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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 1–100 of 1,029 · page 1 of 11

  1. #1 By which of the listed methods may heat be transferred from one body to another?
  2. #2 Which of the following statements is correct concerning heat transfer?
  3. #3 Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?
  4. #4 Auxiliary steam at full operating pressure is supplied from the boiler directly to the __________.
  5. #5 Which of the following statements is true concerning the piping system shown in the illustration? SG-0005 illustration
  6. #6 Precautions to be observed prior to starting a turbine driven feed pump, should include __________.
  7. #7 An auxiliary turbine boiler feed pump should normally be stopped by __________.
  8. #8 The constant pressure governor of a turbine-driven feed pump maintains which of the following pressures at a constant value for all capacities?
  9. #9 When starting a turbo generator in an automated plant, you must provide lube oil pressure to the unit by means of __________.
  10. #10 The safety device provided on a turbo generator which closes the throttle automatically when the cooling water to the condenser is insufficient is cal...
  11. #11 A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance?
  12. #12 The over speed tripping device installed on an auxiliary turbine is automatically actuated by __________.
  13. #13 In which of the listed components is chemical energy converted to thermal energy with regards to boiler operation?
  14. #14 The purpose of a 'peep' hole in the boiler casing is to __________.
  15. #15 The steam drum in a D-type marine boiler __________.
  16. #16 In a single furnace boiler, where is the steam typically cooled for use as auxiliary steam?
  17. #17 The main steam stop bypass valve is used to __________.
  18. #18 The items labeled "C" and "L" as indicated on the illustration are commonly called ________. SG-0020 illustration
  19. #19 Which of the valves listed should be closed before lighting off a boiler?
  20. #20 When raising steam on an idle boiler and the steam pressure has risen to about 5 pounds more than the pressure of the boiler already on the line, you...
  21. #21 Which of the following precautions should be taken prior to lighting off a boiler?
  22. #22 If a boiler is brought on the line with its steam pressure much higher than that of the boiler already on the line, there is danger of __________.
  23. #23 While raising steam on a cold boiler, the air cock is to be closed after __________.
  24. #24 Which of the following statements about boilers is correct?
  25. #25 When a boiler has been secured and is being initially cooled, the water level showing in the steam drum gage glass should be __________.
  26. #26 After a boiler has been taken off the line and is cooling, the air cock is opened to __________.
  27. #27 The auxiliary exhaust system shown in the illustration can be supplied by steam from the __________. SG-0024 illustration
  28. #28 The primary source of steam to the auxiliary exhaust system is typically supplied directly from __________.
  29. #29 The purpose of the steam control valves installed in the auxiliary exhaust line is to __________.
  30. #30 Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed tank becomes flooded?
  31. #31 The primary objective of the auxiliary exhaust system is to supply steam to the __________.
  32. #32 If the pressure becomes excessive in the auxiliary exhaust system of a steam propulsion plant, the excess steam will normally be dumped to the _______...
  33. #33 The intermediate pressure bleed steam system, shown in the illustration, is used to supply steam at approximately __________. SG-0024 illustration
  34. #34 Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the __________.
  35. #35 While vacuum is being raised on the main unit and the turbine warmed, condensate is recirculated to the main condenser to __________.
  36. #36 The loop seal connected to the main condenser returns the drains from the __________.
  37. #37 The cooling water flow from an air ejector inter condenser and after condenser is discharged directly into the __________.
  38. #38 Main condensate recirculating systems are primarily intended to __________.
  39. #39 Steam condensed in the air ejector inter condenser, drains to the __________.
  40. #40 Which statement is true concerning two-stage air ejector assemblies?
  41. #41 Which statement listed represents a vital function of the main condenser?
  42. #42 A main condenser utilizing a scoop for the circulation of seawater must be constructed as a __________.
  43. #43 Water boxes on main condensers are vented to __________.
  44. #44 Which of the condensers listed is cooled by sea water?
  45. #45 Zincs are installed in the main and auxiliary condenser water boxes to __________.
  46. #46 While underway, vacuum in the main condenser is primarily caused by the __________.
  47. #47 Air in the main condenser is harmful because it will __________.
  48. #48 Makeup feed water is brought into an operating closed feed system via the __________.
  49. #49 Under normal conditions, the rate of heat transfer in a feed water heater is most greatly affected by the __________.
  50. #50 The items labeled "D" in the illustration are the __________. SG-0025 illustration
  51. #51 The connections labeled "A" in the illustration, are used to __________. SG-0025 illustration
  52. #52 The unit shown in the illustration is used as the __________. SG-0025 illustration
  53. #53 A slight vacuum is maintained in the shell of the first stage heater shown in the illustration. The primary reason for the vacuum is to __________. SG... illustration
  54. #54 Which of the following statements is correct concerning the operation of the level or drain regulator associated with the feed water heater shown in t... illustration
  55. #55 The upper section of the feed water heater indicated by "G" in the illustration is used as the __________. SG-0025 illustration
  56. #56 In the condensate system, the automatic recirculating valve can be actuated by the __________.
  57. #57 What type of sensor is normally used with the automatic recirculating valve in the main condensate line?
  58. #58 The automatic recirculating valve in the main condensate recirculating line is controlled by a temperature sensor which is located at the __________.
  59. #59 High pressure and low pressure drain systems are part of the __________.
  60. #60 Clean low pressure steam drains are collected in the __________.
  61. #61 In a main propulsion steam turbine installation, the condensate pump initially discharges to the __________.
  62. #62 Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constant pressure?
  63. #63 The leakage of air into the pump casing by way of the packing gland of a condensate pump is prevented by __________.
  64. #64 Condensate pumps have distinctly noticeable characteristics and can usually be recognized by their __________.
  65. #65 Condensate return lines from tank heating coils are led to the __________.
  66. #66 Which statement is true concerning drain inspection tanks?
  67. #67 If live steam is supplied directly to the tank heating coils, the collected drains in the 'clean' section of the contaminated drain inspection tank ar...
  68. #68 The purpose of a contaminated steam system is to __________.
  69. #69 As found in a reduction gear drive system, thrust bearings serve to __________.
  70. #70 Babbitt is a metal alloy commonly used for lining __________.
  71. #71 Which of the following methods is used to securely fasten the Babbitt lining of a reduction gear bearing to its shell?
  72. #72 Which of the following types of bearings are used as line shaft bearings?
  73. #73 Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the...
  74. #74 The component shown in the illustration, labeled "I", is the __________. SE-0013 illustration
  75. #75 Which of the following methods is used to lubricate main propulsion turbine reduction gears?
  76. #76 The purpose of the main reduction gears is to __________.
  77. #77 The component shown in the illustration, labeled "IV", is the __________. SE-0013 illustration
  78. #78 High pressure steam drains are normally discharged to the __________.
  79. #79 Why is it necessary to have a relief valve protecting the deaerating feed tank from internal pressure?
  80. #80 Which of the listed components would be considered the dividing line separating the condensate system from the feed water system?
  81. #81 The DC heater functions to __________.
  82. #82 The DC heater automatic level dump valve is used to __________.
  83. #83 Cooling water to the vent condenser in a DC heater is supplied by the _______.
  84. #84 When starting a turbine driven boiler feed pump, care should be taken to insure that the recirculating valve is open. Which of the following valves sh...
  85. #85 To prevent pulsations from developing in the boiler feed water lines, the discharge side of a reciprocating feed pump is equipped with a/an __________...
  86. #86 If a centrifugal main feed pump were operated at shutoff head with the recirculating line closed, which of the following conditions could occur?
  87. #87 The pressure in the feed water system must exceed boiler steam drum pressure in order to __________.
  88. #88 If manual control of the water level in a steaming boiler is required, the proper method of control is with the auxiliary feed __________.
  89. #89 Which system should be used when required to raise the water level in an idle boiler?
  90. #90 Under EMERGENCY operating conditions, the proper valve positions for controlling feed water to the boiler should be the __________.
  91. #91 In the system illustrated the valves at point "A" are __________. SG-0005 illustration
  92. #92 Which of the listed order of valves represents the proper installation of the main feed water supply line to a marine propulsion boiler?
  93. #93 When operating with the auxiliary feed line, feed water flow is controlled __________.
  94. #94 The main feed check valve functions to __________.
  95. #95 In the event of a failure of the pneumatic control system, a multi-element feed water regulator is designed to operate as a __________.
  96. #96 Why are two fuel oil heaters "E" provided in the fuel oil system shown in the illustration? SG-0009 illustration
  97. #97 Fuel oil settling tanks are used to __________.
  98. #98 The main reason for having a low suction line on the fuel oil service or settling tanks is to __________.
  99. #99 When you are transferring fuel oil to the settling tanks, precautions to be observed should include __________.
  100. #100 Which of the listed conditions aids in directing gland leakoff steam from the low pressure propulsion turbine to pass through the gland exhaust conden...

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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