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单选题
White smoke exhausting from an operating diesel engine may indicate （）
A
a cracked liner
B
burning lube oil
C
an overloaded engine
D
insufficient combustion air
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单选题White smoke exhausting from an operating diesel engine may indicate （）.A
a cracked linerB
burning lube oilC
an overloaded engineD
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单选题White smoke exhausting from a diesel engine can be caused by a （）A
high combustion temperatureB
high compression pressureC
cracked cylinder linerD
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单选题White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）A
the engine is overloadedB
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there is too much lube oil in the cylindersD
the turbocharger is fouled
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单选题Excessive vibration in an operating diesel generator may be caused by （）A
electrical overloadB
surging at governed RPMC
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单选题If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）A
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单选题White smoke exhausting from a diesel engine can result from （）A
high exhaust temperatureB
high lube oil temperatureC
low turbo-charger speedD
low cooling water temperature
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单选题A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）A
feel the high pressure fuel lineB
check the cylinder exhausts for white smoke frequentlyC
check the cylinder exhaust temperatureD
isolate each cylinder and inspect the injector
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单选题Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）A
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单选题Black smoke exhausting from an operating diesel engine can be caused by （）A
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burning fuel with a high carbon contentC
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单选题Low compression of diesel engine may result from （）A
a worn cylinderB
broken piston ringsC
any of A and BD
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low sulfur content in the fuelB
a loose injector inlet connectionC
late fuel injectionD
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engine overloadB
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单选题Lube oil in the fresh water cooling system of a diesel engine may result from a （）A
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单选题What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）A
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单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）A
a cracked cylinder linerB
clogged intake portsC
broken piston ringsD
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单选题The purpose of compressing the air within the cylinder of a diesel engine is to （）A
produce the heat for ignitionB
decrease injection lagC
increase ignition delayD
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单选题If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）A
check the air filter for obstructionB
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单选题An indication of an overloaded main propulsion diesel engine is （）A
white smoke in the exhaustB
high exhaust gas pyrometer readingsC
sparks in the exhaustD
blue smoke in the exhaust
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