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发布时间:2023-10-21 20:45:02

[单项选择]An increase in load on a diesel engine results in () of speed of the crankshaft.
A. a reduction
B. an increase
C. an outing
D. a downwards

更多"An increase in load on a diesel eng"的相关试题:

[单项选择]An increase in diesel engine crankcase pressure generally indicates excessive()
A. compression pressure
B. lube oil header pressure
C. scavenge air pressure
D. piston ring blow-by
[单项选择]A reduction in load on a diesel engine results in () of speed of the crankshaft.
A. a reduction
B. an increase
C. an outing
D. a downwards
[单项选择]Diesel engine fuel oil contamination often results in ()
A. governor malfunctions
B. fuel injection system malfunctions
C. high cylinder lube oil temperatures
D. low intake temperatures
[单项选择]Load control on a diesel engine is accomplished by ().
A. regulating the speed of the turbocharger
B. rotating the fuel injector pump plunger
C. regulating the speed of the fuel oil transfer pump
D. changing engine timing
[单项选择]When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average ()
A. air quantity aspirated
B. fuel injection pressure
C. combustion pressure on the power stroke
D. compression on the compression stroke
[单项选择]A diesel engine should not be operated at low loads for long periods of time because()
A. heavy carbon deposits will buildup on the valves and in the exhaust
B. fuel dilution is increased at low load
C. exhaust valves may be damaged
D. all of the above
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a ()
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should ().
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]The marine diesel engine is a type of diesel engine used on ships The () of its operation is not very difficult to understand.
A. principle
B. principal
C. cause
D. case
[单项选择]A diesel engine is similar to a gasoline engine except that the former has no ().
A. cross-head
B. cylinder
C. connecting rod
D. spark plug
[单项选择]Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are ().
A. operated manually once an hour
B. operated until the engine has started
C. placed into operation only at maximum load
D. adjustable to meet lubrication requirements
[单项选择]Diesel engine mufflers accomplish noise reduction by ()
A. reducing exhaust gas velocity
B. increasing the frequency of gas vibration
C. the use of long head pipes
D. the use of zinc electrodes
[单项选择]A diesel engine burns () a gasoline engine of the same capacity in the same period of time.
A. as much fuel as
B. less fuel than
C. less fuel as
D. more fuel than
[单项选择]Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be()
A. placed as near the crankpin axis as possible
B. removed each time the crankshaft is repositioned
C. left in place for all four readings
D. reset to zero for all four readings
[单项选择]The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the ()
A. method of supplying air
B. cooling system
C. method of igniting fuel
D. valve operating mechanism
[单项选择]The diesel engine consumes considerably less fuel than the steam engine for equal output, () enables a motor-ship to load more cargo.
A. why
B. which
C. in which
D. on which
[单项选择]An operating turbocharged diesel engine that suddenly loses power, is due to a/an()
A. restricted turbocharger air intake
B. oil leak into the turbocharger
C. dribbling injector
D. low fuel viscosity
[单项选择]High diesel engine cooling water temperatures can be caused by ().
A. a worn water pump
B. not enough coolant
C. air in the cooling system
D. all of the above

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