更多"Exhaust temperature increases in al"的相关试题:
[单项选择]High exhaust temperatures from all of cylinder of a turbocharged, four-stroke/cycle diesel engine can be caused by an（）
A. inoperative turbocharger
B. inadequate fuel supply
C. overload on one cylinder
D. unequal load distribution
[单项选择]Once all cylinders are firing regularly, （） is shut off.
A. the exhaust valve
B. the starting air
C. the inlet valve
D. the fuel oil
[单项选择]All items such as steam pipes, exhaust pipes and fittings which, because of their location and operating temperature, present a hazard should be adequately lagged.That means the items should（）
A. not be put into operation too early
B. be pay adequate attention to
C. be used only when necessary
D. be coated with certain material
[单项选择]In determining safe speed，the Rules list all of the following as factors which must be taken into account EXCEPT the（）.
A. limitations of radar equipment
B. presence of background lights at night
C. maximum horsepower of your vessel
D. maneuverability of your vessel
[单项选择]A rotary current sets through all directions of the compass. The time it takes to complete one of these cycles is approximately（）.
A. 3 hours
B. 6 1/2 hours
C. 12 1/2 hours
D. 25 hours
[单项选择]All of the following are distress signals under the Rules EXCEPT（）.
A. a green star signal
B. orange-colored smoke
C. red flares
D. the repeated raising and lowering of outstretched arms
[单项选择]All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
A. laying a pipeline
B. dredging
C. mineclearing
D. not under command
[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]Boilers and cylinders are（）.
A. raw metallic products
B. finished metallic products
C. consumable products
D. Manufactured goods of large Size
[单项选择]The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to （） the acid conditions.
A. invade
B. provide
C. detergent
D. neutralize
[单项选择]Additional heat extraction from the exhaust gases can be effected by adding an （） section to the unit in plants.
A. air cooler
B. economizer
C. injector
D. air blower
[单项选择]High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by （）.
A. engine overload
B. low combustion temperature
C. plugged fuel nozzle holes
D. excessive compression pressure
[单项选择]Pyrometers commonly found on diesel engine exhaust systems, consist of（）
A. pyrostats and a voltmeter
B. a gas-filled bellows, a tube and a pressure gauge
C. thermocouples and a voltmeter
D. ammeters and thermocouples
[单项选择]Exhaust pyrometer readings provide an indication of the （）
A. effectiveness of water-cooled exhaust elbows
B. distribution of the load between engine cylinders
C. amount of fuel penetration into the engine cylinders
D. indicated horsepower of the engine cylinders
[单项选择]CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
A. the discharge valve is open
B. the control box glass is broken
C. pressure from the control cylinders is detected
D. the control cylinders have been completely discharged
[单项选择]Successful combustion inside the cylinders of a diesel engine is dependent upon （）.
A. fine atomization
B. high temperature
C. good mixing of fuel and air
D. all of the above
[单项选择]Cylinders of marine diesel engines are normally cooled by （）.
A. sea water
B. fine mineral oil
C. sanitary water
D. fresh water
