更多"What occurs in the combustion space"的相关试题:
[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]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]In the construction of a diesel engine, what is the purpose of end plates?（）
A. To provide accessibility to the cylinder liners
B. To add stability to the engine block
C. To add rigidity to the block and a surface for attaching other parts
D. To make a surface for the base
[单项选择]Persistent knocking in one cylinder of a diesel engine could be caused by（）.
A. a low load on that cylinder
B. sluggish piston ring action
C. excessive piston crown cooling
D. excessive clearance of piston pin
[单项选择]According to the principle of two stroke diesel engine, what is the number of its efficient work stroke per revolution?（）
A. 1/2
B. 1
C. 2
D. 3
[单项选择]Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of （）
A. low loading of that cylinder
B. faulty combustion in that cylinder
C. sluggish piston ring action
D. excessive piston cooling
[单项选择]Water accumulating in the crankcase of a diesel engine could indicate（）
A. a cracked cylinder liner
B. excessive water in the fuel
C. a leaking intercooler
D. excessive moisture in the scavenge air
[单项选择]Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will（）
A. increase engine power
B. increase engine load
C. decrease engine power
D. improve fuel economy
[单项选择]A faulty thermostatic bypass valve, in a diesel engine cooling system, can result in （）
A. excessive time required for warming-up
B. excessive freshwater corrosion
C. scale formation on the saltwater side
D. saltwater mixing with the freshwater
[单项选择]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.
A. cylinder compression pressure may not be high enough
B. cylinder compression temperature may be too high
C. fuel oil injection pressure may not be high enough
D. scavenge and purge process is incomplete
[单项选择]What is an advantage of diesel over steam turbine propulsion? （）
A. Less fuel consumption per SHP
B. Diesel fuel costs less than bunker C or its equivalent
C. Less routine maintenance required
D. Less weight per SHP
[单项选择]What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?（）
A. increased carbon buildup
B. burning of intake valves
C. excessive firing pressures
D. increased fuel consumption
[单项选择]What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
A. Spark plug
B. Heat of compression
C. Carburetor
D. Glow plug
[单项选择]What does a pyrometer measure on a diesel engine? （）
A. Water temperature
B. Water pressure
C. Exhaust temperature
D. Air box pressure
[单项选择]What is one effect of running a diesel engine at too cool a temperature? （）
A. Buildup of sludge in the lubricating system
B. Excessive fuel consumption
C. Severe heat stresses on mechanical parts
D. Foaming of the lubricating oil
[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
