According to Maritime Labour Convention, 2006, the minimum age at the time of the initial entry into force of this Convention is 16 yearsNight work of seafarers under the age of _____shall be prohibited.
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The inner part of the condenser should be cleaned with _____.
- A.gas oil
- B.diesel oil
- C.chemical compound
- D.Freon-12
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The purpose of an air compressor unloading device is to _____.
- A.drain water from the air receiver
- B.drain water from the cylinders
- C.delay the compression process until the motor is up to speed
- D.check pump alignment
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Governors are equipped with motors for synchronizing, load sharing and frequency control.
- A.speed setting
- B.load setting
- C.speed changing
- D.load setting
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Thermostatic expansion valves can be adjusted for _____.
- A.suction pressure only
- B.head pressure only
- C.superheat only
- D.suction pressure and box temperature
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Which of the listed characteristics of lube oil are the most important to the engineer from an operational standpoint?
- A.Ash content, carbon residue, and gravity
- B.Viscosity, acidity, and demulsibility
- C.Pour point, flash, point, and precipitation number
- D.Auto-ignition point, viscosity index, and film strength
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Deck machinery, which is also known as hull machinery, includes all power driven equipment located ______ the machinery spaces that is ______ with the main propulsion plant.
- A.inside / associated
- B.inside / not associated
- C.outside / associated
- D.outside / not associated
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A lube oil sample taken from the main engine lube oil system has dark yellow opaque colorThis is the result of .
- A.water contamination
- B.mixing oils of two widely different viscosities
- C.overheating
- D.aeration
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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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The space between cylinder liner and jacket is called _____.
- A.the circulating tank
- B.the scavenge box
- C.the cooling water space
- D.the cooler
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The crankshaft deflection is at first to be _____ before and after repair.
- A.disassembled
- B.renewed
- C.measured
- D.regulated
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