What is an advantage of diesel over steam turbine propulsion ________．A.Less fuel consumption per SHPB.Diesel fuel costs less than bunker C or its equivalentC.Less routine maintenance requiredD.Less weight per SHP

题目

What is an advantage of diesel over steam turbine propulsion ________．

A.Less fuel consumption per SHP

B.Diesel fuel costs less than bunker C or its equivalent

C.Less routine maintenance required

D.Less weight per SHP

相似考题

1.The main propulsion diesel continues running after you try to shut down. You should now attempt to .A.stop the fuel oil booster pumpB.engage the jacking gearC.secure the lube oil pumpD.shut off the fuel at the settling tank

2.In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the _____.A.governor droopB.speeder spring tensionC.fuel rack lagD.load on the engine

3.The separation of impurities and water from ______is essential for good combustion of diesel engines.A.lube oilB.fuel oilC.turbine oilD.grease

4.Crankcase explosions in propulsion diesel engines result from ____.A.the splashing of lubrication oil by the crankshaftB.the dilution of crankcase oil with particles of combustionC.broken fuel lines spraying oil on the crankcaseD.the ignition of unburned fuel and air in the crankcase

更多“What is an advantage of diesel over steam turbine propulsion ________.A.Less fuel consumpt ”相关问题

  • 第1题：

    What is an advantage of a gate valve over a butterfly valve ________．

    A.Less frequent maintenance

    B.Faster operation

    C.Cheaper

    D.More compact


    正确答案：A

  • 第2题：

    单选题
    If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）
    A

    excessive compression pressure

    B

    air in the fuel lines

    C

    high fuel pressure

    D

    excessive load


    正确答案： D
    解析： 暂无解析

  • 第3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4题：

    单选题
    If a tow-stroke/diesel engine is over-speeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?（）
    A

    Move the fuel control mechanism to the no fuel position

    B

    Block the fuel supply by closing the master fuel valve

    C

    Shut off the fuel supply and block the flow of intake air

    D

    Relieve all pressure in the fuel system


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
    A

    increasing the quantity of starting air

    B

    increasing the lube oil pressure

    C

    heating the engine fuel supply

    D

    heating the engine coolant


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in （）.
    A

    decreased fuel consumption per brake horsepower

    B

    more complete cylinder scavenging

    C

    extended valve life

    D

    carbon formation on combustion chamber surfaces


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    What is an advantage of diesel over steam turbine propulsion? （）
    A

    Less fuel consumption per SHP

    B

    Diesel fuel costs less than bunker C or its equivalent

    C

    Less routine maintenance required

    D

    Less weight per SHP


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
    A

    double bottom fuel oil tank temperature

    B

    heater supply steam flow

    C

    pressure of the fuel supplied to the burners

    D

    attemperator steam flow in the heater discharge circuit


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or （）
    A

    excessive fuel pressure

    B

    high lube oil viscosity

    C

    inadequate fuel injection

    D

    excessive starting air pressure


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）
    A

    low TBN value

    B

    high alkaline reserve

    C

    low flash point

    D

    high pour point


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）
    A

    The expansion tank should be topped off

    B

    The thermostatic water regulating valves should be manually opened

    C

    The fuel filters should be changed

    D

    The engine should be turned over slowly with the indicator cocks open


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）
    A

    The diesel oil must never be allowed to mix with the heavy fuel

    B

    The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve

    C

    The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve

    D

    The heating steam must be secured before the diesel oil passes through the three-way valve


    正确答案： D
    解析： 暂无解析

  • 第13题：

    单选题
    One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.
    A

    the extra weight required for the diesel reduction gearing

    B

    a minimum speed for the engines that limits the minimum speed of the vessel

    C

    the higher fuel consumption per SHP

    D

    the low efficiency of the system when a controllable pitch propeller is used


    正确答案： C
    解析： 暂无解析

  • 第14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15题：

    单选题
    What is the best way of stopping an over-speeding diesel engine?（）
    A

    Disconnect the battery cables from the starting motor

    B

    Drain the hydraulic fluid from the governor sump

    C

    Block the flow of cooling air to the radiator

    D

    Secure the fuel supply and block the air intake


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    The diesel engine consumes considerably less fuel than the steam engine for equal output, （） enables a motor-ship to load more cargo.
    A

    why

    B

    which

    C

    in which

    D

    on which


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）
    A

    Plugged injector nozzles

    B

    Excessive fuel injection

    C

    Very late injection timing

    D

    Incorrect crankshaft clearance


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    What is an advantage of a steam turbine over a diesel for the main propulsion?（）
    A

    Faster response from ahead to astern

    B

    Less fuel consumption

    C

    Cheaper initial installation cost

    D

    Less weight per unit of horsepower


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
    A

    White

    B

    Black

    C

    Blue

    D

    Clear


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Crankcase explosions in propulsion diesel result from（）
    A

    the splashing of lubrication oil by the crankshaft

    B

    the dilution of crankcase oil with particles of combustion

    C

    broken fuel lines spraying oil on the crankcase

    D

    the ignition of unburned fuel and air in the crankcase


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）
    A

    test the starting system

    B

    remove condensation from the cylinders

    C

    check the compression

    D

    check for proper lube oil pressure


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
    A

    Spark plug

    B

    Heat of compression

    C

    Carburetor

    D

    Glow plug


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    The main propulsion diesel continues running after you try to shut downYoushould now attempt to（）
    A

    stop the combustion air supply

    B

    engage the jacking gear

    C

    secure the lube oil pump

    D

    shut off the fuel at the day tank


    正确答案： C
    解析： 暂无解析

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