Q631 - Steam Plants, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. Under normal conditions, the rate of heat transfer in a feedwater heater is most greatly affected by the __________.Not learned 2. The main feed check valve functions to __________.Not learned 3. Which of the following is the advantage of operating a typical closed feedwater system for a marine boiler when compared to an open feedwater system?Not learned 4. By which of the listed methods may heat be transferred from one body to another?Not learned 5. Which of the following statements is correct concerning heat transfer?Not learned 6. As steam accomplishes work in an engine or turbine, the pressure of the steam is reduced because it __________.Not learned 7. Why is superheated steam used in the main propulsion turbines instead of saturated steam?Not learned 8. Which type of energy conversion is associated with an operating steam boiler?Not learned 9. Steam tables can be used to obtain the __________.Not learned 10. The best conductor of heat in a marine boiler is __________.Not learned 11. The correct method of expanding a generating tube at the boiler drum tube sheet is to roll __________.Not learned 12. The MOST common cause of heat blisters developing on boiler generating tubes is due to __________.Not learned 13. The useful life of furnace refractory is affected most by __________.Not learned 14. To make temporary emergency repairs to brickwork in a boiler furnace, which of the materials listed should be used?Not learned 15. The purpose of the boiler drum air cock is to __________.Not learned 16. Which of the following is the best reason for opening the air cock when draining a water-tube boiler?Not learned 17. A boiler safety valve must be capable of __________.Not learned 18. 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 19. A variable capacity, pressure atomizing, fuel oil burner functions to __________.Not learned 20. You are standing watch in the engine room of a steam vessel. You should blow down a gauge glass periodically to __________.Not learned 21. In the event of a failure of the pneumatic control system, a multi-element feedwater regulator is designed to operate as a _________.Not learned 22. Which color burner flame would indicate too much excess air?Not learned 23. In a boiler furnace, incomplete combustion due to insufficient air yields an excess amount of __________.Not learned 24. A higher than normal stack gas temperature could indicate __________.Not learned 25. As the percentage of CO2 in the stack gas decreases, you can assume that __________.Not learned 26. 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 27. Why should the fuel oil be recirculated before lighting off a cold boiler?Not learned 28. Oil accumulation in boiler water would __________.Not learned 29. Testing boiler water for chloride content will indicate the amount of __________.Not learned 30. Normally a boiler water sample should be taken __________.Not learned 31. The most troublesome corrosive substances in boiler water are oxygen and __________.Not learned 32. Treatment of boiler feedwater for the control of hardness is necessary to prevent __________.Not learned 33. The bottom blow valve on a water-tube boiler is usually attached to the __________.Not learned 34. When a propulsion boiler is removed from service for an extended period, why should the firesides be thoroughly dried after water washing?Not learned 35. Which procedure should be followed to dry out the fireside of a boiler after water washing?Not learned 36. When cleaning the inside surfaces of the boiler tubes of a water-tube boiler with a powered rotary brush, the brush should be kept in motion to __________.Not learned 37. Boiler tube failures can result from __________.Not learned 38. Which of the following statements about boilers is correct?Not learned 39. Which of the following precautions should be taken prior to lighting off a boiler?Not learned 40. When increasing the firing rate of a boiler, which of the following should be carried out FIRST?Not learned 41. Water in the fuel supply to a steaming boiler can be detected by __________.Not learned 42. In a boiler equipped with an automatic feed water regulator, erratic variations in the steam drum water level could be caused by __________.Not learned 43. Babbitt is a metal alloy commonly used for lining __________.Not learned 44. 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 45. 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 46. Design characteristics of a velocity-compounded impulse turbine include the utilization of __________.Not learned 47. 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 48. Most auxiliary turbine feed pumps do not require an external source of gland sealing steam because they __________.Not learned 49. Turbine casing flanges are sometimes provided with a system of joint grooving to __________.Not learned 50. Nozzle diaphragms are installed in pressure-compounded impulse turbines to __________.Not learned 51. The correct radial clearances between the rotor and the casing in a propulsion turbine are maintained by the turbine __________.Not learned 52. Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of __________.Not learned 53. On main turbine propulsion units, gear-type flexible couplings are generally used between the __________.Not learned 54. What type of strainer is used in a turbine lube oil system to remove metallic particles?Not learned 55. When the temperature of the main turbine lubricating oil is lowered, an increase will occur in the __________.Not learned 56. Which of the filters listed will deplete the additives in lubricating oil?Not learned 57. Lube oil is preheated before centrifuging in order to __________.Not learned 58. If contaminated lube oil were allowed to settle undisturbed in a tank, into which layers would the contaminants separate?Not learned 59. 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 60. The purpose of the separating nozzle in the accumulator of a water-tube, coil-type, steam generator is to separate __________.Not learned 61. Which of the following statements concerning fire-tube boilers is correct?Not learned 62. Bottom blow valves are installed on auxiliary water-tube boilers to _______.Not learned 63. The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________.Not learned 64. 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 65. The pressuretrol which is installed on an auxiliary boiler senses steam pressure changes and __________.Not learned 66. Steam drum water level indicators must be calibrated to compensate for density differences between the indicated drum water level, and the actual drum water level. If no compensation is made, the indicator will show a __________.Not learned 67. A photoelectric cell installed in an automatically fired auxiliary boiler burner management system __________.Not learned 68. With reference to the chart, if a boiler generates saturated steam at 385.3 psig, how much heat per pound was required to change the water into steam if the feedwater temperature was initially 220°FNot learned 69. 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 70. On a boiler safety valve, the blowdown adjusting ring is locked in place by a __________.Not learned 71. The boiler water gauge glasses should be blown down __________.Not learned 72. In a coil-type forced circulation water-tube boiler, __________.Not learned 73. Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.Not learned 74. Which of the coupling types listed is shown in the illustrationNot learned 75. 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 76. Where do fuel oil vapors tend to accumulate in an engine room?Not learned 77. Journal bearings used with turbine rotors are manufactured in two halves in order to __________.Not learned 78. How many Curtis stages are contained in the turbine shown in the illustrationNot learned 79. When monitoring a steam propulsion plant lubricating oil pressures, what pressure is the most critical to check regularly while underway?Not learned 80. When monitoring steam propulsion plant lubricating oil temperatures while underway, what represents the temperature rise across an individual bearing?Not learned 81. When operating with the auxiliary feed line, feed water flow is controlled __________.Not learned 82. Precautions to be observed prior to starting a turbine driven feed pump, should include __________.Not learned 83. To prevent a small plastic refractory wall patch repair from falling into the furnace of a boiler, you should __________.Not learned 84. The property of a fuel oil which is a measurement of its available energy, is known as its __________.Not learned 85. The purpose of the mica used in a boiler water gauge glass assembly is to prevent __________.Not learned 86. A secondary function of the refractory installed in a marine boiler is to __________.Not learned 87. As shown on the illustrated boiler steam drum gauge glass, what do items "D" and "M" representNot learned 88. What statement concerning the operation of a propulsion steam turbine turning (jacking) gear is true?Not learned 89. In terms of the completeness of combustion, in viewing the flame through the peephole, what would be the indication of the MOST complete combustion?Not learned 90. In terms of the diluting effect of excessive excess air, when viewing the flame through a peephole, what would be the indication of the greatest diluting effect with far too much excess air?Not learned 91. 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