A virtual rise in the center of gravity may be caused by ______.A.filling a partially filled tankB.using an on board crane to lift a freely swinging heavy objectC.emptying a partially filled tankD.transferring ballast from the forepeak to the after peak

题目

A virtual rise in the center of gravity may be caused by ______.

A.filling a partially filled tank

B.using an on board crane to lift a freely swinging heavy object

C.emptying a partially filled tank

D.transferring ballast from the forepeak to the after peak

相似考题

1.The righting moment can be determined by multiplying the displacement by the ______．A.vertical center of gravity（KG）B.longitudinal center of gravity（LCG）C.righting arm（GZ）D.center of gravity（CG）

2.A vessel aground may have negative GM since the ______.A.decrease in KM is equal to the loss of draftB.virtual rise of G is directly proportional to the remaining draftC.lost buoyancy method is used to calculate KM, and KB is reducedD.displacement lost acts at the point where the ship is aground

3.A vessel may acquire a list if the center of gravity is ______. ① Off the centerline. ② Too high in the vessel.A.① onlyB.② onlyC.Either ① or ②D.Neither ① nor ②

4.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

更多“A virtual rise in the center of gravity may be caused by ______.A.filling a partially fill ”相关问题

  • 第1题：

    在一个相对布局中怎样使一个控件居中（）

    • A、android：gravity="center"
    • B、android：layout_gravity="center"
    • C、android：layout_centerInParent="true"
    • D、android：scaleType="cente"

    正确答案:C

  • 第2题：

    单选题
    What is the definition of transverse metacenter?（）
    A

    The distance between the actual center of gravity and the maximum center of gravity that will still allow a positive stability

    B

    The point to which G may rise and still permit the vessel to possess positive stability

    C

    The sum of the center of buoyancy and the center of gravity

    D

    The transverse shift of the center of buoyancy as a vessel rolls


    正确答案： A
    解析： 暂无解析

  • 第3题：

    单选题
    The center of flotation of a vessel is（）.
    A

    the center of volume of the immersed portion of the vessel

    B

    the center of gravity of the water plane

    C

    that point at which all the vertical downward forces of weight are considered to be concentrated

    D

    that point at which all the vertical upward forces of buoyancy are considered to be concentrated


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    A partially full tank causes a virtual rise in the height of the（）.
    A

    metacenter

    B

    center of buoyancy

    C

    center of flotation

    D

    center of gravity


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    The existence of liquids in partially full tanks or compartments of a ship causes a virtual rise in the height of the（）.
    A

    metacenter

    B

    center of buoyancy

    C

    center of flotation

    D

    center of gravity


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    A crankshaft whose center of gravity coincides with its center line is said to be （）.
    A

    dynamically balanced

    B

    statically balanced

    C

    counter balanced

    D

    resonantly balanced


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    A crankshaft whose center of gravity coincides with its center line is said to be（） Ⅰ.statically balanced Ⅱ.dynamically balanced
    A

    Ⅰ only

    B

    Ⅱ only

    C

    both Ⅰ and Ⅱ

    D

    neither Ⅰ nor Ⅱ


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    When the（）is large, the ship is stiff; and when it is small, she is tender.
    A

    GM

    B

    free surface

    C

    longitudinal center of gravity

    D

    transverse center of gravity


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    A virtual rise in the center of gravity may be caused by（）.
    A

    filling a partially filled tank

    B

    using an on board crane to lift a freely swinging heavy object

    C

    emptying a partially filled tank

    D

    transferring ballast from the forepeak to the after peak


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    The distance traveled by the center of gravity perpendicular to the original course is（）.
    A

    transfer

    B

    advance

    C

    kick

    D

    tactical diameter


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    The point to which your vessel’s center of gravity (G) may rise and still permit the vessel to have positive stability is called the（）.
    A

    metacentric point

    B

    metacenter

    C

    metacentric radius

    D

    tipping center


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    A flooded leg on a lift boat would adversely affect the vessel’s stability underway by（）.
    A

    increasing the righting moment

    B

    decreasing the vessel's displacement

    C

    increasing the reserve buoyancy

    D

    shifting the CG (center of gravity) off center


    正确答案： D
    解析： 暂无解析

  • 第13题：

    单选题
    The difference between the height of the metacenter and the height of the center of gravity is known as the（）.
    A

    metacentric height

    B

    height of the righting arm

    C

    fore and aft perpendicular

    D

    height of the center of buoyancy


    正确答案： D
    解析： 暂无解析

  • 第14题：

    单选题
    In order to determine the trimming arm for your vessel at any particular draft，which of the following would you compare?（）.
    A

    Longitudinal center of buoyancy and longitudinal center of gravity

    B

    Longitudinal center of floatation and longitudinal center of gravity

    C

    Longitudinal center of floatation and longitudinal center of buoyancy

    D

    Longitudinal tipping center and longitudinal center of gravity


    正确答案： A
    解析： 暂无解析

  • 第15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16题：

    单选题
    A flooded lifeboat on board a vessel would adversely affect the vessel’s stabbility by（）.
    A

    increasing the righting moment

    B

    decreasing the vessel's displacement

    C

    increasing the reserve buoyancy

    D

    shifting the CG(center of gravity) off center


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    The center of buoyancy is located at the（）.
    A

    geometric center of the waterplane area

    B

    intersection of the vertical centerline and line of action of the buoyant force

    C

    center of gravity of the vessel corrected for free surface effects

    D

    geometric center of the displaced volume


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    The center of the underwater volume of a floating vessel is the（）.
    A

    center of buoyancy

    B

    center of flotation

    C

    uncorrected height of the center of gravity of the vessel

    D

    center of gravity of the vessel corrected for free surface effects


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.
    A

    The metacenter does not remain in the same position for large angles of inclination

    B

    The center of gravity shifts due to inclination

    C

    The center of gravity shifts above the metacenter as the vessel is inclined

    D

    The mean draft will change as the vessel is inclined


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    Addition of weight above the center of gravity of a vessel will ALWAYS（）.
    A

    reduce initial stability

    B

    increase righting moments

    C

    increase GM

    D

    All of the above


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Stability is determined principally by the location of the center of gravity and the（）.
    A

    aft perpendicular

    B

    center of buoyancy

    C

    keel

    D

    center of flotation


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    The important initial stability parameter，GM，is the（）.
    A

    metacentric height

    B

    height of the metacenter above the keel

    C

    height of the center of buoyancy above the keel

    D

    height of the center of gravity above the keel


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    A virtual rise in the center of gravitty may be caused by（）.
    A

    filling a partially tank

    B

    using an on board crane to life a freely swinging heavy object

    C

    emptying a partially filled tank

    D

    transferring ballast from the forepeak to the after peak


    正确答案： B
    解析： 暂无解析

相关内容