Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Steam Plants (Boilers & Turbines) (Set 7)
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If the water level in a steaming boiler is dropping rapidly and cannot be kept at the normal level by standard practices, you should __________.
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30 MCQs #1 If the water level in a steaming boiler is dropping rapidly and cannot be kept at the normal level by standard practices, you should __________. #2 Which steam plant watch operating condition will require priority attention over the other situations listed? #3 Prior to relieving the watch you should first check the fire room status by verifying the boiler steam drum level and _________. #4 If an oil fire occurs in the double casing of a steaming boiler, you should __________. #5 Any abnormal condition or emergency occurring in the fire room must be immediately reported to the __________. #6 Which of the following procedures represents the proper care of unused burners during low load conditions? #7 To properly clean a burner tip, you should use __________. #8 To properly remove the burner tip nut from the burner barrel, the barrel should be __________. #9 If you noted a large difference in the pressures indicated by a duplex pressure gage to the fuel oil system strainer, you should __________. #10 Which of the conditions listed would indicate a dirty fuel oil strainer? #11 If water hammer develops while opening the valve in a steam line, which of the following actions should be taken? #12 Noise caused by condensate striking bends or fittings in a steam pipe line is called __________. #13 Which of the following statements represents the function the nozzle assembly performs in an impulse turbine? #14 The labyrinth packing ring in an interstage diaphragm of an impulse turbine is prevented from rotating by _______. #15 Shrouding on impulse turbine blading is held in place by __________. #16 Tenon peening is a technique employed by turbine manufacturers to __________. #17 Which of the steam losses listed would be associated with a multistage impulse turbine rather than a multistage reaction turbine? #18 The purpose of shroud bands secured to the tips of the turbine blades is to __________. #19 Steam passing through a multistage impulse turbine does not impart any appreciable axial thrust to the rotor. This is primarily due to the __________. #20 In an impulse turbine, the fixed blades function to __________. #21 The type of turbine shown in the illustration is classified as a __________. Illustration SE-0003 #22 A pressure-velocity compounded impulse turbine consists of __________. #23 How many Curtis stages are contained in the turbine shown in the illustration? Illustration SE-0003 #24 Design characteristics of a velocity-compounded impulse turbine include the utilization of __________. #25 Nozzle diaphragms are installed in pressure-compounded impulse turbines to __________. #26 An impulse-reaction turbine is characterized by which of the following arrangements? #27 In what classification of steam turbines are the moving blades and the adjacent fixed rows of blades shaped to act as nozzles? #28 In which type of turbine does a pressure drop exist through the fixed blades and the moving blades? #29 An energy loss associated with a reaction turbine, but not an impulse turbine, is __________. #30 What is used to compensate for the increased possibility of blade vibration occurring with impulse turbine blading?
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