Q605 - Steam Plants, USCG prep certification 2026

Progress: 24% (23/94)

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1. According to the data given in the illustration which of the following would be the physical state of the fluid at a gauge vacuum of 25.03 inches Hg, and 126.08 degrees FahrenheitNot learned 2. Steam line water hammer can be best prevented by __________.Not learned 3. An excess pressure governor would normally be used on a __________.Not learned 4. 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 5. 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 6. 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 7. In what section of a boiler would you find a steam quality of 90%?Not learned 8. Which of the following statements represents the purpose of boiler sliding feet?Not learned 9. Steam baffles are used in the steam drum of a water-tube boiler to __________.Not learned 10. Scavenging air lines are connected to boiler stack periscopes to __________.Not learned 11. Which of the methods listed would be most effective in repairing a steam cut on a seating surface of a superheater handhole plate?Not learned 12. One advantage of installing water wall tubes in a boiler furnace is to __________.Not learned 13. In most marine boilers, the primary reason the first few rows of generating tubes, called screen or furnace row tubes, are made larger in diameter than the rest of the generating tubes is because __________.Not learned 14. Which of the tools listed is used to remove a boiler tube from a header?Not learned 15. Which of the following problems can occur when an excessive number of water screen tubes are plugged?Not learned 16. Blisters developing on boiler tubes can be caused by __________.Not learned 17. Cratering and water tracking in boiler tubes is caused by __________.Not learned 18. Boiler refractory firebrick is secured to the casing by __________.Not learned 19. Boiler refractory previously baked out and fired is most sensitive to __________.Not learned 20. Which of the listed refractory materials can be used in an area directly exposed to the highest heat in the furnace?Not learned 21. Which of the listed refractory materials is composed of wool fibers and clay binders?Not learned 22. When you are installing a new furnace floor in an oil fired boiler, the clearance between the firebricks should be large enough to __________.Not learned 23. To assure a long service life for boiler refractory materials after installation, the most effective method is to __________.Not learned 24. Which of the listed procedures is the most important factor to take into consideration when making repairs to the refractory surrounding the burner openings?Not learned 25. A furnace wall in which there are open spaces around the brick as a result of firebrick shrinkage, is __________.Not learned 26. After patching refractory with plastic firebrick, holes are poked in the patch on 1 1/2 inch centers in order to __________.Not learned 27. Slag buildup on boiler furnace refractory is undesirable because it causes __________.Not learned 28. Which of the conditions listed occurs when glassy slag, formed by the burning of fuel oil contaminated with salt water, melts and runs over the furnace wall?Not learned 29. Which of the following locations could desuperheated steam be considered to occur?Not learned 30. The primary purpose of a control desuperheater installed in the steam drum of a boiler is to __________.Not learned 31. Which of the following would indicate a moderate leak in the desuperheater?Not learned 32. Desuperheated steam can be found at the __________.Not learned 33. Which of the precautions listed should be taken when gagging a boiler safety valve?Not learned 34. The purpose of the division plates installed in boiler superheater headers is to __________.Not learned 35. Fireside burning of boiler tubes is usually the direct result of __________.Not learned 36. An excessively high superheater temperature could be the result of __________.Not learned 37. Under normal operating conditions, a drop in the steam temperature leaving an uncontrolled interdeck superheater could be caused by a __________.Not learned 38. In the event of a failure of the pneumatic control system, a multi-element feedwater regulator is designed to operate as a _________.Not learned 39. The major heat loss in an oil-fired boiler is the heat __________.Not learned 40. A lower than normal boiler stack gas temperature usually indicates __________.Not learned 41. Insufficient combustion air supply to the furnace would cause __________.Not learned 42. If an analysis of boiler flue gas determines there is no excess air for combustion, you should expect the nitrogen content of the flue gas to be approximately __________.Not learned 43. A flue gas analysis is performed to determine the __________.Not learned 44. Generally, a 12% to 14% content of carbon dioxide in boiler flue gases indicates __________.Not learned 45. When testing boiler flue gas with a chemical absorption apparatus, to obtain accurate results __________.Not learned 46. The absence of carbon monoxide in the flue gas of a boiler indicates __________.Not learned 47. Which of the following chemicals is used in an Orsat apparatus to absorb carbon dioxide?Not learned 48. 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 49. The photoelectric cell installed as part of the combustion safety controls of an automatically fired boiler will __________.Not learned 50. 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 51. While your vessel is steaming with one boiler, the automatic combustion control system sensing line for the idle boiler is accidentally opened. How will this affect the steaming boiler?Not learned 52. 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 53. In a boiler automation system, if a burner fuel oil solenoid valve continually trips closed under normal steaming conditions, you should __________.Not learned 54. In a regenerative air heater, air is bypassed around the heater while __________.Not learned 55. Boiler fuel savings gained by the use of an economizer can amount to __________.Not learned 56. The boiler economizer provides additional heat to the __________.Not learned 57. Which of the conditions listed could cause steam formation in the economizer?Not learned 58. When installed, the economizer relief valve should always be set __________.Not learned 59. Which of the conditions listed would indicate excessive soot buildup on the economizer?Not learned 60. The BTU value of fuel oil is determined by a/an __________.Not learned 61. Which combustible element in fuel oil is considered a significant and major source of air pollution?Not learned 62. Which constituent of fuel oil determines the specific heat?Not learned 63. The most harmful slag forming compounds found in fuel oils are __________.Not learned 64. The flash point of a residual fuel oil should be used to determine the highest temperature to which the oil may be heated __________.Not learned 65. The minimum temperature requirements for fuel oil in storage tanks is related to the _________.Not learned 66. The viscosity of a residual fuel oil is measured in Saybolt __________.Not learned 67. When you are transferring fuel oil to the settling tanks, precautions to be observed should include __________.Not learned 68. Which of the pumps listed takes fuel oil suction from the double bottom tanks and discharges it to the settling tanks?Not learned 69. Fuel oil is transferred to the settling tanks for __________.Not learned 70. Which of the following actions should be taken FIRST when water is found in the fuel oil settling tank?Not learned 71. Which of the casualties listed is apt to occur immediately after a high water casualty?Not learned 72. High boiler water level can cause carryover and __________.Not learned 73. Rapid fluctuation in the superheater temperature of a steady steaming boiler indicates __________.Not learned 74. Oil accumulation in boiler water would __________.Not learned 75. An unusual vibration in the main propulsion turbine unit, accompanied by a rumbling sound in the reduction gear, could be caused by __________.Not learned 76. Excessive carbon dioxide formed by improper chemical treatment in the boiler may cause corrosion in the __________.Not learned 77. Testing boiler water for chloride content will indicate the amount of __________.Not learned 78. 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 79. Calcium minerals in boiler water are precipitated out of solution by the use of which of the listed chemicals?Not learned 80. Excessive foaming in a steaming boiler can cause damage to the __________.Not learned 81. Excessive alkalinity of boiler water will cause ________.Not learned 82. In a water-tube boiler, waterside scale formation is caused by __________.Not learned 83. Carbon dioxide dissolved in boiler water is dangerous in a modern power boiler because the gas __________.Not learned 84. Which of the listed mediums should be used when water washing a boiler?Not learned 85. 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 86. One boiler of a two-boiler plant has ruptured a tube, and the water cannot be maintained in sight in the gauge glass. After securing the fires, your next action should be to __________.Not learned 87. Which of the following actions should be carried out if the boiler water level is falling due to a tube failure?Not learned 88. When the rate of heat transfer through tube walls is so reduced that the metal becomes overheated, which of the following conditions will result in the boiler?Not learned 89. Boiler tube failures can result from __________.Not learned 90. 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 91. Your vessel is steaming full ahead and operating on both boilers. If the boiler water level of one boiler drops out of sight low in the sight glass and the burners have been secured, besides slowing down the main engine, what further action should be taken?Not learned 92. After restoring the normal water level in a boiler following a high water casualty, you should __________.Not learned 93. If a major flareback occurs to a boiler, which of the following actions should be immediately taken?Not learned 94. A water-tube boiler can be laid up either wet or dry. If it is to be laid up wet, you should __________.Not learned 95. In a boiler equipped with an automatic feed water regulator, erratic variations in the steam drum water level could be caused by __________.Not learned 96. If boiler water chemicals are decreasing in one boiler and increasing in the other boiler, while both are steaming at normal rates, a leak probably exists in the __________.Not learned 97. The most practical method of determining the condition of a shaft bearing while the shaft is in operation is to __________.Not learned 98. 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 99. An overheated bearing in the main propulsion unit is indicated by __________.Not learned 100. Babbitt is a metal alloy commonly used for lining __________.Not learned 101. 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 102. A common cause of the Babbitt linings cracking in a turbine journal bearing is from ________.Not learned 103. As found in a reduction gear drive system, thrust bearings serve to __________.Not learned 104. 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 105. A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance?Not learned 106. An efficient seal is normally obtained between the upper and lower halves of a turbine casing by __________.Not learned 107. Turbine casing flanges are sometimes provided with a system of joint grooving to __________.Not learned 108. Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of __________.Not learned 109. If the main propulsion turbine begins to vibrate severely while you are increasing speed, you should __________.Not learned 110. If a line shaft bearing begins to overheat, the shaft speed should be reduced. If overheating persists, you should then __________.Not learned 111. Which of the following operational practices is helpful in avoiding the accumulation of condensate in the main reduction gear casing?Not learned 112. 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 113. Excessive thrust bearing wear in a main propulsion turbine rotor should FIRST become apparent by __________.Not learned 114. Which of the listed operational checks should be made "continuously" on the main propulsion reduction gears?Not learned 115. 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 116. The purpose of the main reduction gears is to __________.Not learned 117. Most main propulsion reduction gear bearings are __________.Not learned 118. What is the significance of pinion deflection in the operation of reduction gears?Not learned 119. Which of the following is used to hold the poppet valves closed in a turbo-generators nozzle control speed regulator?Not learned 120. A sequential lift, nozzle valve control bar on a turbo-generator, utilizes which of the following operating principles?Not learned 121. When a turbine rotor is not rotating during maneuvering, the heat tends to be concentrated at the __________.Not learned 122. 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 123. What must you do before placing the jacking gear in operation on a main turbine unit?Not learned 124. If steam is admitted to the main propulsion turbine with the jacking gear engaged, which of the following problems can occur?Not learned 125. What should you do prior to rolling the main turbines in preparation for getting underway?Not learned 126. After properly lining up the main propulsion turbine for warm up, steam should first be admitted to the rotor through the ________.Not learned 127. The main propulsion turbine can be damaged by __________.Not learned 128. 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 129. What should you do when a turbine bearing shows signs of overheating?Not learned 130. In an auxiliary diesel engine, one reason for knurling the piston skirt is to __________.Not learned 131. The valve cam slope angle determines the __________.Not learned 132. The intake and exhaust valves used in a diesel engine are returned to their seats by __________.Not learned 133. In a four-stroke cycle diesel engine, badly worn intake valve guides can cause excessive __________.Not learned 134. In diesel engines, hydraulic valve lifters are used to __________.Not learned 135. 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 136. High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by __________.Not learned 137. A diesel engine may fail to start when being cranked, due to __________.Not learned 138. Before any auxiliary diesel engine hydraulic starting system is opened for servicing or repair, you must __________.Not learned 139. 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 140. On small diesel engines, a noticeable decrease in the time interval between the replacement of the lube filter cartridge indicates __________.Not learned 141. (1.2.15-9) On US flag steam propulsion vessels, the main reason for having a low suction line on the fuel oil service or settling tanks is to accomplish which of the following?Not learned 142. In the auxiliary diesel engine, shown in the illustration, the __________Not learned 143. 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 144. The Fairbanks Morse part labeled "G", as shown in the illustration, is a __________Not learned 145. Which action should be taken if the water level in the boiler gauge glass drops out of sight and the burners fail to secure automatically?Not learned 146. The base ring shown in the illustration is identified by the letter __________Not learned 147. If a boiler generates saturated steam at 75.3 psig, how much heat is required to change the water into steam if the feedwater temperature is 220°FNot learned 148. On a boiler safety valve, the blowdown adjusting ring is locked in place by a __________.Not learned 149. In the boiler shown in the illustration, the arrow "E" indicates a __________Not learned 150. When a boiler water test indicates a pH value of 6, you should __________.Not learned 151. When burning fuel oil in a boiler, a high CO2 content is desired in the stack gas because __________.Not learned 152. As Chief Engineer, while at sea, the engine room reports the superheater outlet temperature is erratic and fluctuating. Which of the following could be a possible cause?Not learned 153. The component labeled "II", as shown in the illustration, is called the __________Not learned 154. 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 155. Which of the following statements is true concerning the coupling shown in the illustrationNot learned 156. As found in a basic pneumatic automatic combustion control system, the function of a standardizing relay is to __________.Not learned 157. 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 158. 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 159. One factor for determining the minimum feedwater inlet temperature to a boiler economizer is the __________.Not learned 160. 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 161. The part shown in the illustration would be located between which of the following components of a modern geared turbine main propulsion unitNot learned 162. A pilot valve and servomotor are utilized in mechanical-hydraulic governing systems on a turbo- generator unit in order to __________.Not learned 163. What is the primary operational difference between a nozzle reaction safety valve and a huddling chamber safety valve?Not learned 164. The reduction gear shown in the illustration is a/an __________Not learned 165. Which of the statements listed applies to the quill shaft shown in the illustrationNot learned 166. On a steam vessel with two high pressure boilers, one suspects a superheater leak. How would you determine which boiler may be leaking and what would be the indication(s)?Not learned 167. To stop the rotor of a main turbine while underway at sea you should __________.Not learned 168. Where is the superheater located in the boiler shown in the illustrationNot learned 169. In the thrust bearing assembly illustrated the total oil clearance can be correctly decreased by __________Not learned 170. According to the data given in illustration, which of the following would be the physical state of the fluid at a gauge vacuum of 28.09 inches Hg, and 117.99 degrees FahrenheitNot learned 171. If a boiler generates saturated steam at 125.3 psig, how much heat is required to change the water into steam if the feed water temperature is 240°FNot learned