单选题Load control on a diesel engine is accomplished by （）.A regulating the speed of the turbochargerB rotating the fuel injector pump plungerC regulating the speed of the fuel oil transfer pumpD changing engine timing

题目
单选题
Load control on a diesel engine is accomplished by （）.
A

regulating the speed of the turbocharger

B

rotating the fuel injector pump plunger

C

regulating the speed of the fuel oil transfer pump

D

changing engine timing

相似考题

1.An increase in load on a diesel engine results in _____ of speed of the crankshaft.A.a reductionB.an increaseC.an outingD.a downwards

2.单选题One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）A reduce lube oil temperatureB raise exhaust temperature reduceC excessive heating of engine roomD reduce load on cooling water pump

3.单选题A connecting rod in a four-stroke/cycle diesel engine is subject to（）A tension load twice each crankshaft revolutionB compression load during power and compression strokesC inertia load once every four crankshaft revolutionsD bending loads at bottom and top dead center

4.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

更多“Load control on a diesel engine is accomplished by （）.”相关问题

  • 第1题：

    单选题
    Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
    A

    wheelhouse control station

    B

    engine room control station

    C

    captains office

    D

    chief engineers office


    正确答案： B
    解析： 暂无解析

  • 第2题：

    单选题
    A diesel engine is supercharged in order to（）
    A

    lower the no-load RPMs

    B

    provide more air for combine with the fuel

    C

    increase the no-load RPMs

    D

    provide more fuel combine with the air


    正确答案： D
    解析： 暂无解析

  • 第3题：

    单选题
    Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
    A

    chromium plating piston rings

    B

    knurling the piston skirt

    C

    extended maximum power operation

    D

    applying load to a cold diesel engine


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    Diesel engine control can be obtained by the bridge （）.
    A

    at any time

    B

    only after the engine room control station is switched to “bridge control”

    C

    whenever the secondary station is switched to bridge control

    D

    with the approval of the chief engineer only


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.
    A

    reduce the engine driven fuel pump outlet pressure

    B

    retard the fuel injector timing to reduce power

    C

    increase the fuel rack setting

    D

    reduce the load on the engine


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.
    A

    during the valve overlap period

    B

    with only the exhaust valve open

    C

    at a pressure below atmospheric

    D

    without cooling the cylinders or pistons


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    A naturally aspirated diesel engine at full throttle will have an intake manifold pressure （）
    A

    slightly less than atmospheric pressure

    B

    approximately equal to exhaust manifold pressure at all times

    C

    that is widely fluctuating constantly

    D

    decreasing as engine load increases


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）
    A

    exhaust

    B

    air box pressure

    C

    brake main effective pressure

    D

    all of the above


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）
    A

    decrease only

    B

    increase only

    C

    decrease slightly then returned to original speed

    D

    increase slightly then returned to original speed


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will（）
    A

    lag behind the increased fuel supplied to the engine

    B

    enter the engine along with the increase in the fuel

    C

    enter the engine before the increased fuel supply

    D

    leave the turbocharger as a negative pulse


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished（）
    A

    during the valve overlap period

    B

    with only the exhaust valve open

    C

    at a pressure below atmospheric

    D

    without cooling the cylinders or pistons


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    “This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density（）, drives the compressor directly（）
    A

    a modern diesel engine；a turbine wheel

    B

    a modem diesel engine；exhaust gases

    C

    a compressor；an exhaust gas turbocharger

    D

    a compressor；a turbine wheel


    正确答案： A
    解析： 暂无解析

  • 第13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14题：

    单选题
    A diesel engine emits blue exhaust smoke as a result of（）
    A

    cold intake air

    B

    excessive compression pressure

    C

    excessive cylinder lubrication

    D

    a light load


    正确答案： B
    解析： 暂无解析

  • 第15题：

    单选题
    When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average （）
    A

    air quantity aspirated

    B

    fuel injection pressure

    C

    combustion pressure on the power stroke

    D

    compression on the compression stroke


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    In a diesel engine, blow-by is generally the result of worn（）
    A

    valve guides

    B

    oil control rings

    C

    valve seats

    D

    compression rings


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    In a modern internal combustion diesel engine, the load carrying part of the engine is referred to as the（）
    A

    bedplate or base

    B

    sump or oil pan

    C

    cylinder block

    D

    frame


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    Main diesel engine control can be obtained by the bridge （）
    A

    at any time

    B

    only after the engine room control station is switched to ‘bridge control’

    C

    whenever the secondary station is switched to ‘bridge control’

    D

    whenever the engine side control station is switched to ‘bridge control’


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Maximum horsepower of a diesel engine is attained （）.
    A

    when the engine RPM is pulled down by overload

    B

    at rated engine RPM

    C

    at 95 % of rated engine RPM

    D

    at 95 % of a properly adjusted governor RPM with the engine under full load


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    An increase in load on a diesel engine results in （） of speed of the crankshaft.
    A

    a reduction

    B

    an increase

    C

    an outing

    D

    a downwards


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will （）
    A

    decrease until the engine speed increases

    B

    increase as the load increases

    C

    decrease as the load

    D

    increases remain unchanged


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine （）
    A

    speed will drop drastically with any increase in load

    B

    will stop due to zero fuel supply

    C

    will stall upon application of load

    D

    speed will remain fairly constant despite load changes


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    What monitoring device best indicates the load being carried by a diesel engine?（）
    A

    Lube oil pressure gauge

    B

    Jacket water temperature gauge

    C

    Tachometer

    D

    Exhaust pyrometer


    正确答案： D
    解析： 暂无解析

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