更多"Lubricating oil viscosity in an ope"的相关试题:
[单项选择]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
[单项选择]A smoking exhaust from an operating diesel engine could be caused by （）
A. low sulfur content in the fuel
B. a loose injector inlet connection
C. late fuel injection
D. high injection pressure
[单项选择]The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the （）
A. expansion of the combustion gases
B. exhaust and intake valves just closing
C. maximum compression is just being attained
D. fuel injection occurring at that point and combustion begins
[单项选择]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
[单项选择]The operating diesel generators will have their exhaust temperatures, cooling water and lubricating oil temperatures and pressures （） in much the same way as for the main engine.
A. to be kept
B. logged
C. changed
D. has remained
[单项选择]Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）
A. water in the fuel
B. insufficient fuel for combustion
C. clogged air intake passages
D. burning lubricating oil
[单项选择]Diesel oil may be used to cool （） of a diesel engine.
A. cylinders
B. exhaust valves
C. pistons
D. fuel valves
[单项选择]In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.
A. metal particles loosened by wear
B. air when no air cleaners are used
C. condensation of water vapors
D. breakdown of the lubricating oil by dilution
[单项选择]In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
A. noise coming from that air starting valve
B. continuous operation of the starting air compressor
C. zero air pressure in the air starting system
D. overheated starting air pipe to the cylinder head
[单项选择]Burning diesel oil should be treated as which class of fire?（）
A. Class "A"
B. Class "B"
C. Class "C"
D. Class "D"
[单项选择]In an operating diesel engine, pre-ignition can be caused by （）
A. excessively late fuel injection
B. oil in the air charge
C. water in the fuel
D. injection continuing after the fuel charge is ignited
[单项选择]Please supply my vessel（）120 tons of diesel oil.
A. for
B. with
C. to
D. on
[单项选择]The booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.
A. the main engines
B. the auxiliary engines
C. the emergency generator engine
D. the auxiliary engines and the main engine(s)
[单项选择]The （） of the diesel oil must not exceed 120 degree Fahrenheit.
A. temperature
B. pressure
C. acid value
D. viscosity
[单项选择]If diesel oil in this tank is used, the （） of the oil must not exceed 120 degree F.
A. viscosity
B. flash point
C. acid value
D. temperature
[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
