CAPTAIN'S LICENSE MARINE ENGINE Flashcards
Gasoline tanks should be filled
A) to the top to expel all vapors from the tanks
B) to the top so the operator is certain how much fuel he has aboard
C) with only sufficient fuel for the planned trip so excess gasoline is not carried
D) to near the top with some space allowed for gasoline expansion
D
The nozzle of a gasoline hose or can should be kept
A) in contact with the fill opening to guard against static spark
B) from making contact with the fill opening to guard against static spark
C) in contact with the fill opening to allow proper venting
D) None of the above
A
Gasoline fumes tend to
A) settle near the bottom of the bilge
B) settle near the top of the bilge
C) settle evenly throughout all levels of the bilge by mixing with air
D) disperse to the atmosphere
A
During fueling, all doors, hatches, and ports
A) to windward should be opened and the ones to leeward should be closed
B) to leeward should be opened and the ones to windward should be closed
C) should be opened
D) should be closed
D
Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine, the exhaust blower should be run long enough to
A) warm up the exhaust blower motor
B) provide a proper supply of fresh air for the engine(s)
C) see the system is in good operating condition
D) insure at least one complete change of air in the compartments concerned
D
The shut off valve at the gasoline tank, which can be operated from the outside of the tank space
A) controls the amount of gasoline to the engine
B) shuts off the gasoline supply at the tank
C) is used if the gasoline tank leaks
D) all of the above
B
Diesel engines are considered safer than gasoline engines because
A) they are more heavily built
B) the fuel used is less volatile
C) they can be easily reversed
D) they operate at a lower speed
B
How would the exhaust of a properly operating diesel engine appear?
A) light blue haze
B) light brown haze
C) light gray haze
D) perfectly clear
D
Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by
A) spark plugs
B) glow plugs
C) heat of compression
D) a magneto
C
Vessels required to be equipped with an approved backfire flame arrester are
A) those with diesel engines
B) all those with gasoline engines
C) those with large engines only
D) none of the above
B
When fueling has been completed….
A) The fuel tank fill pipe should be left open to allow vapors to vent from the tank
B) The engine should be started immediately to prevent vapor lock in the fuel line
C) All hatches should be opened and all compartments should be ventilated
D) Open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment
C
Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by…
A) Spark plugs
B) Glow plugs
C) Heat of compression
D) A magneto
C
To find the cause of a gasoline engine’s failure to start, you should…
A) Break the joint in the fuel line at the engine and let the gas run in the bilges
B) Disconnect the wires at the spark plugs and make the spark jump the gap
C) Prime the engine with either through the spark plug openings
D) Ventilate the space, then check the battery, spark plugs, carburetor, and fuel line
D
If a gasoline engine turns over freely but will not start, the cause is generally…
A) A defective ignition system
B) Low lube oil level
C) Weak valve springs
D) Too heavy a load
A
