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

USCG Steam Plants (Boilers & Turbines) (Set 3)

30:00

|

Question 1 of 30

Question Navigator

Correct Incorrect Pending Starred

Question 1 of 30

In a main propulsion steam turbine installation, the condensate pump initially discharges to the __________.

Browse Questions in Set 3

30 MCQs

#1 In a main propulsion steam turbine installation, the condensate pump initially discharges to the __________. #2 Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constant pressure? #3 The leakage of air into the pump casing by way of the packing gland of a condensate pump is prevented by __________. #4 Condensate pumps have distinctly noticeable characteristics and can usually be recognized by their __________. #5 Condensate return lines from tank heating coils are led to the __________. #6 Which statement is true concerning drain inspection tanks? #7 If live steam is supplied directly to the tank heating coils, the collected drains in the 'clean' section of the contaminated drain inspection tank are removed directly to the __________. #8 The purpose of a contaminated steam system is to __________. #9 As found in a reduction gear drive system, thrust bearings serve to __________. #10 Babbitt is a metal alloy commonly used for lining __________. #11 Which of the following methods is used to securely fasten the Babbitt lining of a reduction gear bearing to its shell? #12 Which of the following types of bearings are used as line shaft bearings? #13 Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the reduction gear? #14 The component shown in the illustration, labeled "I", is the __________. SE-0013 #15 Which of the following methods is used to lubricate main propulsion turbine reduction gears? #16 The purpose of the main reduction gears is to __________. #17 The component shown in the illustration, labeled "IV", is the __________. SE-0013 #18 High pressure steam drains are normally discharged to the __________. #19 Why is it necessary to have a relief valve protecting the deaerating feed tank from internal pressure? #20 Which of the listed components would be considered the dividing line separating the condensate system from the feed water system? #21 The DC heater functions to __________. #22 The DC heater automatic level dump valve is used to __________. #23 Cooling water to the vent condenser in a DC heater is supplied by the _______. #24 When starting a turbine driven boiler feed pump, care should be taken to insure that the recirculating valve is open. Which of the following valves should be closed when starting? #25 To prevent pulsations from developing in the boiler feed water lines, the discharge side of a reciprocating feed pump is equipped with a/an __________. #26 If a centrifugal main feed pump were operated at shutoff head with the recirculating line closed, which of the following conditions could occur? #27 The pressure in the feed water system must exceed boiler steam drum pressure in order to __________. #28 If manual control of the water level in a steaming boiler is required, the proper method of control is with the auxiliary feed __________. #29 Which system should be used when required to raise the water level in an idle boiler? #30 Under EMERGENCY operating conditions, the proper valve positions for controlling feed water to the boiler should be the __________.

Question Discussion & Notes

0

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...