any reduction gear set, or bearing, should not exceed __________.
  62. #162 The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.
  63. #163 A poorly cleaned lube oil purifier bowl may result in __________.
  64. #164 During the routine inspection of an operating centrifugal lube oil purifier, you notice oil discharging through the water discharge port. Which of the...
  65. #165 A centrifugal oil purifier should be shut down if the __________.
  66. #166 In a disk type lubricating oil centrifuge __________.
  67. #167 Which of the conditions listed should be immediately reported to the engineering officer on watch?
  68. #168 Air trapped within the main condenser shell is detrimental because it will __________.
  69. #169 Serious tube leaks in the air ejector after condenser assembly may cause __________.
  70. #170 If the boiler water and condenser hot well levels are normal, but the DC heater level is only 30% of full, you should __________.
  71. #171 Vapor blowing from the air ejector condenser vent may be caused by __________.
  72. #172 Excessive water loss from the main feed system can be caused by __________.
  73. #173 Saltwater contamination of condensate could occur at which component?
  74. #174 Excessive recirculation of condensate should be avoided, as it can cause __________.
  75. #175 The usual symptoms of cavitation in a main condensate pump would be __________.
  76. #176 Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity?
  77. #177 If the condensate level in the loop seal of the air ejector inter condenser is lost, __________.
  78. #178 Which of the following actions should be taken FIRST when the boiler fires begin to sputter due to water in the fuel oil?
  79. #179 Which of the actions listed should be carried out immediately after securing the fires in one boiler of a two boiler ship?
  80. #180 Carbon deposits on the diffuser and register throat ring of a burner __________.
  81. #181 If the water level in a steaming boiler is dropping rapidly and cannot be kept at the normal level by standard practices, you should __________.
  82. #182 Which steam plant watch operating condition will require priority attention over the other situations listed?
  83. #183 Prior to relieving the watch you should first check the fire room status by verifying the boiler steam drum level and _________.
  84. #184 If an oil fire occurs in the double casing of a steaming boiler, you should __________.
  85. #185 Any abnormal condition or emergency occurring in the fire room must be immediately reported to the __________.
  86. #186 Which of the following procedures represents the proper care of unused burners during low load conditions?
  87. #187 To properly clean a burner tip, you should use __________.
  88. #188 To properly remove the burner tip nut from the burner barrel, the barrel should be __________.
  89. #189 If you noted a large difference in the pressures indicated by a duplex pressure gage to the fuel oil system strainer, you should __________.
  90. #190 Which of the conditions listed would indicate a dirty fuel oil strainer?
  91. #191 If water hammer develops while opening the valve in a steam line, which of the following actions should be taken?
  92. #192 Noise caused by condensate striking bends or fittings in a steam pipe line is called __________.
  93. #193 Which of the following statements represents the function the nozzle assembly performs in an impulse turbine?
  94. #194 The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by _______.
  95. #195 Shrouding on impulse turbine blading is held in place by __________.
  96. #196 Tenon peening is a technique employed by turbine manufacturers to __________.
  97. #197 Which of the steam losses listed would be associated with a multistage impulse turbine rather than a multistage reaction turbine?
  98. #198 The purpose of shroud bands secured to the tips of the turbine blades is to __________.
  99. #199 Steam passing through a multistage impulse turbine does not impart any appreciable axial thrust to the rotor. This is primarily due to the __________.
  100. #200 In an impulse turbine, the fixed blades function to __________.

Steam Plants questions: what to expect

Q How many Steam Plants questions are in the Engine pool?

There are 1,029 Steam Plants questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its Steam Plants module from the same pool.

Q What score do I need to pass the Steam Plants module?

Most USCG exam modules, including Steam Plants, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG Steam Plants exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

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