The cubic inch(or liter) displacement ...

单项选择题The cubic inch(or liter) displacement of a cylinder is determined by the diameter of the piston and the （）

A.length of the crankshaft
B.volume of the clearance space
C.weight of piston
D.length of the stroke

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1.单项选择题(Piston area)X(Piston stroke)K(numbers of the cylinders)=engine（）

A.brake horsepower
B.displacement
C.cylinder volume
D.cylinder clearance

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2.单项选择题Which of the listed conditions will affective pressure the most in the cylinder of a diesel engine?（）

A.TBN of the lubricating oil
B.Temperature of the lube oil
C.Completeness in the mixing of the fuel and air
D.Temperature of the cooling (sea) water

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3.单项选择题When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）

A.starting air pressure
B.scavenge air pressure
C.over-speed trip
D.banjo oiler line

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4.单项选择题When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）

A.starting air pressure
B.scavenge air pressure
C.over-speed trip
D.banjo oiler line

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5.单项选择题The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）

A.engine speed
B.kilowatt load
C.fuel injection pressure
D.air intake manifold temperature

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6.单项选择题The operating speed of a turbocharger is directly dependent upon（）

A.engine speed
B.engine load
C.intake manifold pressure
D.atmospheric pressure

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7.单项选择题A four-stroke/cycle, 1000horsepower diesel engine fails to start at normal cranking speed with normal fuel pressure and ambient temperatureThe reason for the failure could be（）

A.glazed liners or pistons
B.high lube oil pressure
C.excessive compression ratio
D.worn valve seats and valves

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8.单项选择题In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the （）

A.governor droop
B.speeder spring tension
C.fuel rack lag
D.load on the engine

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9.单项选择题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）

A.a cracked cylinder liner
B.clogged intake ports
C.broken piston rings
D.a faulty head gasket

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10.单项选择题When restarting a heavy fuel diesel engine that has been stopped for some time, the engine should（）

A.increase the starting air pressure
B.use a higher than normal cranking speed
C.increase the fuel injection pressure
D.use a fuel having a lower ignition temperature

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