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

USCG Steam Plants (Boilers & Turbines) (Set 19)

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Question 1 of 30

The water level in a steaming boiler has risen to within 2 inches of the top of the top gage glass. Your immediate action should be to __________.

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30 MCQs

#1 The water level in a steaming boiler has risen to within 2 inches of the top of the top gage glass. Your immediate action should be to __________. #2 On a steam vessel, if a centrifugal main feed pump were operating at shutoff head with the recirculating line closed, which of the following conditions could occur? #3 Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the __________. #4 Which statement is true concerning two-stage air ejector assemblies? #5 Serious tube leaks in the air ejector condenser assembly will cause __________. #6 Why does air entry into the main condenser reduce the efficiency of the steam cycle? #7 Which of the devices listed is used to keep overheated condensate from flowing to the deaerating feed tank? #8 Which statement listed represents a vital function of the main condenser? #9 The leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by __________. #10 If the main condenser were operating at a vacuum of 28.5"Hg, a condensate discharge temperature of 86°F, a seawater inlet temperature of 72°F, and a seawater outlet temperature of 79°F, what would be the condensate depression? Illustration SG-0026 #11 Air accumulated in the after condenser of the air ejector unit is discharged directly to the __________. #12 One of the basic rules applying to the operation of a single-pass main condenser is that the __________. #13 Maintaining low pressure in a condensing turbine exhaust trunk __________. #14 The connections labeled "A" in the illustration, are used to __________. SG-0025 #15 The unit shown in the illustration is used as the __________. SG-0025 #16 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-0025 #17 The steam separator as used in conjunction with a steam whistle normally drains to which of the listed drain systems? #18 Which of the following statements represents the function of a turbine gland exhaust condenser? #19 What type of sensor is normally used with the automatic recirculating valve in the main condensate line? #20 High pressure and low pressure drain systems are part of the __________. #21 Which of the components listed prevents water from flowing back into the auxiliary exhaust line if the deaerating feed tank becomes flooded? #22 Cooling water to the vent condenser in a DC heater is supplied by the _______. #23 In a main propulsion steam turbine installation, the condensate pump initially discharges to the __________. #24 The leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by __________. #25 Condensate pumps have distinctly noticeable characteristics and can usually be recognized by their __________. #26 If a ship is to be laid up for an indefinite period, the steam side of the main condenser should be __________. #27 Vapor blowing from the air ejector condenser vent may be caused by __________. #28 Scale in the air ejector first-stage nozzle could cause a decrease in the __________. #29 If the cooling water flow through the air ejector inter condensers and after condensers is inadequate, which of the problems listed will occur? #30 Excessively hot water returning to an atmospheric drain tank indicates __________.

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