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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
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更多 “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 loadB will stop due to zero fuel supplyC will stall upon application of loadD speed will remain fairly constant despite load changes” 相关考题
考题
If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .A.have a larger than normal dead bandB.produce excessive speed response to a load changeC.respond slowly to any change in engine loadD.stabilize engine speed at the new governor setting
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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
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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
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One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the_______.A.governor sensitivityB.exhaust temperatureC.fuel injection pressureD.speed of the cam shaft
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Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger? .A.Reduce engine speed to idle before removing the filterB.Soak the dirty filter in kerosene onlyC.Blow out the air inlet with compressed airD.Cover the air inlet after removing the filter
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On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the______.A.accumulator spring compressionB.balance pistonC.compensating(补偿) needle valveD.proportional piston
考题
单选题If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will （）A
have a larger than normal dead bandB
produce excessive speed response to a load changeC
respond slowly to any change in engine loadD
stabilize engine speed at the new governor setting
考题
单选题The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to （）A
compensate for low oil levelB
increase governor promptnessC
prevent governor huntingD
limit engine load
考题
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 stopB
shutting off the lubricating oil supplyC
tripping the governor emergency stop leverD
shutting off the fuel supply
考题
单选题The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.A
an isochronous governorB
elastic engine mountsC
a vibration damperD
a cast iron bed plate with good flexible qualities
考题
单选题What is the best way of stopping an over-speeding diesel engine?（）A
Disconnect the battery cables from the starting motorB
Drain the hydraulic fluid from the governor sumpC
Block the flow of cooling air to the radiatorD
Secure the fuel supply and block the air intake
考题
单选题The size of the exhaust valve opening is （）A
most critical in a four-stroke cycle diesel engineB
most critical in a two-stroke/cycle diesel engineC
most critical in a four-stroke/cycle diesel engine if it is turbochargedD
of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine
考题
单选题To correct a hunting problem in a main propulsion diesel engine hydraulic governor, you should （）.A
increase the governor oil pressureB
adjust the speed droop settingC
adjust the speeder spring travelD
adjust the compensating needle valve
考题
单选题The governor of a generator engine is to （）.A
make the engine stopB
regulate the timing of camshaftsC
make the rpm stabilize at any required valueD
make the engine run at nearly constant speed
考题
单选题If a main propulsion diesel engine hunts excessively at idle speed, you should （）A
adjusts the idle speed controlB
drain and flushes the governor and replace the oilC
adjusts the compensating needle valve
考题
单选题Defective governor in a diesel engine may lead to （）.A
smoky exhaustB
starting failureC
ignition relayD
over speed
考题
单选题The load limitation of governor should be reduced when ship navigating at sea, the main reason is to（）A
prevent the diesel engine surgingB
prevent governor from being damaged because of swingC
reduce the probability of the crank shaft being torsional vibrated and resonatedD
prevent the main engine being overload or overspeed
考题
单选题Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.A
increaseB
decreaseC
fluctuateD
remain constant
考题
单选题On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）A
accumulator spring compressorB
balance pistonC
compensating needle valveD
proportional piston
考题
单选题Maximum horsepower of a diesel engine is attained （）.A
when the engine RPM is pulled down by overloadB
at rated engine RPMC
at 95 % of rated engine RPMD
at 95 % of a properly adjusted governor RPM with the engine under full load
考题
单选题Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?（）A
Reduce engine speed to idle before removing the filterB
Soak the dirty filter in kerosene onlyC
Blow out the air inlet with compressed airD
Cover the air inlet after removing the filter
考题
单选题A diesel generator has just been paralleled with an AC turbo-generator, but the load can not be properly divided.This could be caused by（）A
an incorrect diesel generator governor speed droop adjustmentB
a faulty reverse power relay within the main circuit breaker assemblyC
unsynchronized isochronous load distribution adjustmentsD
a different speed setting on each unit
考题
单选题A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）A
decrease onlyB
increase onlyC
decrease slightly then returned to original speedD
increase slightly then returned to original speed
考题
单选题Before being shut down, a diesel engine should idle a few minutes in orderto （）A
prevent governor surging at shutdownB
make sure the fuel nozzles are flushed cleanC
prevent pressure buildup in the fuel linesD
prevent damage from localized overheating
考题
单选题Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?（）A
speed droopB
compensationC
idle speed settingD
load limit control
考题
单选题A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an （）A
torque limiterB
over-speed tripC
over-speed governorD
load limit governor
考题
单选题The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）A
governor flyweight action on a pilot valve which controls fuel injectionB
governor flyweight motion acting on fuel controls through suitable linkageC
positioning a butterfly valve in the fuel delivery system positioningD
a servomotor piston attached to the fuel controls
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