我
- A.under high pressure
- B.under low pressure
- C.heated to reduce viscosity
- D.cooled to increase viscosity
- A.end-chock bolts
- B.side-chock bolts
- C.through bolts
- D.tie rods
- A.Should knocking occur
- B.If knocking occur
- C.Should if knocking occurs
- D.If occur knocking
- A.flooding back
- B.superheating
- C.overflowing
- D.recycling
- A.Ship security officer
- B.Company security officer
- C.Port facility security officer
- D.PSC officer
- A.hoisting system only
- B.hoisting system and luffing system
- C.hoisting system and slew and slewing system
- D.slewing system only
- A.high-pressure steam-driven air-ejector
- B.motor-driven vacuum pump
- C.water-motivated air eductor
- D.centrifuge pump
- 8
-
A diesel engine will lose power if fuel injection occurs too late in the cycle, because the _____.
- A.fuel droplets will burn as they leave the fuel injector
- B.fuel will not be properly atomized in the cylinder
- C.maximum expansion of the burned fuel cannot take place in the cylinder
- D.compression pressure will be too low to cause fuel ignition
- A.sensible heat
- B.latent heat
- C.total heat
- D.residual heat
- A.Ship security officer
- B.Company security officer
- C.Port facility security officer
- D.PSC officer
- A.higher boiling temperature for a given pressure than does a pure refrigerant
- B.lower boiling temperature for a given pressure than does a pure refrigerant
- C.boiling pressure equal to that of a pure refrigerant at a given pressure
- D.boiling point will not be affected by entrained oil
- A.overloading in all cylinders
- B.a jammed three-way thermostatic valve
- C.chromate PH too low
- D.a high level in the surge tank
- A.exhaust manifold
- B.valve bridge
- C.pressure of the fresh air charge
- D.valve adjusting gear
- A.portable tools
- B.large pump motors
- C.turbo electric main motors
- D.forced draft fans
- A.cannot be detected tinder normal conditions
- B.is of no consequence to engineering personnel
- C.is indicated at the branch circuit breaker panel
- D.is indicated by the ground detecting lamps on the main switchboard
- A.paved
- B.cleaned
- C.welded
- D.dismantled
- A.Static electricity
- B.An open running electric motor
- C.Loose wiring
- D.Explosion proof lights
- A.electromagnetic field, revolving armature type
- B.electromagnetic field, oscillatory armature type
- C.armature, oscillatory electromagnet field type
- D.armature, rotating electromagnetic field type
- A.severe electrical storm
- B.fire on the pier
- C.fire on the ship
- D.any of the above
- A.damage to strainers
- B.over-speeding of the engine
- C.excessive cooling of the engine
- D.injector damage
- A.allow an alternate main pump to start in the fully loaded condition thus developing immediate full torque
- B.prevent either main pump from being hydraulically motored when idle by cross pressure flow
- C.prevent both units from operating simultaneously which could result in doubling the flow of oil and pressure leading to over pressurization of the system
- D.all of the above
- A.is scavenged
- B.has been scavenged
- C.be scavenged
- D.was scavenged
- A.10 hours in any 24-hour period
- B.72 hours in any seven-day period
- C.ten hours in any 24-hour period
- D.88 hours in any seven-day period
- A.centrifuging the fuel
- B.using it in the engine
- C.heating the fuel tanks
- D.starting the fuel
- A.lubrication
- B.injection
- C.cooling
- D.combustion
- A.control fuel injection time more precisely
- B.control fuel injection rate more precisely
- C.meet the environmental requirements
- D.meet high engine speed requirements
- A.four-stroke
- B.two-stroke
- C.slow speed
- D.reversible
- A.closed discharge valve
- B.broken pipe line
- C.worn shaft
- D.both A and B
- A.twice as large as with a cast iron piston
- B.the same size as with a cast iron piston
- C.half as large as with a cast iron piston
- D.the same size as the crown of an aluminum piston
- A.The crankshaft
- B.The crankcase
- C.The guide-ways
- D.The frames
- A.open circuit
- B.short circuit
- C.polarized ground
- D.ground reference point
- A.prevents spark generation
- B.removes combustible gases
- C.determines the level of combustible gases
- D.provides inert gas generation in crankcase
- A.a centrifuge
- B.an electric motor
- C.a bowl assembly
- D.a driving motor
- A.They conduct heat poorly
- B.They are expensive
- C.They cannot be replaced
- D.They require special tools for removal
- A.wheel
- B.crankshaft
- C.running gear
- D.cam
- A.steel guides
- B.steel shells
- C.steel bearing caps
- D.pig iron
- A.decreased compression ratio
- B.higher than normal power consumption
- C.un-loader malfunction
- D.water in the lubricating oil
- A.Keeps the refrigerated space cooler
- B.Reduces the efficiency of the plant
- C.Takes the load off the compressor
- D.Has no affect on the system
- A.Engine is hard to start
- B.Engine misses
- C.Surges at governed RPM
- D.Coolant temperature is too low
- A.vaporizes in the condenser
- B.reaches the compressor through the suction line
- C.flashes in the liquid line
- D.condenses in the receiver
- A.non-synchronous electric motor
- B.synchronous electric motor
- C.fully enclosed electric motor
- D.watertight electric motor
- A.resist changes in viscosity with changes in temperature
- B.resist emulsification
- C.neutralize acids
- D.resist oxidation at high temperatures
- A.pumped up
- B.loaded
- C.discharged
- D.opened
- A.Class "A"
- B.Class "B"
- C.Class "C"
- D.Class "D"
- A.removing heat and deposits
- B.neutralizing acidic products
- C.lubricating
- D.improving combustion efficiency
- A.air
- B.passages
- C.pipes
- D.means
- A.six months
- B.two years
- C.four years
- D.five years
- A.local port authority
- B.Corps of Engineers
- C.U.SCoast Guard
- D.state pollution board
- A.coolant for the distillate
- B.coolant for the brine cooler
- C.means of heating the feedwater
- D.primary means of producing a vacuum within the distiller
- A.blow out coils
- B.governor relay
- C.under voltage trips
- D.reverse current trips
- A.transmit the rudder angle to the bridge indicator
- B.prevent the control linkage from striking the stops when hard over
- C.automatically purge all entrained air from the system
- D.send hydraulic signals to the receiving unit
- A.more / more
- B.more / less
- C.less / more
- D.less / less
- A.lime
- B.frost
- C.scale
- D.scar
- A.not good
- B.good
- C.better
- D.the best
- 55
-
Which of the following machinery space operations is required to be logged in the Oil Record Book?
- A.Ballasting or cleaning of fuel oil tanks
- B.Shifting suction of main fuel pump to reserve fuel oil tank
- C.Changing out sprayer plates to adjust for steam demand
- D.Daily inspection of engine room bilges
- A.make sure
- B.be sure
- C.assure
- D.believe
- A.lining
- B.lined
- C.made
- D.in
- A.It needs not to be regularly replaced
- B.It is designed to protect from possible impact
- C.It is required to be worn on deck at all times by all ships
- D.fibreglass hardhat should not be used on board ships
- A.fill the unit with saltwater
- B.fill the unit with de-scaling compound
- C.completely drain the unit
- D.tightly seal the unit to exclude air
- A.compression
- B.maximum
- C.rated
- D.oil
- A.seal the space between the piston and liner
- B.transmit heat from the piston to the cylinder liner
- C.reduce the amount of combustion gas blow-by
- D.all of the above
- A.the emergency lighting system for muster and abandon ship
- B.air/oil emergency shut-down
- C.M.Eemergency operation
- D.main/auxiliary steering gear changing
- A.time
- B.space
- C.length
- D.visibility
- A.the hunting gear
- B.the rudder stock
- C.the rudder controller
- D.the feedback unit
- A.TAN
- B.TBN
- C.SAN
- D.SBN
- A.it is difficult for them to finish the job in time
- B.difficult for them to finish the job in time
- C.they have much difficulty to finish the job in time
- D.that difficult for them to finish the job in time
- A.Fixed CO2, semi-portable CO2, then hand portable CO2
- B.Semi-portable CO2, fixed CO2, then hand portable CO2
- C.Hand portable, semi-portable CO2, then as a last resort the fixed CO2 system
- D.Hand portable, fixed CO2, then as a last resort the semi-portable CO2
- A.Oil inlet valve opening too quickly
- B.Oil temperature too high
- C.Diameter of gravity disc too small
- D.Viscosity of oil too low
- A.the inlet valve is open
- B.the exhaust valve is open
- C.both valves are closed
- D.both valves are open
- A.blows out the exhaust gases
- B.supplies oxygen for combustion
- C.cools the valves and cylinder walls
- D.all of the above
- A.excess amount of oily-water mixtures in bilges
- B.insulation of piping including exhaust pipes in engine room contaminated by oil
- C.improper operation of bilge pumping arrangements
- D.there were an actual emergency
- A.liquid
- B.oily mixture
- C.emulsion
- D.vapor
- A.the recommended current and voltage rating
- B.higher current and voltage rating
- C.higher current and lower voltage rating
- D.lower current and higher voltage rating
- A.up and draw in a fresh air charge
- B.down to burn off fuel
- C.down to compress the fuel air charge
- D.up and force out the exhaust gases
- A.refrigerant boiling out of solution from the lube oil
- B.liquid refrigerant flooding the compressor and system
- C.lube oil viscosity being reduced by refrigerant dilution
- D.compressor suction pressure suddenly increasing
- A.leave the access door partially open
- B.enter from the lowest level
- C.enter from the highest level
- D.attempt to operate machinery
- A.low combustion temperature
- B.a leaking fuel nozzle check valve
- C.late fuel injection
- D.plugged oil-scraper ring hole
- A.providing the impeller with balancing holes
- B.the use of symmetrical impeller
- C.neither A nor B
- D.either A or B
- A.even if
- B.so that
- C.such that
- D.in order that
- A.faulty combustion
- B.excessive ring temperature
- C.over lubrication
- D.all of the above
- A.fuel oil
- B.cooling water
- C.starting air
- D.auxiliary blower
- A.setting tanks
- B.service tanks
- C.tanks
- D.drain tanks
- A.a micrometer
- B.a bowl
- C.a feeler gauge
- D.a wrench
- A.passing the exhaust through long head pipes
- B.diffusing exhaust vibrations through activated carbon baffles
- C.increasing the exhaust gas velocity
- D.reducing the exhaust gas velocity
- A.Closing of the solenoid valve
- B.Closing of the expansion valve
- C.An increase in the suction pressure
- D.Decreasing the suction pressure
- A.in series
- B.in parallel
- C.either A or B
- D.None of the above is tree
- A.changing filter elements would not interrupt engine operation
- B.filtering occurs twice in each pass of oil through the system
- C.clogging will not occur
- D.dropping pressure is half of that through a single filter unit
- A.the beginning of the compression stroke
- B.the beginning of the suction stroke
- C.the end of the working stroke
- D.the end of the exhaust stroke
- A.the bilges
- B.the periscope
- C.the water level
- D.the oil pressure
- A.needle valve
- B.nozzles
- C.piston
- D.spring
- A.land
- B.skirt
- C.crown
- D.plate
- A.a filter
- B.a strainer
- C.a magnetic filter
- D.a fine strainer
- A.quantity of air it takes in and retains in the cylinders during a given time period
- B.proportion of trapped air that is utilized in the combustion process
- C.thermodynamic efficiency of the engine cycle
- D.all of the above
- A.behind
- B.far from
- C.adjacent to
- D.in front of
- A.dampers
- B.filters
- C.stopper circuits
- D.separators
- A.The breaker should be closed when one synchronizing lamp is dark and the other is bright
- B.The breaker should be closed when both synchronizing lamps are bright
- C.The frequency meter should be used to determine that the incoming alternator frequency is slightly higher than the bus
- D.A portable phase sequence indicator must be used to verify the information from the lamps
- A.crankcase pressure
- B.lube oil pressure
- C.saltwater pressure
- D.exhaust temperature
- A.class A
- B.Class B
- C.Class C
- D.Class D
- A.rack position should be adjusted
- B.compensating needle valve should be opened fully compensating
- C.needle valve should be adjusted to stabilize operation
- D.speed limiting device should be adjusted
- A.on both the external and internal top edges
- B.on both the external top and bottom edges
- C.on both the external and internal bottom edges
- D.on all the four edges
- A.LL66
- B.ITC69
- C.ILO No147
- D.SOLAS 74
- A.an isochronous governor
- B.elastic engine mounts
- C.a vibration damper
- D.a cast iron bed plate with good flexible qualities
- A.A large change of viscosity occurs with a minor change in temperature
- B.No change in viscosity occurs with any change in temperature
- C.Very little change in viscosity occurs with a significant change in temperature
- D.The viscosity of the oil increases with an increase in temperature
- A.produce a scavenging effect in the combustion space
- B.equalize cylinder and exhaust manifold pressures
- C.alleviate the difference in valve size between the intake and exhaust
- D.flush out condensate that collects after each compression stroke
- A.a transfer pump
- B.a bilge pump
- C.a service pump
- D.a vacuum pump
- A.After
- B.before
- C.inside
- D.outside
- A.the chief engineer
- B.the master
- C.the bridge
- D.the company superintendent
- A.by trial and error
- B.by and large
- C.automatically
- D.very easily
- A.to increase the system efficiency by sensible heat transfer
- B.to stop the liquid from flashing
- C.to reduce the load on the compressor
- D.to remove latent heat of vaporization and the suction piping transfer
- A.high compression pressure
- B.low intake air temperature
- C.low exhaust pressure
- D.high scavenge air temperature
- A.the system is manned manually
- B.the system is situated remotely from the operator
- C.the system is controlled automatically
- D.all the above
- A.Disconnect the battery cables from the starting motor
- B.Drain the hydraulic fluid from the governor sump
- C.Block the flow of cooling air to the radiator
- D.Secure the fuel supply and block the air intake
- A.central air conditioning system
- B.high velocity system
- C.low velocity system
- D.single duct system
- A.salinity is abnormally high
- B.steam demand is too high
- C.water level is abnormally low
- D.feedwater flow is low
- A.sea cheat
- B.air receiver
- C.crankcase
- D.water box
- A.Ship security plan
- B.Company security plan
- C.Port facility security plan
- D.National security plan
- A.only by the pump as its primary function
- B.by resistance to the fluid flow through the system
- C.by the thermal input to the systems fluid
- D.solely by the charge applied by the accumulators
- A.10%
- B.15%
- C.20%
- D.5%
- A.Class "A" and class "B"
- B.Class "B" and class "C"
- C.Class "A" and class " C"
- D.Class "C", class "D", and class "E"
- A.Certificate of Inspection
- B.Station Bill
- C.Ships Articles
- D.Fire Control Plan
- A.a priming device
- B.a discharge branch
- C.a filter
- D.a suction valve
- A.the flag state
- B.the coastal state
- C.the port state
- D.the shipping company
- A.superheated
- B.saturated
- C.dense
- D.flooded
- A.a heater
- B.a pre-heater
- C.an exhaust gas boiler
- D.the coal burning boiler
- 125
-
Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and _____.
- A.fluid friction
- B.fluid turbulence
- C.component misalignment
- D.pressure surges
- A.two frequencies must be brought into phase
- B.the incoming machine accepts a small amount of load
- C.the running machine must be unload
- D.both voltages are equal
- A.have no plating joints of 90
- B.retain the lube oil as long as possible before it recirculates through the system
- C.provided drain/return lines that are no greater than 24 inches from the pump suction
- D.be provided with only a perfectly horizontal bottom
- A.yearly
- B.quarterly
- C.monthly
- D.daily
- 129
-
On top of scavenging air box is mounted a strong cast iron frame. for each cylinder known as_____.
- A.cooling jacket
- B.cylinder liner
- C.piston crown
- D.cylinder cover
- A.play a great part on
- B.run a role in
- C.plays an important part in
- D.acts as important part at
- 131
-
If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the .
- A.oil has a tendency to emulsify in the bowl
- B.purifier will act as a clarifier at the discharge ring
- C.oil will be lost through the water discharge ports
- D.oil solids will be deposited only at the intermediate top disk
- A.Loss of vessel steering
- B.Overheating of the gyrocompass
- C.Jamming of the six-way vale
- D.Jamming of the follow-up device
- A.the chief engineer
- B.the designated engineer from shipyard
- C.the designated duty officer in charge of the engineering watch
- D.the designated surveyor from classification society
- A.a restricted air intake
- B.a clogged connecting rod oil passage
- C.incorrect connecting rod alignment
- D.high cylinder firing temperatures
- A.the voltage between two points in a circuit
- B.circuit continuity
- C.current flow in a circuit
- D.total or partial circuit resistance
- A.the pump cylinder
- B.the pump cam
- C.the pump plunger
- D.the pump miler
- A.evaporation
- B.frosting
- C.condensing
- D.compressing
- A.fuel must be preheated
- B.intake air should be preheated
- C.lube oil outlet temperature should be increased 20℃ above normal
- D.none of the above
- A.excess amount of oily-water mixtures in bilges
- B.insulation of piping including exhaust pipes in engine room contaminated by oil
- C.improper operation of bilge pumping arrangements
- D.paint peering off the uptake
- A.(1) only
- B.(2) only
- C.either (1) or (2)
- D.neither (1) or (2)
- A.To permit flooding of any fuel oil storage tank on any class of ship
- B.To use it as a secondary service system
- C.To store reserve feed or potable water for extended cruises
- D.To stabilize the ship by flooding certain designed tanks with seawater
- A.increase the starting air pressure
- B.use a higher than normal cranking speed
- C.increase the fuel injection pressure
- D.use a fuel having a lower ignition temperature
- A.pyrometer
- B.bourdon gauge
- C.pneumercator
- D.manometer
- A.fuel oil
- B.cooling water
- C.steam
- D.power
- A.through bolts
- B.dividing walls
- C.sloping surfaces
- D.relative angles
- A.The safety valve escape piping should be disconnected from the valve body and a blank inserted
- B.The boiler vent valves should be opened
- C.All hand-hole/manhole covers should be tightened up as much as possible to preclude any leaks
- D.All of the above
- A.upwards / top
- B.upwards / bottom
- C.downwards / top
- D.downwards / bottom
- A.a bolt
- B.a cap
- C.a disc
- D.a nut
- A.cast
- B.put
- C.hold
- D.let out
- A.east iron is a cheap material
- B.cast iron can pollute sea water
- C.cast iron has mere corrosive than bronzes to sea water
- D.cast iron is more corrosive to sea water when it meets with bronzes
- A.35°/ 35°
- B.35°/ 30°
- C.15°/ 15°
- D.28°/ 60°
- 152
-
One of the purposes for water cooling the exhaust manifold in marine diesel engine is to _______.
- A.reduce lube oil temperature
- B.raise exhaust temperature reduce
- C.excessive heating of engine room
- D.reduce load on cooling water pump
- A.flat
- B.slat
- C.sweet
- D.acid
- A.The large-tension mooring
- B.The small-tension mooring
- C.The variable-tension mooring
- D.The constant-tension mooring
- A.having a shorter duration of opening
- B.having a longer duration of opening
- C.closing sooner
- D.opening later
- A.stopping the main engine suddenly
- B.changing the main engine running direction suddenly
- C.the sailing from the shallow water area to the deep water area
- D.the ship’s trim too much
- A.low loads necessitate frequent insulation cleaning
- B.exceeding nameplate values shortens useful life
- C.energy is wasted if full loading is not utilized
- D.power factor correction methods are load dependent
- A.change A.Cto DCcurrent
- B.change DCto A.Ccurrent
- C.neutralize a armature reaction
- D.carry current to the outside circuit
- A.seal water supply be cut off
- B.make-up water supply be cut off
- C.oil outlet valve closed or not open sufficiently
- D.the flow rate of oil is too much
- A.low lube oil temperature
- B.low lube oil pressure
- C.high exhaust temperature
- D.high cooling water pressure
