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发布时间:2023-10-20 12:53:27

[单项选择]High exhaust back pressure will result in an increase in ()
A. turbocharger efficiency
B. engine power output
C. carbon deposits on fuel injectors
D. cylinder scavenging

更多"High exhaust back pressure will res"的相关试题:

[单项选择]Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ().
A. reduce engine horsepower output
B. aid in silencing the exhaust noise
C. increase the mean effective pressure
D. contribute to effective cylinder scavenging
[单项选择]Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because ()
A. oil foaming will occur
B. large quantities of oil are consumed
C. lube oil viscosity is always decreased
D. corrosive by-products are usually formed
[单项选择]Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()
A. Impeller
B. Compressor
C. After-cooler
D. Exhaust differ
[单项选择]For a vessel with transverse inclination, an increase in GMT causes().
A. list to stabilize at an angle of loll
B. list to decrease
C. trim to decrease
D. list to increase
[单项选择]The development of () has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.
A. water
B. fresh air
C. oils
D. gases
[单项选择]条件表达式(result)?"true":"false"的意义是(),其中result是逻辑表达式。
A. 如果result为true,则表达式的值是true,否则为false
B. 如果result为false,则表达式的值是true,否则为false
C. 如果result为true,则表达式的值是false,否则为true
D. 表达式错误
[单项选择]Crankcase explosions in propulsion diesel result from()
A. the splashing of lubrication oil by the crankshaft
B. the dilution of crankcase oil with particles of combustion
C. broken fuel lines spraying oil on the crankcase
D. the ignition of unburned fuel and air in the crankcase
[单项选择]What could be a result of insufficient lubrication of lifeboat winches and davits?()
A. Moisture accumulation in winch motor damaging the electrical wiring
B. Freezing of gears in cold weather
C. Corroding of sheaves on the davits so they will not rotate
D. All of the above
[单项选择]RESULT OF SEARCH NEGATIVE means().
A. the search has found nothing
B. the derelict has been found
C. the derelict has been located
D. the derelict has been sighted
[单项选择]What condition will result in the automatic shutdown of a diesel engine? ()
A. High jacket water pressure
B. High lube oil pressure
C. Low lube oil pressure
D. Excessive turbo charger speed
[单项选择]Spontaneous ignition can result from().
A. an unprotected drop-light bulb
B. careless disposal or storage of material
C. smoking in bed
D. worn electrical wires on power tools
[单项选择]Scouring is the result of().
A. interruption of the normal current flow by the footing
B. elevating in mud-slide zones
C. penetrating rapidly through a hard crust into weaker soils
D. extracting legs from soils with high cohesion
[单项选择]Excessive lube oil consumption can result from worn or broken()
A. piston rings
B. valve guides
C. valve seals
D. all of the above
[单项选择]Worn diesel engine intake valve guides can result in ()
A. increased engine breathing efficiency
B. excessive valve lash
C. excessive lube oil consumption
D. lower than normal fuel consumption
[单项选择]The majority of cargo gear breakdowns are a result of().
A. guy failures
B. topping lift failures
C. bending of the boom from compression
D. gooseneck failure
[单项选择]The result of two forces acting in opposite directions and along parallel lines,is an example of what type of stress?()
A. Tensile
B. Compression
C. Shear
D. Strain
[单项选择]Overheating of a hydraulic system may be a result of ().
A. changing pump discharge pressure in response to normal load variations
B. a high oil level
C. incorrect fluid viscosity
D. continued slow re-circulation of the oil

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