單項(xiàng)選擇題A diesel engine could fail to start because of ()

A.incorrect injection timing
B.low exhaust back pressure
C.floating exhaust valves
D.excessive cranking speed


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1.單項(xiàng)選擇題Excessive vibration in an operating diesel generator may be caused by ()

A.electrical overload
B.surging at governed RPM
C.loose engine mounting bolts
D.coolant leaking into the cylinder

2.單項(xiàng)選擇題If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should()

A.check the air filter for obstruction
B.check for an exhaust leak
C.check the exhaust temperature
D.secure the engine

3.單項(xiàng)選擇題Clogged or partially obstructed exhaust ports on a diesel engine can cause()

A.over-speeding of the engine
B.failure of the engine to shut down
C.no effect of engine mounting bolts
D.high exhaust temperatures

4.單項(xiàng)選擇題A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of ()

A.low lube oil temperature
B.low starting air temperature
C.air bubbles in the fuel oil system
D.water in the starting air system

5.單項(xiàng)選擇題Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?()

A.Low cooling water outlet temperature
B.High lube oil pressure
C.Low lube oil temperature
D.Low starting air pressure