During the running of the diesel engine, if the supply of cooling water is interrupted or the temperature of cooling water out of the cylinder is too high, the duty engineer should ____.
- A.notify the duty officer, reduce the engine speed, take some measures to remove failures
- B.notify the duty officer and stop the engine immediately, find the cause and remove failures
- C.notify the C/E
- D.notify the captain
-
When two oil separators are working in series, they should work with ____.
- A.both as clarifiers
- B.first one as clarifiers, second one as purifier
- C.both as purifiers
- D.first one as purifier, second one as clarifier
-
What is the harmful effect of sulfur in a fuel?
- A.It causes excessive smoking and soot at low firing rates
- B.It doesn’t readily burn when combined with oxygen
- C.It clogs fuel oil strainers more often
- D.It forms a corrosive acid when mixed with water or water vapor
-
Shaker, circulation and spray are the three general methods used in __________
- A.pre-injection fuel oil treatment
- B.lube oil filtration
- C.lube oil purification
- D.piston cooling
-
______ is used to prevent the entry of sea water to the machinery space.
- A.A special sealing gland
- B.Propeller
- C.Tailshaft
- D.Sterntube bearing
-
The crankshaft is of the semi built type, with the journal _____ the forged or cast steel crank throws.
- A.shrunk into
- B.expanded into
- C.extended into
- D.designated into
-
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.with the approval of the chief engineer only
-
The part of the anchor windlass that engages the anchor chain for lifting is called the _____.
- A.warping head
- B.fairlead
- C.wildcat
- D.capstan
-
If the pump for a hydraulic anchor windlass is overheating, the cause may be _____.
- A.excessive drive motor speed
- B.excessive pump discharge pressure
- C.too low of a tilting box angle
- D.insufficient drive motor speed
-
Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes____ as prime mover.
- A.gas turbine
- B.diesel engine
- C.steam engine
- D.gasoline engine
-
If the capacity of the refrigeration compressor is too small, the excess vapor will accumulate in the evaporator, causing the pressure to _____.
- A.rise
- B.fall
- C.be maintained constant
- D.None of the above is true
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