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单选题
Main diesel engine control can be obtained by the bridge （）
A
at any time
B
only after the engine room control station is switched to ‘bridge control’
C
whenever the secondary station is switched to ‘bridge control’
D
whenever the engine side control station is switched to ‘bridge control’
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考题
Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because________.A.The direction of pressure on the journal in four-stroke engine is continuouslyB.positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engineC.four-stroke engines usually utilize a heavier grade of oil than tow-stroke enginesD.Low-stroke engines usually consume less lube oil than four-stroke engines
考题
With UMS, when the engine room is unwatched will control the main engineA.the bridge officer on watchB.the chief engineerC.the duty engineerD.the duty motorman
考题
If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measures the engineer on duty should _______.A.stop main engine immediatelyB.ask the captain and the chief engineer's permission for stopping the engineC.inquire the bridge for the situation initiativelyD.stop engine and inform bridge
考题
On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the______.A.accumulator spring compressionB.balance pistonC.compensating(补偿) needle valveD.proportional piston
考题
单选题With UMS, when the engine room is unwatched （） will control the main engine.A
the bridge officer on watchB
the chief engineerC
the duty engineerD
the duty motorman
考题
单选题Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）A
increasing the quantity of starting airB
increasing the lube oil pressureC
heating the engine fuel supplyD
heating the engine jacket water
考题
单选题As a heat engine,（） energy is the source of power by which the diesel engine can be operated.A
electricB
heatC
mechanicalD
exhaust
考题
单选题Worn main bearings in a diesel engine can result in （）A
decreased compression pressureB
increased lube oil pressureC
lower lube oil temperatureD
excessive leakage past the piston rings
考题
单选题Load control on a diesel engine is accomplished by （）.A
regulating the speed of the turbochargerB
rotating the fuel injector pump plungerC
regulating the speed of the fuel oil transfer pumpD
changing engine timing
考题
单选题Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.A
wheelhouse control stationB
engine room control stationC
captains officeD
chief engineers office
考题
单选题For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.A
oil sprayB
oil bathC
oil control ringsD
drilled passage through the camshaft
考题
单选题If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measuring the engineer on duty should （）A
stop main engine immediatelyB
ask the captain and the chief engineer’s permission for stopping the engineC
initiatively inquire the bridge for the situationD
stop engine and inform bridge
考题
单选题Why a gearbox is needed in a ship driven by a medium-speed diesel engine?（）A
To reduce the main engine speedB
To increase the main engine speedC
To govern the main engine speedD
To fix the propeller shaft
考题
单选题Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because（）.A
The direction of pressure on the journal in four-stroke engine is continuouslyB
positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engineC
four-stroke engines usually utilize a heavier grade of oil than tow-stroke enginesD
Low-stroke engines usually consume less lube oil than four-stroke engines
考题
单选题Diesel engine control can be obtained by the bridge （）.A
at any timeB
only after the engine room control station is switched to “bridge control”C
whenever the secondary station is switched to bridge controlD
with the approval of the chief engineer only
考题
单选题Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.A
temperatureB
pressureC
engine speedD
all of the above
考题
单选题Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）A
bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversedB
bearing pressure in a two-stroke/cycle single acting diesel engine is continually reversedC
the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engineD
two-stoke/cycle diesel engines require more complicated lubrication piping
考题
单选题Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.A
exhaust gas temperature systemB
exhaust load systemC
constant or pulse pressure systemD
constant volume system
考题
单选题Under which of the listed conditions can the engine room retake the throttle control from the bridge（）.A
Any time it is deemed necessaryB
Only with the masters permissionC
After a 10 minute delay to the input commandD
Only after the throttle has been placed in stop
考题
单选题UMS are mainly unattended overnight and during this time （） should have control of the main engine.A
the chief engineerB
the engineer on cabin watchC
the bridge officer on watchD
the master
考题
单选题Main diesel engine control can be obtained by the bridge （）A
at any timeB
only after the engine room control station is switched to ‘bridge control’C
whenever the secondary station is switched to ‘bridge control’D
whenever the engine side control station is switched to ‘bridge control’
考题
单选题On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）A
accumulator spring compressorB
balance pistonC
compensating needle valveD
proportional piston
考题
单选题Bridge gauge can be used to measure （） of a diesel engine.A
diameters of journalsB
deflections of crankwebsC
diameters of crankpinsD
none of the above
考题
单选题Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）A
Defective temperature controls in the systemB
Cavitation in the cooling water pumpC
Opened vent in the cooling systemD
Restricted water passages in the engine
考题
单选题The indicated power of an engine can be obtained by taking the （）.A
precautionsB
rpmC
indicator cardsD
B and C
考题
单选题The rotary motion of a diesel engine crankshaft is obtained from the up and down motion of the piston via the （）.A
camshaftB
reduction gearsC
rocker armD
connecting or piston rod
考题
单选题In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the （）A
governor droopB
speeder spring tensionC
fuel rack lagD
load on the engine
考题
单选题Which is false about engine trials?（）A
engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air brieflyB
in the operation of engine trails, the main engine should be running in low-speedC
As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same timeD
the order “engine trials” should be given by the bridge
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