A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is ______.A.positiveB.negativeC.zeroD.vertical

题目

A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is ______.

A.positive

B.negative

C.zero

D.vertical

相似考题

1.In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to ().A.heel until the angle of loll is reachedB.list until the center of buoyancy is aligned vertically with the center of gravityC.trim to the side opposite TCG until all moments are equalD.decrease draft at the center of flotation

2.With no environmental forces acting on the vessel，the center of gravity of an inclined vessel is vertically aligned with the ______．A.longitudinal centerlineB.center of flotationC.original vertical centerlineD.metacenter

3.For a floating vessel, the center of flotation is the point in the waterplane ______.A.about which the vessel lists and trimsB.which coincides with the center of buoyancyC.which, in the absence of external forces, is always vertically aligned with the center of gravityD.which is shown in the hydrostatic tables as VCB

4.A vessel is "listed" when it is ______.A.down by the headB.down by the sternC.inclined due to off-center weightD.inclined due to wind

更多“A vessel is inclined at an angle of loll. In the absence of external forces,the righting a ”相关问题

  • 第1题：

    For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the ______.

    A.righting moment

    B.longitudinal moment

    C.transverse moment

    D.vertical moment


    正确答案：A
    对于风致倾斜的船舶，浮力乘以浮力重心到重力重心的水平距离得到复原力矩。

  • 第2题：

    In small angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the ______.

    A.center of gravity

    B.center of flotation

    C.metacenter

    D.metacentric height


    正确答案：C
    在小倾角稳性时，当有外力存在，浮力应通过浮心和稳心垂直向上。

  • 第3题：

    单选题
    A ship is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
    A

    positive

    B

    negative

    C

    zero

    D

    vertical


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    For a vessel inclined by the wind，multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the（）.
    A

    righting moment

    B

    vertical moment

    C

    longitudinal moment

    D

    transverse moment


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    The center of flotation of a vessel is the point in the waterplane（）.
    A

    about which the vessel lists and trims

    B

    which coincides with the center of buoyancy

    C

    which，in the absence of external forces，is always vertically aligned with the center of gravity

    D

    which is shown in the hydrostatic tables as VCB


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    The effect known as bank cushion acts in which of the following ways on a single-screw vessel proceeding along a narrow channel? （）
    A

    It forces the bow away from the bank

    B

    It forces the stern away from the bank

    C

    It forces the entire vessel away from the bank

    D

    It heels the vessel toward the bank


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
    A

    positive

    B

    negative

    C

    zero

    D

    vertical


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    In the presence of external forces，the center of buoyancy of an inclined vessel is vertically aligned with the（）.
    A

    center of gravity

    B

    metacenter

    C

    center of flotation

    D

    keel


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    In the absence of external forces, the center of gravity of a floating vessel is located directly above the（）.
    A

    metacenter

    B

    amidships

    C

    center of floatation

    D

    geometric center of the displaced volume


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    An inclined semisubmersible with a very short rolling period about a constant angle of list is likely to have（）.
    A

    an off-center TCG

    B

    an LCG greater than level vessel LCB

    C

    a negative GM

    D

    excessive free surfaces


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    For a floating vessel，the center of flotation is the point in the waterplane（）.
    A

    about which the vessel lists and trims

    B

    which coincides with the center of buoyancy

    C

    which，in the absence of external forces，is always vertically aligned with the center of gravity

    D

    which is shown in the hydrostatic tables as VCB


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.
    A

    increase the righting moment

    B

    cause an increase in the righting arm

    C

    bring the vessel to an upright equilibrium position

    D

    cause the vessel to flop to a greater angle


    正确答案： C
    解析： 暂无解析

  • 第13题：

    If the result of loading a vessel is an increase in the height of the center of gravity, there will always be an increase in the ______.

    A.metacentric height

    B.righting arm

    C.righting moment

    D.vertical moments


    正确答案：D
    假如装船的结果使船舶重心升高，那将总是使垂向力矩减少。

  • 第14题：

    In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the ______.

    A.center of gravity

    B.metacenter

    C.center of flotation

    D.Keel


    正确答案：B
    当存在外力时，倾斜船舶的浮心垂直对齐稳心。（浮心和稳心在同一垂面上）

  • 第15题：

    单选题
    At an angle of loll，the righting arm (GZ) is（）.
    A

    maximum

    B

    negative

    C

    positive，but reflexive

    D

    zero


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    In the absence of external forces，the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.
    A

    center of gravity

    B

    amidships station

    C

    center of flotation

    D

    geometric center of the waterplane area


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    When a vessel is inclined by an external force，the（）.
    A

    shape of the vessel's underwater hull remains the same

    B

    vessel's center of gravity shifts to the center of the vessel's underwater hull

    C

    vessel's center of buoyancy shifts to the center of the vessel's underwater hull

    D

    vessel's mean draft increases


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    The angle of maximum righting arm corresponds approximatelyto the angle of（）.
    A

    deck edge immersion

    B

    the load line

    C

    downflooding

    D

    loll


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.
    A

    center of gravity

    B

    center of flotation

    C

    metacenter

    D

    metacentric height


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    In snall angle stability, when external forces exist , the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.
    A

    center of gravity

    B

    center of flotation

    C

    metacenter

    D

    metacentric height


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    The tendency of a vessel to return to its original trim after being inclined by an external force is（）.
    A

    equilibrium

    B

    buoyancy

    C

    transverse stability

    D

    longitudinal stability


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    In the absence of external forces，adding weight on one side of a floating vessel causes the vessel to（）.
    A

    heel until the angle of loll is reached

    B

    list until the center of buoyancy is aligned vertically with the center of gravity

    C

    trim to the side opposite TCG until all moments are equal

    D

    decrease draft at the center of flotation


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    For a floating vessel,the center of the floating is the point in the waterpiane.（）.
    A

    aboat which the vessel lists and trims

    B

    which coincides with the center of buoyancy

    C

    which, in the absence of external forces, is always vertically aligned with the center of gravity

    D

    which is shown in the hydrostatic tables as VCB


    正确答案： D
    解析： 暂无解析

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