Dual electro-hydraulic steering units usually operate ______．A.With both pumps on line at the same timeB.With one pump on standbyC.With the follow-up gear disconnectedD.Only when the rudder is moved amidships

题目

Dual electro-hydraulic steering units usually operate ______．

A.With both pumps on line at the same time

B.With one pump on standby

C.With the follow-up gear disconnected

D.Only when the rudder is moved amidships

相似考题

1.Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.A.gearsB.ramsC.barrelsD.cams

2.Air trapped in the hydraulic fluid of a steering system may be indicated byA.the steering pumps overspeedingB.a jammed open relief valveC.a constantly occurring improper rudder responseD.excessive ram pressure

3.In () technology, two separate and complete processing units run in parallel on a Single chip.A.Hyper-threadingB.CachingC.Multi-taskingD.Dual-core

4.Usually, emergency electricity supplies to_______on boardA.Cargo winchB.WindlassC.Steering gearD.Main air compressor

更多“Dual electro－hydraulic steering units usually operate ______.A.With both pumps on line at ”相关问题

  • 第1题：

    When the helm is turned on the navigation bridge，which of the listed actions will be the FIRST response in the steering room on a ship equipped with an electro-hydraulic steering gear ________．

    A.The pumps go to full stroke

    B.The six-way valve aligns itself with the running pump

    C.Both port and starboard cables are energized

    D.The synchronous receiver turns，duplicating the helm motion


    正确答案：D

  • 第2题：

    In （） technology, two separate and complete processing units run in parallel on a Single chip.

    • A、Hyper-threading
    • B、Caching
    • C、Multi-tasking
    • D、Dual-core

    正确答案:D

  • 第3题：

    单选题
    The center line condition of the transmission shaft can be checked by（）
    A

    the border flange’s excursion and flection

    B

    the both end shafts line’s accordance

    C

    the border flange’s flection and the both end shafts line’s accordance

    D

    the border flange’s accordance and both end shafts flection degree


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    Failure of fuel injection is usually due to trouble in the （）.
    A

    exhaust valves

    B

    mechanical lubricators

    C

    cooling water pumps

    D

    fuel injection pumps


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    Hydraulically, servo-operated, automatic, change over valves, utilized in a two ram hydraulic steering gear, serve to（）
    A

    allow an alternate main pump to start in the fully loaded condition thus developing immediate full torque

    B

    prevent either main pump from being hydraulically motored when idle by cross pressure flow

    C

    prevent both units from operating simultaneously which could result in doubling the flow of oil and pressure leading to over pressurization of the system

    D

    all of the above


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    Air trapped in the hydraulic fluid of a steering system may be indicated by（）
    A

    the steering pumps overspeeding

    B

    a jammed open relief vale

    C

    a constantly occurring improper rudder response

    D

    excessive ram pressure


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    If a severe leak develops in the electro-hydraulic steering gear unit is necessary when（）
    A

    Loss of vessel steering

    B

    Overheating of the gyrocompass

    C

    Jamming of the six-way vale

    D

    Jamming of the follow-up device


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following types of hydraulic pumps would be used in a steering system?（）
    A

    Lobe

    B

    Screw

    C

    Radial piston

    D

    Volute


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    In an electro-hydraulic steering system, under movement is maintained in close synchronization with the steering wheel position by means of the （）.
    A

    trick-wheel

    B

    follow-up control

    C

    six-way valve

    D

    Rapson slide


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    If one hydraulic pump of an electro-hydraulic steering unit falls, the vessels steering can be initially and best maintained by using the （）.
    A

    trick wheel

    B

    accumulator

    C

    standby pump

    D

    telemotor


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?（）
    A

    Rudder angle indicator

    B

    Follow-up gear

    C

    Electric transmitter

    D

    Rudder angle limit switch


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    If a steering motor becomes overloaded, the （）
    A

    overload condition of 5 % will trip the motor off the line immediately

    B

    overload condition will be indicated visually in the machinery space

    C

    motor running indicator will begin to flash on and off in response to the sustained overload condition

    D

    standby steering pump will start automatically and come on the line


    正确答案： C
    解析： 暂无解析

  • 第13题：

    In an electro-hydraulic steering system, rudder movement is maitained in close synchronization with the steering wheel position by means of the ______.

    A.trick wheel

    B.follow-up control

    C.six-way valve

    D.Rapson slide


    正确答案：B
    在一个电动液压转向系统，舵运动通过随动装置保持与方向盘位置同步。

  • 第14题：

    单选题
    When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）
    A

    The six-way valve opens

    B

    The steering service pump motor is stopped

    C

    The follow-up gear takes the pump off stroke

    D

    The cylinder relief valves bypass oil to the suction side the pump


    正确答案： D
    解析： 暂无解析

  • 第15题：

    单选题
    Hydraulic pumps most commonly used in steering systems are of the （）.
    A

    lobe type

    B

    screw type

    C

    axial piston type

    D

    volute type


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    The steering oar in a lifeboat is usually referred to as the（）.
    A

    bumpkin oar

    B

    stroke oar

    C

    sweep oar

    D

    becket oar


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Certain requirements must currently be met by a ship’s steering system.There must be （）independent means of steering, although where two identical power units are provided, an auxiliary unit is not required.
    A

    one

    B

    two

    C

    three

    D

    four


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Dual electro-hydraulic steering units usually operate （）.
    A

    with both pumps on line at the same time

    B

    with one pump on standby

    C

    with the follow-up gear disconnected

    D

    only when the rudder is moved amidships


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    The follow-up gear on an electro-hydraulic steering gear（）
    A

    relieves excessive fluid pressure

    B

    takes the pump off stroke when the desired rudder angle is attained

    C

    synchronizes wheel position with the rudder position

    D

    returns the rudder to midposition when the wheel is released


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）
    A

    The follow-up gear

    B

    The rudder angle indicator

    C

    The synchronous electric transmitter

    D

    A rudder angle limit switch


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    In an emergency，the electro-hydraulic steering units can be directly controlled by the（）.
    A

    trick wheel

    B

    rapson slide

    C

    follow-up gear

    D

    receiver unit


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    When there is no movement of the rams on an electro-hydraulic steering gear, the tilting box of the running pump is （）.
    A

    set for maximum torque

    B

    on the purge and vent stroke

    C

    in the neutral position

    D

    rotating backwards


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    To equalize the power factor of two alternators operating in parallel, the （）
    A

    field excitation of both units is adjusted

    B

    governors of both units are adjusted

    C

    phase sequence is altered

    D

    kilowatt load is evenly divided


    正确答案： D
    解析： 暂无解析

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