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test 5 pt 2
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  • 問題数 97 • 2/20/2025

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    問題一覧

  • 1

    What is the acceptable percentages for a BS&W?

    BS&N 0.2%

  • 2

    What color does oil turn when it has copper or tin in it?

    blue green

  • 3

    Where are sample connections fitted?

    Lowest point of the sum

  • 4

    What is the allowable passing criteria for a particle in a visual test?

    PARTICLE NOT GREATER THAN 1⁄8 inches

  • 5

    When is a casualty sample drawn from a LSB?

    daily

  • 6

    How long must you wait to take a sample on operating equipment that you added oil to?

    10 min

  • 7

    How fast does the centrifuge spin during a BS&W test?

    1500 RPM

  • 8

    How often do you sample equipment using 2000 series oil?

    daily

  • 9

    What equipment is used to conduct a flash point test?

    NAVI flash

  • 10

    LO purifier efficiency should be tested after starting and every thereafter?

    EOOW, 30 min. & 4 hours

  • 11

    What provides a standardized oil analysis testing procedure for the Navy. Army, and Air Force?

    JOAP (Journal Oil Analysis Program)

  • 12

    How long are LO logs kept on board?

    2 years

  • 13

    What is the purpose of the lube oil heater?

    Circulating type LO electric heater and controller in each engine room

  • 14

    What purification process is when you transfer oil from the sump to the settling tank?

    Batch renovation

  • 15

    What part of the AMCW prevents overheating of the pump?

    Recirculation line

  • 16

    What type of heat exchanger is used in the AMCW?

    Tube - Type exchange

  • 17

    What type of pump is used in the AMCW?

    main feed pump

  • 18

    What limits flow through the recirculation line?

    Orifice

  • 19

    Where does the cooling system begin?

    Auxiliary seawater coding main

  • 20

    The recirculation line is used to bypass the reducing valve (TRUE/FALSE)

    false

  • 21

    At what differential pressure are Helen strainers required to be cleaned at?

    3 PSID

  • 22

    What system is used as a back up to the AMCW?

    Auxiliary seawater main

  • 23

    What prevents the orifice from getting clogged?

    Recirculating line limit the flow of water

  • 24

    At what pressure does high pressure air operate at?

    1001

  • 25

    What is the primary function of a dehydrafor?

    Remove oil and water from air

  • 26

    What color valve is LP air?

    tan

  • 27

    What is the function of the priority valve?

    Used to ensure vital services receive LP air before non-vital service

  • 28

    What is used to cool compressed air between the different stages?

    Intercoolers sea water

  • 29

    What is normal operating LP air Pressure?

    150 PSIG and below

  • 30

    How many HP compressors on normally on a ship?

    2

  • 31

    How long is the Blow-Down valve operated on the compressor?

    10-20 seconds

  • 32

    What is the maximum number of stages of a HP compressor?

    6

  • 33

    How often are readings taken on an HPAC?

    hourly

  • 34

    What valves are used to control or limit flow to the compressed air system?

    relief valves

  • 35

    When working on HP air system, the system should be tagged out and depressurized. (TRUE/FALSE)

    true

  • 36

    What is distillate?

    Remove salt from seawater / purified

  • 37

    What PSI is needed to separate salt from seawater in the RO system?

    350 - 400 PSIG

  • 38

    What is the waste material that is pumped over board from the distilling process?

    brine

  • 39

    How often are readings taken on an HPAC?

    LP flash type

  • 40

    What component maintains the filters and is vital to the performance of the RO Plant?

    The Membrane

  • 41

    Which component is the central control of the RO plant?

    main control panel

  • 42

    How many flow meters are in the RO plant?

    2

  • 43

    The lowest temperature at which a liquid gives off vapors that could ignite is called?

    flash point

  • 44

    Pressure exerted on a confined liquid is transmitted in all directions, and acts with equal force on all areas, is an example of what law?

    pascal’s law

  • 45

    What type of actuator is used to apply linear force to a mechanism?

    RAM cylinder

  • 46

    What is force measured in?

    pounds in tons

  • 47

    Laminar flow is an erratic and turbulent flow. (TRUE/FALSE)

    false

  • 48

    What rating measures the ability of the element to remove the contaminants?

    efficiency rating

  • 49

    What valve maintains hydraulic system pressure?

    unloading valves

  • 50

    What converts hydraulic energy generated by a pump back into mechanical energy?

    actuator

  • 51

    What documentation is used to preform maintenance on the hydraulic system?

    PMS (PLANNED MAINTENANCE SYSTEM)

  • 52

    What component is used to remove large contaminants from the suction side of a hydraulic pump?

    strainer

  • 53

    What is used to align the hydraulic system?

    EOSS

  • 54

    What fluids can be used in the hydraulic system?

    Pretoleum- Based, Water Based and Synthetics (Five resistance fluid / Hydrocarbon Fluid)

  • 55

    What is the measurement of Fluid's resistance to flow?

    viscosity drag

  • 56

    What converts linear movement of the ram to radial movement of the rudderpost?

    piston

  • 57

    What type of pump is the HPU main pump?

    Axial piston pump

  • 58

    How many modes of operation does a vertical package conveyor have?

    4

  • 59

    How many modes of steering gear operation do DDG-51 class ships have?

    5

  • 60

    What maintains the ship's heading and carries out course changes?

    steering gear

  • 61

    What component will compare the ordered and actual rudder angle indicators?

    TURN HELM WHEEL

  • 62

    What color valve is hydraulies?

    orange

  • 63

    The conveyor load/unload device has how many position?

    Load, Unload, Stowed, and offload

  • 64

    The convoy are trays that can hold_____lbs, and the overall weight of the conveyor is?

    Up to 400 lbs, 100 Ibs

  • 65

    How many LBS will activate the down-over travel interlock?

    15 lbs

  • 66

    What prevents conveyor doors from closing if the load/unload device is not in stowed?

    door block

  • 67

    How long does the warning horn sound for the conveyor?

    3 - 3 1/2 seconds

  • 68

    What drum is fitted with whelps to engage the anchor chain?

    Outer surface of the wildcat

  • 69

    What allows the wildcat to disengage from the windlass drive?

    Wildcat cluth lever

  • 70

    What component is used to control the raise and lowering of the anchor?

    Anchor windlass

  • 71

    What term describes lowering the anchor?

    paying out

  • 72

    What term describes raising the anchor?

    heaving in

  • 73

    When the wildcat lever is disengaged, what component can operate independently?

    capstan

  • 74

    What component is used for mooring, towing, and warping operations?

    capstan

  • 75

    What type of coupling on the anchor windlass system, allows for no misalignment?

    Rigid flange coupling

  • 76

    What component will keep your anchor from free falling?

    Hand brake

  • 77

    What converts high speed operations of the hydraulic system, to low speed operations of the capstan?

    gear box or MG

  • 78

    Who conducts oil analysis?

    oil king / JOAP

  • 79

    What mode should the heat be kept in to facilitate a quick start?

    warm up mode

  • 80

    Which pump provides oil flow for the purification process?

    supply transfer pump

  • 81

    What tank is used in the batch purification process?

    setting tanks

  • 82

    What NTSM talks about grease?

    NSTM 262

  • 83

    Polishers are designed to remove water and solids from LO with what?

    Absorbent canister and filters

  • 84

    How long is LO heated in the settling tank?

    24 hours

  • 85

    Who is the primary keeper for the LOQM program?

    EO, Engineering officer/ MPA

  • 86

    Who ensures all WCS are trained and qualified?

    LPO/LCPO

  • 87

    What holds the purifier bowl still while preforming maintenance?

    Bowl locking screws

  • 88

    How many disks are in the purifier assembly?

    32

  • 89

    What gear assembly drives the purifier?

    worm wheel

  • 90

    The priming valve on the purifier creates what type of seal?

    Water type seal

  • 91

    All machinery containing lubricating oil fluids must be fitted with a sample connection (TRUE/FALSE)

    true

  • 92

    On the delaval purifier, what does the regulating tube direct into the rotating bowl?

    durty oil

  • 93

    What is the flow rate of the delaval purifer?

    225

  • 94

    What is used to start the lurifier?

    EOSS

  • 95

    What does the purifier do?

    Removes Water through stripping and to remove solids with strewers and filter from LO

  • 96

    How many times will the speed indicator plunge during normal operating speeds

    72

  • 97

    How many RPMs does the purifier operate at?

    1800