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An over-speed safety device is usually fitted to a generator engine for ___ in the event of over-speed.A.stabilizing the ship speedB.increasing the fuel pump settingC.braking the crankshaftD.cutting power off the engine

题目

An over-speed safety device is usually fitted to a generator engine for ___ in the event of over-speed.

A.stabilizing the ship speed

B.increasing the fuel pump setting

C.braking the crankshaft

D.cutting power off the engine

相似考题

1.Which of the units listed is used to combust waste in the engine room?A.BoilerB.IncineratorC.Generator

2.Safety shackles are fitted with ______．A.a threaded boltB.a round pin，with a cotter pinC.a threaded bolt，locknuts，and cotter pinsD.round pins and locknuts

3.As soon as the ship gets alongside the wharf, you should lower the gangway and put a （）below it.A、safety netB、safety beltC、safety lampD、safety device

4.For most diesel propulsion and generator engines, the over-speed trip device will stop the engine byA.moving the governor control to stopB.shutting off the lubricating oil supplyC.tripping the governor emergency stop leverD.shutting off the fuel supply

更多“An over－speed safety device is usually fitted to a generator engine for ___ in the event o ”相关问题

  • 第1题：

    单选题
    In ships where the engine room is designed as UMS, temperature sensors are fitted at critical points within the scavenge spacesActivation would cause automatic （）of the engine.
    A

    stop

    B

    start

    C

    speed up

    D

    slow down


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    Problems with the diesel engine fuel injection pump are usually caused by（）
    A

    improper adjustment

    B

    contaminated fuel

    C

    kinked fuel lines

    D

    excessive engine vibration


    正确答案： C
    解析： 暂无解析

  • 第3题：

    单选题
    An over-speed trip serves to （）
    A

    stop the engine by cutting off the cooling water supply

    B

    stop the engine by closing the air intake

    C

    slow the engine but not stop it

    D

    slow the engine to half of normal load


    正确答案： A
    解析： 暂无解析

  • 第4题：

    单选题
    For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by （）
    A

    moving the governor control to stop

    B

    shutting off the lubricating oil supply

    C

    tripping the governor emergency stop lever

    D

    shutting off the fuel supply


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    The diesel engine exhaust gas bypass, as fitted with some waste heat boilers, is installed to （）
    A

    prevent engine back pressure at heavy loads

    B

    increase total engine efficiency at low loads

    C

    prevent boiler corrosion at low engine loads

    D

    improve engine fuel consumption at any load


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    Safety shackles are fitted with（）.
    A

    a threaded bolt

    B

    a round pin，with a cotter pin

    C

    a threaded bolt，locknuts，and cotter pins

    D

    round pins and locknuts


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    An overspeed safety device is usually fitted to a generator engine for （） in the event of overspeed.
    A

    cutting power off the engine

    B

    increasing the fuel pump setting

    C

    braking the crankshaft

    D

    stabilizing the ship speed


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
    A

    increasing the volume of intake air

    B

    shutting off the fuel supply

    C

    increasing the engine back pressure

    D

    over-speeding the engine


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following statements is correct concerning diesel engine cooling water systems?（）
    A

    Each engine must have its own engine driven cooling water pump capable of providing cooling for all ranges of operation

    B

    propulsion engines with bores exceeding 200 mm are to be fitted with a means to display the cooling water temperature of each cylinder

    C

    At least two independent sea suctions are to be provided for supplying water to the engine jackets or to the heat exchangers

    D

    Suitable strain are to be fitted between the circulating pumps and heat exchangers when sea water is used for direct cooling


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    The air reservoirs must have （） fitted to prevent rupture in the event of fire.
    A

    high pressure alarm

    B

    fire alarm

    C

    extinguishers

    D

    fusible plugs


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）
    A

    maintain alignment when the ship’s hull is working in heavy seas

    B

    ensure engine vibrations correspond to the natural frequency of the hull

    C

    permit the engine to expand away from the driven equipment as the engine heats up and expands

    D

    maintain engine thrust bearing clearances


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）
    A

    an engine-driven；as well

    B

    an engine-driven；has an independent pump

    C

    an independent；as well

    D

    an independent；has an engine-driven pump


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?（）
    A

    Manually trip the over-speed device

    B

    Interrupt the fuel flow to the engine

    C

    Disengage the safety interlock

    D

    Slide the camshaft to the neutral position


    正确答案： B
    解析： 暂无解析

  • 第14题：

    单选题
    The over-speed trip device installed in some diesel engines is automatically actuated by（）
    A

    spring force

    B

    hydraulic pressure

    C

    centrifugal force

    D

    mechanical linkage


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    An over-speed trip stops a diesel engine when the engine （）
    A

    runs out of fuel

    B

    has low lubricating oil pressure

    C

    exceeds a set maximum speed

    D

    has high cooling water temperature


    正确答案： B
    解析： 暂无解析

  • 第16题：

    单选题
    The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
    A

    water supply

    B

    fuel oil supply

    C

    lube oil supply

    D

    exhaust damper


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    The power factor at which a paralleled AC generator operates is usually adjusted by the （）.
    A

    connected load

    B

    prime mover speed

    C

    field excitation

    D

    generators rated voltage


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    An emergency diesel generator should automatically shut down in the event of （）
    A

    dangerous over-speeding

    B

    a loss of lube oil pressure

    C

    activation of the fixed CO2 system for the emergency generator space

    D

    all of the above


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    The governor of a generator engine is to （）.
    A

    make the engine stop

    B

    regulate the timing of camshafts

    C

    make the rpm stabilize at any required value

    D

    make the engine run at nearly constant speed


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with （）.
    A

    lantern rings

    B

    bearings

    C

    easing volutes

    D

    wearing rings


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    During an engine room watch if immediate action is necessary to ensure safety of the ship its machinery and crew （）
    A

    the chief engineer must be informed at first

    B

    the captain must be informed at first

    C

    it must be taken by the duty engineer

    D

    the generator engine must be stopped


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    Since the burning or combustion takes place within the engine itself, the engine is known as （）.
    A

    a fire -tube boiler

    B

    an internal combustion engine

    C

    an external combustion engine

    D

    an internal combustion generator


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following statements is correct for the design and installation of diesel engine cooling water systems?（）
    A

    An alarm device with audible and visible signals is required for all cooling water systems

    B

    Propulsion engines with bores over 200 mm are to be fitted with cooling water jackets

    C

    Each totally enclosed cooling system shall be provided with a suitable head tank

    D

    Drain cocks are to be provided at the lowest points of all cylinder water jackets


    正确答案： D
    解析： 暂无解析

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