我
- A.soda solution
- B.mechanical impurities
- C.ballast
- D.water and residuals
- A.protect the pump from fine soluble contaminants
- B.prevent solid particles from entering the pump
- C.prevent solid particles from entering the filter
- D.protect the directional control valves
- A.so a height
- B.such a height
- C.so high
- D.such high
- A.gas freed
- B.inerted
- C.filled with water
- D.all of the above as necessary
- A.prevent the seawater from intergrating
- B.prevent the lube oil from running out of the outside aboard
- C.strengthen the intencity of the sterntube
- D.prevent the mud and sand from entering the lube oil system
- A.later and close sooner
- B.sooner and close later
- C.sooner and close sooner
- D.later and close later
- A.evaporator
- B.condenser
- C.expansion valve
- D.compressor
- A.hose joints are made up
- B.tanks are being topped off
- C.system is being lined up
- D.pumping operation is first started
- A.The diameter of a disc is the same as the outer diameter of the pipe
- B.We can infer that the valve is opened or closed by rotating the spindle
- C.A butterfly valve comprises a disc and a ring body
- D.The profile of the butterfly valve is a ring body
- A.machined
- B.bored
- C.honed
- D.drilled
- A.(1) only
- B.(1) and (2)
- C.(1), (2) and (3)
- D.(2) and (3)
- A.flame retardant
- B.moisture resistant
- C.oil resistant
- D.low conductivity
- A.10%
- B.15%
- C.20%
- D.25%
- A.hazy light
- B.hazy light brown
- C.hazy light blue
- D.hazy light grey
- A.starting air pressure too high
- B.correct timing of starting air valves
- C.three of the six starting valves stuck
- D.the turning gear disengaged
- A.a micrometer
- B.a bridge gauge
- C.a spanner
- D.a wrench
- A.As pressure decreases, volume increases
- B.As volume increases, pressure increases
- C.As volume decreases, pressure decreases
- D.AS pressure increases, volume increases
- A.Full power cannot be developed
- B.The exhaust will contain black smoke
- C.Complete combustion will be impossible
- D.All of the above
- A.reaches to
- B.gets
- C.calls on
- D.calls at
- A.convection
- B.conduction
- C.radiation
- D.direct contact
- A.put out
- B.put on
- C.take off
- D.take in
- A.to give off / which
- B.giving off / which
- C.to give off / that
- D.giving off / that
- 23
-
The movement of heat within a fluid, caused by the application of thermal energy, is called _____.
- A.radiation
- B.conduction
- C.convection
- D.condo-radiation
- A.stays
- B.winches
- C.barrels
- D.brakes
- A.internal crankshaft passages
- B.immersion in oil
- C.splash lubrication
- D.injection lubrication
- A.The density of the air entering the compressor
- B.The temperature of the air entering the compressor
- C.The designed rotating speed of the compressor
- D.A leaking head gasket
- A.cap
- B.disc
- C.tag
- D.cover
- A.to check and inspect foreign ships
- B.to verify the condition of a ship in compliance with requirements of international conventions
- C.to fine ships
- D.to detain ships
- 29
-
The figure that the volume of air at BD.Cis divided by the volume of air at TDC is termed as_____.
- A.ignition ratio
- B.power ratio
- C.compression ratio
- D.injection ratio
- A.Hydrochloric acid
- B.Chlorine
- C.Sulfuric acid
- D.Zinc chromate
- A.any of (1) and (3)
- B.any of (1) and (2)
- C.any of (2) and (3)
- D.any of (1), (2) and (3)
- A.caused by retarded injection timing
- B.caused by a mechanical defect in one cylinder
- C.caused by high fuel injection pressures
- D.normal for these conditions
- A.flange
- B.flash
- C.plate
- D.sheet
- A.has nm continuously for a long period
- B.suction pressure is below normal
- C.oil level is below normal
- D.starts after a long idle period
- A.the most common method used in the United States
- B.too expensive for common use
- C.generally safe to sea life
- D.generally harmful to sea life
- A.The follow-up gear
- B.The rudder angle indicator
- C.The synchronous electric transmitter
- D.A rudder angle limit switch
- A.furnace to be re-purged
- B.electric charge to buildup in the igniter
- C.fuel pump to restart
- D.drum level to stabilize
- A.thermal stresses
- B.bending moments
- C.thermal loads
- D.surface tensions
- A.filled with water
- B.purged
- C.cleared of air
- D.None of the above is true
- A.damage control plan for isolating fire main valves
- B.list of machinery space operation items
- C.complete classification of hazardous materials
- D.detailed listing of all organizations to call in the event of an accidental oil spill
- A.pollution by oil
- B.pollution by noxious liquid substances carried in bulk
- C.pollution by sewage from ships
- D.pollution by garbage from ships
- A.water-tube
- B.fire-tube
- C.exhaust gas
- D.None of the above is true
- A.Class A
- B.Class B
- C.Class C
- D.Class D
- A.open
- B.uncover
- C.covered
- D.closed
- A.I only
- B.II only
- C.both I and II
- D.neither I nor II
- A.metering
- B.control
- C.using
- D.timing
- A.Mill
- B.Float
- C.Warding
- D.Second cut
- A.a low load on that cylinder
- B.sluggish piston ring action
- C.excessive piston crown cooling
- D.excessive clearance of piston pin
- A.Large crosshead type, crossheads
- B.High speed, the cylinders
- C.Large crosshead type, the cylinders
- D.Four-stroke, pistons and cylinders
- A.a cracked cylinder liner
- B.clogged intake ports
- C.broken piston rings
- D.a faulty head gasket
- A.the former
- B.the first
- C.the latter
- D.the last
- A.Absorb erosion of high velocity discharge stream
- B.Seal pump shaft against entry of air
- C.Isolate the discharge side from the suction side
- D.Dampen the turbulent discharge flow
- 53
-
A heater in the circuit facilitates warning of the engine prior to ____ by circulating hot water.
- A.starting
- B.stopping
- C.to start
- D.to stop
- A.hydraulic head
- B.static head
- C.heat energy
- D.steam
- A.cleaning fuel oil, lubricating oil and seawater filter
- B.reducing fuel feeding of the main engine appropriately or reducing the pitch angle of propeller
- C.using low sea chest
- D.closing the skylight and the ventilation opening, which doesn’t affect the normal work of equipments
- A.are made of
- B.are made from
- C.make use of
- D.are used to
- A.only the replacement of the entire pump would be acceptable
- B.the injection pump and injection nozzle must be replaced
- C.either the barrel or plunger must be replaced
- D.the barrel and plunger must be replaced as a unit
- A.waterproof
- B.drip proof
- C.spray tight
- D.spray proof
- A.gravity
- B.motion
- C.ratio
- D.density
- A.change the expansion valve adjustment
- B.readjust the water regulating valve to increase the flow of water
- C.purge air from the condenser
- D.clean the waterside of the condenser
- A.deflection
- B.discrepancy
- C.error
- D.tolerance
- A.diaphragm type gage
- B.pressure transducer
- C.manometer
- D.All of the above
- A.inform. chief engineer officer immediately
- B.stop the generator
- C.let the duty officer in bridge determine how to do
- D.wait for help
- A.Were there loss of energy by friction
- B.Since there be loss of energy by friction
- C.Were there no loss of energy by friction
- D.Should be no loss of energy by friction
- A.distillate
- B.seawater
- C.brine
- D.air
- A.establish SMS in accordance with ISM
- B.establish ISM in accordance with SMS
- C.establish ISM and SMS
- D.both B and C
- A.higher working temperature of piston and cylinder
- B.the use of scavenge ports
- C.fewer power strokes per revolution of the crankshaft
- D.part of the fuel is burned as the piston is moving away from top dead center
- A.power
- B.maximum pressure in a cylinder
- C.mean pressure in a cylinder
- D.all of the above
- A.turning gear
- B.steering gear
- C.spur gear
- D.chain gear
- 70
-
The water level in the gauge glass when a boiler is operating is _____ when the boiler is shut down.
- A.lower than
- B.higher than
- C.below
- D.equal to
- A.on the outgoing tide
- B.overboard after dark
- C.overboard through an oily water separator
- D.anytime in an emergency, i.emain engine lube oil failure
- A.is comfortable
- B.is warm
- C.is not bleeding
- D.has a clear airway
- A.extracts
- B.releases
- C.gives no
- D.absorbs no
- A.available minimum requirements
- B.available maximum requirements
- C.mandatory minimum requirements
- D.mandatory maximum requirements
- A.cavitation erosion in the water jackets
- B.excess corrosion inhibitor in the coolant
- C.dirty jacket water cooler
- D.defective turbocharger
- A.reduce
- B.rise
- C.raise
- D.fall
- A.steps
- B.procedures
- C.precautions
- D.programs
- A.maintain liquid refrigerant at the suction of the compressor
- B.maintain a preset suction pressure to the compressor
- C.start and stop the compressor at preset operating pressures
- D.operate at minimum efficiency
- A.a sump tank
- B.a feed well
- C.a double bottom tank
- D.a drain tank
- A.maintain radial alignment between the pump impeller and casing
- B.absorb all impeller shaft end thrust
- C.prevent water leakage to the atmosphere
- D.prevent wear of the pump casing and/or impeller
- A.check the cylinder exhausts for black smoke
- B.listen for combustion knock in that cylinder
- C.isolate each cylinder and inspect the injector
- D.check the cylinder exhaust temperature frequently
- A.The driven gear
- B.The drive
- C.The grease
- D.The lubricating oil
- A.butterfly valve
- B.globe valve
- C.gate valve
- D.non-return valve
- A.excessive speed
- B.improper warm-up
- C.extreme misalignment
- D.inadequate lubrication
- 85
-
An aluminum piston has lower inertia and higher coefficient of _____ compared to that of cast iron.
- A.viscosity
- B.twisting moments
- C.inertia
- D.thermal expansion
- A.injecting fuel oil into a cylinder
- B.removing exhaust gases from the cylinder
- C.forcing air into the cylinders under pressure after the exhaust valve has dosed
- D.a combination of all the above
- A.cylinder compression pressure may not be high enough
- B.cylinder compression temperature may be too high
- C.fuel oil injection pressure may not be high enough
- D.scavenge and purge process is incomplete
- A.Overcoming sliding friction
- B.Overcoming rolling friction
- C.Overcoming fluid friction
- D.Overcoming oil wedge friction
- A.To prevent internal damage form. local overheating
- B.To ensure the fuel nozzles are flushed clean
- C.To clear the smoke stack
- D.To let the waste heat boiler reduce its rate of steam generation
- A.accidents
- B.special valve chests
- C.interchangeable blanks
- D.connecting passages
- A.prevent an internal explosion in the pump when it is overheated
- B.enable a visual inspection of the pump while it is running
- C.insure a proper alignment of the pump coupling to the driver
- D.accommodate for friction between the impeller and the easing
- A.Piston
- B.Sounding
- C.Regulating
- D.Connecting
- A.air
- B.heat
- C.sludge
- D.steam
- A.inform. the chief engineer whenever there are problems
- B.reduce the time wasted on checking items
- C.know who is responsible for the domestic cleaning equipment
- D.know the chain of authority on the ship
- A.leaky exhaust valve
- B.increased scavenging air temperature
- C.engine cylinders not scavenged sufficiently
- D.water in the fuel oil
- A.Constant inspection
- B.Keeping constant load
- C.Remaining constant temperature
- D.Varying speed
- A.Class A
- B.Class B
- C.Class C
- D.Class D
- A.the flashing of the feed water
- B.the condensation of the saltwater feed
- C.air ejectors, eductors, or a separate vacuum pump
- D.condensation of the distillate
- A.as well as
- B.as long as
- C.rather than
- D.other than
- A.When receiving by
- B.When received by
- C.In order to receiving
- D.In order to receive
- A.cooling water
- B.vapor from the boiler
- C.starting air
- D.hot gases
- A.Only one pump should be used at any time
- B.The ship speed should be reduced to 70% of the normal
- C.Watch keeping of the steering gear should be increased
- D.Limitations of the steering gear should be logged but the bridge need not be informed
- A.worn or broken cylinder liner sealing rings
- B.high cooling water temperature
- C.worn or broken piston rings
- D.low fuel oil pressure
- A.viscosity will decrease
- B.volume will increase
- C.volume will decrease
- D.pour point will be reduced
- A.horsepower
- B.work
- C.heat
- D.velocity
- A.nip
- B.nap
- C.gap
- D.lip
- A.increase the field excitation
- B.decrease the field excitation
- C.increase the number of magnetic poles
- D.increase the speed of the prime mover
- A.compressor
- B.condenser
- C.evaporator
- D.expansion valve
- A.breaking up solid matter into fine particles
- B.precipitating non-decomposed waste in a collection tank
- C.chemically adjusting the sewage ph to 7.0
- D.eliminating bacterium coli from the sewage
- A.less than
- B.lighter than
- C.larger than
- D.smaller than
- A.the worse
- B.the better
- C.the smaller
- D.the greater
- A.it exceeds 3 years from date of issue
- B.an alteration approved by the Captain of the Port is made
- C.an intermediate survey has not be conducted within 12 months from the date that the IOPP was issued
- D.the vessel is transferred to the flag of another country
- 113
-
One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is _____.
- A.the "snow" which is sometimes discharged along with the gas is toxic
- B.prolonged exposure to high concentrations of C02 gas causes suffocation
- C.rapid dissipation of the CO2 vapor
- D.the CO2 gas is lighter than air and a large amount is required to extinguish a fire near the deck
- A.horse power
- B.high pressure compressor
- C.hand pump
- D.high pressure
- A.after TDC
- B.before TDC
- C.after BDC
- D.before BDC
- A.I + II
- B.I ~ III
- C.I ~ IV
- D.I + II + IV
- A.Refrigerator
- B.Refrigerant
- C.Cooling medium
- D.Brine
- A.transmitting the heat of a fire through the ships metal
- B.burning liquids flowing into another space
- C.heated gases flowing through ventilation systems
- D.the transfer of heat across an unobstructed space
- A.The high temperature facilitates primary gravity separation
- B.Most of the oil and organic solvents are raised to the top layer
- C.The high the temperature is, the more the top oil will be collected
- D.The high temperature has little use on the separation of emulsified oil
- A.cylinder pressure
- B.flame intensity
- C.exhaust gas temperature
- D.crankshaft axial alignment
- A.visual inspection of the elements
- B.the pressure drop across the filter
- C.high lube oil sump temperature
- D.decrease in oil viscosity from the filter
- A.east iron firings
- B.mild steel fittings
- C.small fittings
- D.large fittings
- A.temperature in the space being cooled
- B.liquid refrigerant pressure at the solenoid valve
- C.pressure drop across the evaporator coils
- D.refrigerant gas superheat at the coil outlet
- A.is due to
- B.dues to
- C.is because
- D.is for
- 125
-
The ignition quality of a fuel oil is an important operational consideration because it________.
- A.indicates the amount of abrasive material in the fuel
- B.affects the starting ability of a cold engine
- C.determines the amount of fuel penetration engine
- D.affects the compression ratio of an operating engine
- A.journal
- B.crank-pin
- C.main bearing
- D.large end of connecting rod
- A.governor flyweight action on a pilot valve which controls fuel injection
- B.governor flyweight motion acting on fuel controls through suitable linkage
- C.positioning a butterfly valve in the fuel delivery system positioning
- D.a servomotor piston attached to the fuel controls
- A.be jammed
- B.be opened
- C.be seated
- D.be broken
- A.Faulty turbocharger turbine diffuser ring
- B.Faulty turbocharger compressor ring
- C.Insufficient cooling water flow
- D.Clogged air intake filters
- A.film
- B.cap
- C.lacquer
- D.shell
- A.firing for extended periods in the low fire mode
- B.overheating, due to waterside deposits
- C.varying the water level above the crown sheet
- D.carrying excessive alkalinity in the boiler water
- A.higher firing pressure
- B.more power output
- C.lower fuel pressure
- D.less power output
- A.temperature
- B.density
- C.volume
- D.pressure
- A.governor malfunctions
- B.fuel injection system malfunctions
- C.high cylinder lube oil temperatures
- D.low intake temperatures
- A.discharges into a gradually widening channel
- B.has stationary diffuser vanes
- C.produces no kinetic energy
- D.All of the above are true
- A.disperse
- B.coalesce
- C.compress
- D.shrinkage
- A.running at the same speed
- B.grounded
- C.of the same polarity
- D.in phase
- A.a service tank
- B.a collecting tank
- C.a sump
- D.a settling tank
- A.before TDC and close after BDC
- B.after TDC and close after BDC
- C.before TDC and close before BDC
- D.after TDC and close before BDC
- A.to remove heat from oil cooled pistons
- B.to wash away wear detritus
- C.to neutralize acidic products
- D.all of the above
- 141
-
Cooling of engines is achieved by _____ a cooling liquid around internal passages within the engine.
- A.flowed
- B.flowing
- C.mixing
- D.circulating
- A.the bad smoke
- B.the smoky exhaust
- C.the exhaust temperature
- D.the peak pressure
- A.improper adjustment
- B.contaminated fuel
- C.kinked fuel lines
- D.excessive engine vibration
- A.Pump diesel oil first
- B.300 tons of 180 cst fuel oil
- C.The figure is all right
- D.OK, I’ll sign it
- A.fresh water expansion tank
- B.sea water expansion tank
- C.thermostatic expansion valve
- D.jacket water cooler accumulator
- A.temperature
- B.pressure
- C.velocity
- D.heat
- A.moisture in the compressed air supply
- B.excessive dryness in the compressed air supply
- C.pressure surging in the compressed air receiver
- D.insufficient lubrication of the system components
- A.kg
- B.MPa
- C.mH20
- D.None of the above
- A.control axial movement of the crankshaft
- B.transmit engine thrust to the propeller shaft
- C.absorb vibrations in the propeller shafting
- D.prevent propeller thrust from being transmitted to the hul
- A.physical state
- B.temperature
- C.atmospheric pressure
- D.sensible pressure
- A.in /out port
- B.passing through big bridge
- C.big steering angle for direction changing
- D.in /out port and passing through big bridge
- A.water
- B.fresh air
- C.fuel oil
- D.gas
- A.air binding of the engine cooling system
- B.a cracked water cooled exhaust manifold
- C.blockage in the heat exchanger
- D.faulty operation of the thermostat
- A.increase exhaust gas velocity through the boiler
- B.reduce accumulations of carbon deposits on the heat transfer surfaces
- C.eliminate exhaust gas pulsations and noise
- D.increase the rate of heat transfer to the waterside
- A.pilot valve opening
- B.compensating needle valve
- C.compensating spring tension
- D.accumulator spring tension
- A.ground the board
- B.avoid reversing the polarity of the leads
- C.isolate sensitive components with heat sinks
- D.all of the above
- A.reciprocating pump
- B.positive displacement pump
- C.centrifugal pump
- D.centripetal pump
- A.fuel pumps
- B.cylinders
- C.fuel strainers
- D.all of above
- A.Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliable
- B.The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower
- C.When forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operation
- D.Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
- A.Safety valves
- B.Water tubes
- C.Steam stop valves
- D.Blow down valves
