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If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will （）
A . decrease until the engine speed increases
B . increase as the load increases
C . decrease as the load
D . increases remain unchanged
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Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.
A . increase
B . decrease
C . fluctuate
D . remain constant
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An over-speed trip stops a diesel engine when the engine （）
A . runs out of fuel
B . has low lubricating oil pressure
C . exceeds a set maximum speed
D . has high cooling water temperature
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?（）
A . Engine is hard to start
B . Engine misses
C . Surges at governed RPM
D . Coolant temperature is too low
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On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine （）
A . speed will drop drastically with any increase in load
B . will stop due to zero fuel supply
C . will stall upon application of load
D . speed will remain fairly constant despite load change
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An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）
A . week
B . 2 weeks
C . month
D . 3 month
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The device used to limit engine torque at various engine speeds is called a （）
A . speed limiting governor
B . variable speed governor
C . constant speed governor
D . load limiting governor
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An individual injection pump is designed for variable beginning and constant ending of injectionFor diesel engines operating at constant speeds, the start of injection will（）
A . advance as the load increases
B . retard as the load increase
C . remain unchanged regardless
D . always occur at top dead center
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The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by （）.
A . direct action of cam shaft
B . compressed air pressure
C . hydraulic “push rods”
D . direct action of the main piston moving dow
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The ability of the governor to prevent fluctuations in engine speed is termed （）.
A . sensitivity
B . stability
C . promptness
D . speed droo
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On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an （）
A . dial indicator
B . outside caliper
C . bridge gauge
D . tram rod
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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 downward
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Each cylinder liner on the marine medium speed engines （）.
A . is usually cooled by sea water
B . can be replaced when worn out
C . is in direct contact with the water in the bore of the cylinder
D . can t expand when heated
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What is the minimum recommended uplink/downlink speed to support a single encrypted IP voice Teleworker call?（）
A . 256kbps / 1024kbps
B . 256kbps / 1544kbps
C . 160kbps / 768kbps
D . 384kbps / 384kbps
E . 128kbps / 512k
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The hydraulic （） is used to control engine speed.
A . motor
B . pump
C . governor
D . capsta
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The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.
A . two-stroke
B . four-stoke
C . long-stroke
D . short-stroke
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An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.
A . manoeuvring operations
B . bad combustion
C . cooling
D . mooring trial
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“The engine not obtaining the sufficient speed for firing” means that （）.
A . the start fails
B . the fuel pumps will be put into operation
C . the fuel valves are damaged
D . the combustion process will take over
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On most diesel engines, the governor controls the output speed by （）.
A . controlling the amount of fuel injected into the cylinders
B . varying the speed of the turbocharger
C . adjusting the compression ratio
D . changing the timing of the fuel injection camshaft
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Critical speeds occurring within the operating speed range of a main propulsion diesel engine may be changed, or have their damaging effects reduced by a/an （）
A . engine support vibration isolator
B . detuner or viscous fluid damper
C . lightened crankshaft flywheel
D . spherically seated crankshaft bearing
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If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）
A . fuel pump should be removed and all connections blanked off
B . cylinder oil feed rate should be increased slightly above that used at normal sea speed
C . cylinder oil feed rate should be reduced
D . cylinder oil feed rate should be increased to the maximum flow capable of the metering pum
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While the maximum speed limit on China’s expressways is set, there is no minimum speed limit on expressways in China.
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If a four-engine air carrier airplane is dispatched from an airport that is below landing minimums, what is the maximum distance that a departure alternate airport may be located from the departure ai
A、Not more than 2 hours at cruise speed with one engine inoperative
B、Not more than 2 hours at cruise speed in still air with one engine inoperative
C、Not more than 1 hour at cruise speed in still air with one engine inoperative
