Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Steam Plants (Boilers & Turbines) (Set 1)

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Question 1 of 30

By which of the listed methods may heat be transferred from one body to another?

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30 MCQs

#1 By which of the listed methods may heat be transferred from one body to another? #2 Which of the following statements is correct concerning heat transfer? #3 Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance? #4 Auxiliary steam at full operating pressure is supplied from the boiler directly to the __________. #5 Which of the following statements is true concerning the piping system shown in the illustration? SG-0005 #6 Precautions to be observed prior to starting a turbine driven feed pump, should include __________. #7 An auxiliary turbine boiler feed pump should normally be stopped by __________. #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 When starting a turbo generator in an automated plant, you must provide lube oil pressure to the unit by means of __________. #10 The safety device provided on a turbo generator which closes the throttle automatically when the cooling water to the condenser is insufficient is called a/an __________. #11 A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance? #12 The over speed tripping device installed on an auxiliary turbine is automatically actuated by __________. #13 In which of the listed components is chemical energy converted to thermal energy with regards to boiler operation? #14 The purpose of a 'peep' hole in the boiler casing is to __________. #15 The steam drum in a D-type marine boiler __________. #16 In a single furnace boiler, where is the steam typically cooled for use as auxiliary steam? #17 The main steam stop bypass valve is used to __________. #18 The items labeled "C" and "L" as indicated on the illustration are commonly called ________. SG-0020 #19 Which of the valves listed should be closed before lighting off a boiler? #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 can __________. #21 Which of the following precautions should be taken prior to lighting off a boiler? #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 While raising steam on a cold boiler, the air cock is to be closed after __________. #24 Which of the following statements about boilers is correct? #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 After a boiler has been taken off the line and is cooling, the air cock is opened to __________. #27 The auxiliary exhaust system shown in the illustration can be supplied by steam from the __________. SG-0024 #28 The primary source of steam to the auxiliary exhaust system is typically supplied directly from __________. #29 The purpose of the steam control valves installed in the auxiliary exhaust line is to __________. #30 Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed tank becomes flooded?

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