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

USCG General Subjects (Auxiliaries & Systems) (Set 15)

30:00

|

Question 1 of 30

Question Navigator

Correct Incorrect Pending Starred

Question 1 of 30

The first step when resetting the slide valves on a duplex reciprocating pump is to __________.

Browse Questions in Set 15

30 MCQs

#1 The first step when resetting the slide valves on a duplex reciprocating pump is to __________. #2 When repacking a reciprocating pump with more than four rings of packing, the packing is cut square, installed with the ends abutted, and each succeeding ring staggered with the butted ends __________. #3 Which of the listed types of steam end piston rod packing should be used in a steam reciprocating pump? #4 A spur gear pump should be operated with the discharge valves __________. #5 Excessive lost motion in the valve mechanism of a duplex reciprocating pump will cause the __________. #6 When the danger of freezing exists, all steam driven reciprocating pumps and deck equipment should be __________. #7 An inadequate reciprocating bilge pump discharge is most often caused by __________. #8 Which of the following conditions would prevent a steam reciprocating pump from delivering its rated capacity? #9 A pounding noise occurring in one cylinder of a steam reciprocating general service pump could be caused by __________. #10 When piston rod packing persists in leaking on a reciprocating steam pump, the cause may be __________. #11 You suspect a problem with the centrifugal fire pump on your ship, and begin to slowly close the discharge valve. Your suspicion is confirmed when the __________. #12 A centrifugal bilge pump requires priming __________. #13 Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems? #14 A centrifugal pump may fail to deliver water when first started if the __________. #15 The total length of stroke in a reciprocating steam pump can be adjusted by __________. #16 Which of the listed reciprocating pump parts control the position of the pilot slide valve? #17 Which of the listed devices is used to control the admission of steam to the steam cylinder of a reciprocating pump? #18 Which of the following valve arrangements permits the reciprocating pump liquid piston to take suction from the suction chamber, and simultaneously discharge through the discharge chamber during the up and down strokes? #19 The three basic parts of any eductor are the nozzle, the suction chamber, and the __________. #20 A distinguishing feature of an eductor, when compared to other pumps, is the __________. #21 Which of the following methods applies to how a vacuum is created by a jet pump or an eductor? #22 The flame screens installed on sewage system tank vents prevent explosions by __________. #23 If water continues to flow excessively from the device shown in the illustration, the problem is most likely due to __________. GS-0155 #24 Which type of Marine Sanitation Device (MSD) is used solely for the storage of sewage and flush water at ambient air pressure and temperature? #25 A constant pressure range is maintained in the potable water system of many vessels by using __________. #26 If water continues to trickle into the toilet bowl after the device shown in the illustration has apparently closed, the problem is likely due to __________. GS-0155 #27 A vessel is in compliance with federal regulations regarding the discharge of sewage by __________. #28 Expansion tanks when used in a ship's low temperature hot water heating system may be of the open or closed type. In a closed type system, what would be the normal temperature range of the water? #29 What type of pump is invariably used as a circulator in a hydronic heating system? #30 What statement is true concerning a one-pipe hydronic heating system?

Question Discussion & Notes

0

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

Loading mariner discussions...