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单选题
If keep the fuel injection of main engine unchanged when ship is fouled, that will causeⅠ.The speed of main engine to be reduced Ⅱ.Ship speed to be reduced Ⅲ.The resistance torque of propeller to be increased Ⅳ.Trim at stern to increase（）
A
Ⅰ + Ⅱ
B
Ⅰ ~ Ⅲ
C
Ⅰ ~ Ⅳ
D
Ⅰ + Ⅱ + Ⅳ
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更多 “单选题If keep the fuel injection of main engine unchanged when ship is fouled, that will causeⅠ.The speed of main engine to be reduced Ⅱ.Ship speed to be reduced Ⅲ.The resistance torque of propeller to be increased Ⅳ.Trim at stern to increase（）A Ⅰ + ⅡB Ⅰ ~ ⅢC Ⅰ ~ ⅣD Ⅰ + Ⅱ + Ⅳ” 相关考题
考题
Re-circulating the fuel when the engine is stopped can______.①keep the fuel at the correct viscosity ②cool the injectorA.①B.②C.①②D.neither ① nor ②
考题
单选题The main purpose of changing main engine to electronic controlled is not to（）A
control fuel injection time more preciselyB
control fuel injection rate more preciselyC
meet the environmental requirementsD
meet high engine speed requirements
考题
单选题When a ship is entering to shallow water, ship resistance will be increased and the speed of main engine reduced.Due to the function of the governor, the main engine will（）A
reduce fuel feedingB
increase fuel feedingC
keep original fuel feedingD
be overspeed
考题
单选题When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）A
quantity of fuel injected is decreasedB
quantity of fuel injected will always be increasedC
start of injection is advancedD
duration of injection will always be greater
考题
单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）A
corrosion and grooving of exhaust valvesB
corrosion and gumming of the fuel injection pumpC
salt deposits in the exhaust manifoldD
slag deposits in the fuel injection equipment
考题
单选题Problems with the diesel engine fuel injection pump are usually caused by（）A
improper adjustmentB
contaminated fuelC
kinked fuel linesD
excessive engine vibration
考题
单选题While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should （）A
reduce the fuel feeding of main engine of inner propellerB
reduce the fuel feeding of main engine of outer propellerC
firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propellerD
reduce fuel feeding of two engines at the same time
考题
单选题Fuels of different qualities may require advancing or retarding the injection timing, in addition to which if the injection timing is advanced when the engine is running at loads below the （）, then a saving in fuel can be achieved.A
BHPB
MCRC
IHPD
MEP
考题
单选题If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?（）A
Increase the cooling water flow to the engineB
Secure or reduce fuel to that cylinderC
Screw down on the pressure adjusting spring to decrease to decrease popping pressureD
Readjust the injection timing
考题
单选题The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.A
caused by retarded injection timingB
caused by a mechanical defect in one cylinderC
caused by high fuel injection pressuresD
normal for these conditions
考题
单选题When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine （）A
to work as overload characteristicB
overspeedC
over mechanical load onlyD
over thermal load only
考题
单选题When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）A
Quantity of fuel injected tends to be decreasedB
Quantity of fuel injected will always be increasedC
Start of injection tends to be advancedD
Duration of injection will always greater
考题
单选题A full-flow 50μm filter is installed ,（） so the injection system components on the main engine are safeguarded.A
as close to the main engine as possibleB
as close to the main pump as possibleC
just before the fuel valveD
just before the booster pump
考题
单选题When the vessel on the full speed ahead, if full astern immediately （） the main engine start astern and fuel injection.A
after the thrust power is zeroB
after the torsion is zeroC
surpass the critical point on the water turbo phaseD
after the speed is zero
考题
单选题Turbulence is created in the cylinders of a diesel engine to （）A
obtain injection lagB
help mix fuel and airC
increase combustion pressureD
utilize higher injection pressures
考题
单选题Whether a ship is sailing before the wind or sailing in the rough sea, we must reduce the fuel injection of the main engine.For the former one, it aims to prevent the main engine being（）, while for the later one, it aims to prevent the main engine being（）.A
overspeed；overloadB
overload；overspeedC
over torque；overspeedD
low mechanical efficiency；overload
考题
单选题Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）A
The amount of fuel injected will be increasedB
The start of injection will be retardedC
The nozzle will permit fuel to dribbleD
The spray pattern will be distorted
考题
单选题The major cause of fuel pump and injection system problems is （）A
improper adjustmentsB
contaminated fuelC
kinked fuel linesD
excessive engine vibration
考题
单选题Significant retardation of a diesel engine fuel injection timing will result in （）A
smoother engine operationB
advanced fuel ignitionC
increased fuel economyD
reduced engine power
考题
单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.A
excessive fuel nozzle holder coolingB
sediment in the fuel supplyC
distortion of the fuel spray patternD
improper atomization of the fuel
考题
单选题While sailing under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is （）A
power of main engineB
turbine rotation speedC
speed of main engineD
exhaust temperature
考题
单选题When a fuel injection nozzle overheats, which of the problems listed can be expected?（）A
The fuel metering will varyB
The fuel will explodeC
The cylinder head will crackD
The engine will stop
考题
单选题When a ship is entering to narrow waterway and the fuel feeding of the main engine is keeping unchanged, which of the following is the wrong conclusion?（）A
the power of main engine will be reducedB
exhaust temperature will be increasedC
the speed of the ship will be reducedD
the propulsion characteristic of propeller will keep unchanged
考题
单选题When restarting a heavy fuel diesel engine that has been stopped for some time, the engine should（）A
increase the starting air pressureB
use a higher than normal cranking speedC
increase the fuel injection pressureD
use a fuel having a lower ignition temperature
考题
单选题When ship navigating in rough sea, the correct operation is （）A
navigating with a low diesel engine speedB
navigating with a stable diesel engine speedC
increasing the efficiency of propellerD
increasing fuel injection
考题
单选题Air in the fuel lines to the fuel injection nozzles of a diesel engine will cause the engine to （）A
burn excessive amounts of lube oilB
overheat without smokingC
operate with reduce power or stopD
run away without load
考题
单选题The fuel injection system is very important, so any trouble of it will （） the operation of the main engine.A
be affectedB
affectC
be effectedD
effect
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