-
If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
A . high steam pressure in the boiler
B . abnormally high feed water temperature
C . abnormally high boiler water temperature
D . steam demand exceeding feed pump capacity
-
Auxiliary diesel engines can be automatically shut down as a result of （）
A . low lube oil temperature
B . low lube oil pressure
C . high exhaust temperature
D . high cooling water pressure
-
An auxiliary diesel engine may fail to start due to（）
A . low exhaust back pressure
B . high lube oil temperature
C . insufficient cranking speed
D . excessive fuel atomizatio
-
If the turbocharger failed on an auxiliary diesel engine, which of the following conditions would probably occur?（）
A . Full power cannot be developed
B . The exhaust will contain black smoke
C . Complete combustion will be impossible
D . All of the above
-
In an auxiliary diesel engine, the reason for knurling the piston skirt is to（）
A . improve skirt lubrication
B . allow for expansion
C . transmit forces evenly
D . improve the piston seal
-
If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）
A . a glazed surface on the spring
B . nicks in the protective coating
C . a build up of sludge deposits
D . cracks in the surface of the spring
-
Excessive alkalinity of the water in an auxiliary boiler can cause （）.
A . caustic embrittlement of the boiler metal
B . acidic corrosion of the boiler metal
C . hard scale deposits on the boiler tubes
D . etching of the heat exchange surface
-
Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）
A . an increased flash point
B . higher lube oil pressures
C . an increased viscosity
D . lower lube oil pressure
-
If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）
A . check the air filter for obstruction
B . check for an exhaust leak
C . check the exhaust temperature
D . secure the engine
-
An auxiliary reservoir for starting auxiliary engines should be kept at （）.
A . low pressure at all times
B . full pressure at all times
C . low pressure at intermittence
D . full pressure at intermittence
-
When using a fuel with a higher than normal sulfur content in an auxiliary diesel engine, you should（）
A . maintain higher than normal jacket water temperature
B . change the lube oil more frequently than normal
C . maintain a higher air-box temperature than normal
D . maintain a higher air-box pressure than normal
-
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
-
Worn main bearing will cause the compression ratio of an auxiliary diesel engine to（）
A . increase
B . decrease
C . remain the same
D . increase on compression decrease on expansio
-
If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）
A . excessively late injection timing for each cylinder
B . incorrectly adjusted intake valve timing
C . incorrectly adjusted fuel injector
D . incorrectly adjusted intake valve clearance
-
Excessive valve lash in an auxiliary diesel engine will cause the valves to open（）
A . later and close sooner
B . sooner and close later
C . sooner and close sooner
D . later and close later
-
The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler （）
A . salinity is abnormally high
B . steam demand is too high
C . water level is abnormally low
D . feedwater flow is low
-
The water in an auxiliary boiler should be tested daily for （）.
A . dissolved oxygen
B . chlorides
C . sludge
D . dissolved nitroge
-
A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.
A . monkey
B . donkey
C . waste heat
D . mai
-
If an auxiliary diesel engine temperature is higher than normal ,but the thermostat is determined not to be defective you would suspect a /an （）
A . cavitation erosion in the water jackets
B . excess corrosion inhibitor in the coolant
C . dirty jacket water cooler
D . defective turbocharger
-
Flame failure in an automatically fired auxiliary boiler can from a/an （）
A . incorrect electrode setting
B . incorrect nozzle position
C . clogged fuel nozzle
D . broken high tension lead
-
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
-
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
-
During waste clothes being charged into an incinerator, the auxiliary burner（）.
A . should be stopped manually
B . keeps the combustion as usual
C . would be cut off by an interlock
D . would replace the waste oil burner and keep going o
-
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
