我
- A.deteriorates
- B.increases
- C.are fouled
- D.becomes better
- A.15 liters/ nautical mile
- B.30 liters/ nautical mile
- C.60 liters/ nautical mile
- D.100 liters/ nautical mile
- A.a glazed surface on the spring
- B.nicks in the protective coating
- C.a build up of sludge deposits
- D.cracks in the surface of the spring
- A.overload
- B.the odds of the load
- C.the default of parts
- D.overload and the odds of the load
- A.The agent is considered nontoxic at room temperature in low concentrations
- B.The agent is less effective than carbon dioxide
- C.Halon primarily extinguishes the fire by cooling
- D.The agent cannot be used on electrical fires because it leaves a residue
- A.hold/responsibility
- B.ask/responsibility
- C.hold/responsible
- D.require/responsible
- A.in the store room
- B.in the cylinder
- C.in the scavenge air box
- D.in the water box
- A.inoperative turbocharger
- B.inadequate fuel supply
- C.overload on one cylinder
- D.unequal load distribution
- A.Compression ratio
- B.Fuel/Air ratio
- C.Compression pressure
- D.Lube oil pressure
- A.TDC
- B.DTC
- C.BDC
- D.DBC
- 11
-
To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the .
- A.lube oil temperature at the cooler outlet
- B.lube oil strainer magnets bearing
- C.lube oil temperature
- D.lube oil pressure to the bearing
- A.improper adjustment of the bypass valve
- B.a dribble in the fuel injection nozzle
- C.insufficient leak-off through injection nozzle packing
- D.a malfunctioning injection nozzle
- A.achromatism or thin gray
- B.thin white
- C.sky-blue
- D.black
- A.sealed
- B.cracked
- C.shape changed
- D.deformed
- A.a mooring winch
- B.a hoisting winch
- C.a slewing winch
- D.a luffing winch
- A.release
- B.absorb
- C.develop
- D.regenerate
- A.shunt
- B.high-resistance coil in the armature circuit
- C.low-resistance coil in the armature circuit
- D.shunt and a coil of high resistance
- A.throttling the pressure line
- B.changing the speed of the rotor
- C.either A or B
- D.None of the above is tree
- A.Holding the valve open for a long period
- B.Increasing the starting air pressure used
- C.Opening the stating air valve quickly
- D.Reducing the starting air valve size
- A.filled
- B.evacuated
- C.compressed
- D.charged
- A.of crosshead type
- B.of trunk piston type
- C.of low speed type
- D.all the above
- A.excessive piston to liner clearance
- B.excessive dirt beneath the piston crown that reduces heat transfer
- C.faulty nozzle spray
- D.all of the above
- A.is used to be
- B.was used to be
- C.used to be
- D.was used to
- A.combined as part of the salt water feed heater
- B.the open area above the brine levels in the first and second stages
- C.combined as part of the distillate cooler
- D.another term used to describe the vapor feed heater
- A.hydraulic pumps
- B.valves
- C.hydraulic cylinders
- D.hydraulic motors
- A.has begun
- B.takes place
- C.occurs
- D.happens
- A.starting air pressure
- B.scavenge air pressure
- C.over-speed trip
- D.banjo oiler line
- A.(1) only
- B.(2) only
- C.both (1) and (2)
- D.neither (1) nor (2)
- A.increase the refrigerating effect, by decreasing the amount of flash gas
- B.allow the refrigerant to enter the throttling device in a saturated condition
- C.increase the refrigerating effect by increasing the amount of flash gas
- D.minimize the temperature drop of the liquid as it passes through the solenoid valve to the outlet side
- A.the cylinder
- B.the crankshaft
- C.the piston
- D.the cross-head
- A.the air start valve timing gears and rods
- B.a cylinder check valve
- C.individual cams and valve gear
- D.an air manifold poppet valve
- A.The piston rod
- B.The push rod
- C.The sounding rod
- D.The connecting rod
- 33
-
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by _____.
- A.the four-way control valve failing to shift
- B.the bleeder valve sticking in the open position
- C.cold hydraulic fluid
- D.a clogged air vent falter on the oil reservoir
- A.Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiation
- B.Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas
- C.Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gas
- D.This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
- A.fuel injectors
- B.exhaust valves
- C.intake valves
- D.all of the above
- A.accumulator spring compressor
- B.balance piston
- C.compensating needle valve
- D.proportional piston
- A.Engine room ventilation should be started
- B.Main engines should be secured
- C.The fire pump should be started
- D.The fixed CO2 system should be activated
- A.loss of power
- B.misfiring
- C.low fuel oil pressure
- D.All of the above
- A.reduce current pulsations
- B.reduce brush chatter
- C.prevent uneven commutator wear
- D.allow greater power generation
- A.the bow
- B.the stem
- C.the port side
- D.the starboard side
- A.20
- B.40
- C.60
- D.80
- A.made and noted as required by the duty engineer
- B.reported to chief engineer immediately after being made by duty engineer
- C.never made before getting permission from chief engineer
- D.made as required but not logged
- A.Any one component can be eliminated to extinguish a fire
- B.Any two components must be eliminated to properly extinguish a fire
- C.Any three components must be eliminated to properly extinguish a fire
- D.Ali four components must be eliminated to extinguish any fire
- A.know where the lifejacket is stowed
- B.know where the life-saving craft are fitted on the ship
- C.know the escape routes
- D.Good professional knowledge
- A.high exhaust temperature
- B.low exhaust temperature
- C.fuel knock in each cylinder
- D.mechanical knock in each cylinder
- A.suction
- B.compression
- C.expansion
- D.exhaust
- A.Viscosity
- B.Sulfur content
- C.Pour point
- D.Cetane number
- A.bolts welded into the cylinder head
- B.bolts welded into the cylinder frames
- C.studs screwed into the cylinder head
- D.studs screwed into the cylinder frames
- A.can not be ignited by a spark unless the vapor is in a confined space
- B.are nontoxic in all concentrations
- C.can not be ignited by a spark unless they are at their auto-ignition temperature
- D.are heavier than air
- A.supply clean air to the measuring compartment of the units for more accuracy
- B.generaate the pressure required for the extraction of the oil mist from the
- C.generate the pressure required for the extraction of the oil mist from the crankcase
- D.supply clean air to the measuring track of the units for more accuracy
- A.BRC
- B.MCC
- C.AUT-0
- D.AUT-1
- A.increase the flow of the cooling water through the condenser
- B.adjust the high pressure cutout to maintain the desired pressure
- C.open the hot gas bypass temporarily to reduce capacity
- D.purge non-condensable gases to reduce the excess pressure
- A.I only
- B.II only
- C.either I or II
- D.neither I or II
- A.Dram
- B.Salient pole
- C.Squirrel-cage
- D.Wound-rotor
- A.14 percent
- B.15 percent
- C.16 percent
- D.17 percent
- A.excessive lube oil consumption
- B.lower than normal lube oil temperature
- C.higher than normal exhaust back pressure
- D.excessive crankshaft end play
- A.paint peeling off the uptake
- B.no operation procedures for the oil separators
- C.one of ship’s certificates required is invalid
- D.damaged sanitary pump
- A.worn cylinder liner
- B.faulty cylinder relief valve
- C.excessive lube oil pressure
- D.excessive scavenge air pressure
- 59
-
With reference to a rotary vane steering gear system, which one of the following statements is true?
- A.The three moving vanes and the three fixed vanes form. three pressure chambers
- B.The three moving vanes and the three fixed vanes form. six pressure chambers
- C.The three moving vanes and the three fixed vanes form. nine pressure chambers
- D.The three moving vanes and the three fixed vanes form. twelve pressure chambers
- A.much
- B.more
- C.most
- D.less
- A.operational
- B.open
- C.closed securely
- D.at middle position
- A.boiling and cavitations; low temperature
- B.boiling and cavitations; pressurized
- C.leaking and boiling; low temperature
- D.leaking and boiling; pressurized
- A.density
- B.bore
- C.weight
- D.material
- A.Two derricks
- B.A derrick and a crane
- C.Two cranes
- D.A crane and a winch
- A.expansion valve to overfeed
- B.compressor to knock
- C.water regulating valve to fail
- D.crankcase drains to plug
- A.valve loop
- B.valve uniflow
- C.valve overlap
- D.valve grinding
- A.dead band action
- B.neutral zone action
- C.range
- D.on-off action
- A.corrosive deterioration of a bearing
- B.inadequate air filtration
- C.excessive ring and liner wear
- D.excessive cooling of lubricating oil
- A.a reciprocating pump
- B.a vane pump
- C.a centrifugal pump
- D.a triple screw pump
- A.the elimination of valve wear
- B.improved atomization
- C.a decrease in cylinder blow-by
- D.an increase in cylinder blow-by
- A.One man report the fire, and the other two men fight the fire
- B.One man report the fire, one man fight the fire, and one man evacuate and secure the area
- C.One man report the fire, one man fight the fire, and one man act as a safety observer
- D.All three men fight the fire and report it immediately after it is extinguished
- A.too much cooling water going through the condenser
- B.not enough refrigerant in the system
- C.a leak in the evaporator coils
- D.no enough cooling water going through the condenser
- A.overspeed trip
- B.audible/visual alarm
- C.the ships/boats general alarm
- D.reserve oil storage tank
- A.the suction and discharge valves
- B.tools and equipment served by compressed air
- C.air line reducing valves
- D.all of the above
- A.increase engine power
- B.increase engine load
- C.decrease engine power
- D.improve fuel economy
- A.kinetic/pressure
- B.kinetic/essential
- C.pressure/kinetic
- D.pressure/height
- A.cylinder liner
- B.coupling flange
- C.cylinder cover
- D.piston crown
- A.Voyage repairs
- B.Routine docking
- C.Damage repairs
- D.Conversion
- A.alternation of side thrust
- B.a breakdown of the lube oil film on the cylinder wall
- C.worn piston boss piston pin bearings
- D.fluctuating gas pressure in the combustion space
- A.abandon ship
- B.dismissal from drills
- C.fire and emergency
- D.man overboard
- A.tie rod
- B.thrust block
- C.bedplate of main engine
- D.frame. of main engine
- A.The solenoid valves directs high pressure gas to the valve lifting device raising the suction valve off its seat and causing one specific cylinder to become unloaded
- B.The solenoid valves directs high pressure gas to the underside of the unloading piston, causing it to rise and allowing the recirculating ports to be opened
- C.When the solenoid valve becomes energized, the valve ports become closed, allowing discharge pressure to build up above the piston, shifting it and causing it to unload
- D.The solenoid valve allows the refrigerant to pass from the suction chamber to the top of the unloader piston, causing the piston to lift and unload the cylinder
- A.Combustion does not begin until the piston starts down on the power stroke
- B.Maximum combustion pressure is reached before TDC
- C.Turbulence in the cylinder causes a delay in ignition
- D.Maximum cylinder firing pressure is not developed until the piston passes TDC
- A.the viscosity index
- B.the fuel oil contents
- C.the starting speed
- D.the reading at the rack
- A.increase the liner area covered by the oil film
- B.maintain an oil film on the lower liner where scuffing is prevalent
- C.keep excess oil away from intake and exhaust ports
- D.help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
- A.Direct linkage between the ball-head and fuel rack
- B.A servomotor
- C.A compensating device
- D.Flyweights
- A.At the top
- B.At the bottom
- C.In the top
- D.In the bottom
- A.fuel oil
- B.cooling water
- C.air compressor
- D.auxiliary blower
- A.Copper
- B.Copper and carbon
- C.Carbon
- D.Bronze
- A.generate its own electrical power
- B.transform. electrical energy into mechanical energy
- C.increase or decrease circuit voltage as required
- D.convert AC current to DC current
- A.only oil tankers
- B.only passenger ships
- C.only containers
- D.all ships
- A.Reverse current protection
- B.Reverse power protection
- C.Synchronising device
- D.Frequency meter
- A.an oil seal
- B.removing heat
- C.a gas seal
- D.cooling the piston
- A.settling in a fuel tank
- B.testing in a laboratory centrifuge
- C.burning in a calorimeter
- D.testing in a closed cup
- A.damage to the un-loader operating diaphragm
- B.an increase in current flow to the motor
- C.high pressure in the receiver and filter
- D.an excessive consumption of crankcase oil
- 96
-
The ability of an oil to separate cleanly from an oil and water mixture is referred to as its _____.
- A.precipitation number
- B.neutralization number
- C.pour point
- D.demulsibility
- 97
-
The plunger is machined to very fine tolerances, as is the matched ______ in which it reciprocates.
- A.barrel
- B.ram
- C.piston
- D.rod
- A.acidity of the oil
- B.pour point of the oil
- C.flash point of the oil
- D.viscosity of the oil
- A.after TDC
- B.before TDC
- C.after BDC
- D.before BDC
- A.check hydraulic oil levels every hour
- B.check the rams for overheating
- C.check for excessive oil leakage from rams
- D.drain water from telemotor cylinders each watch
- A.be increased
- B.be decreased
- C.remain constant
- D.either be increased or remain constant
- A.sediment contamination
- B.fuel filter clogging
- C.moisture formation
- D.inadequate transfer pump suction head
- A.the toping light
- B.the board brake
- C.the fail-safe
- D.the barrel shaft
- A.pressed/to
- B.pressurized/with
- C.pushed/in
- D.compressed/to
- A.lifejacket
- B.SCBA
- C.lifeboat
- D.torch
- A.sludge
- B.water
- C.micro-organism growth
- D.all of the above
- A.cool the expansion valve
- B.prevent refrigerant superheating
- C.condense the refrigerant gas
- D.prevent motor overheating
- A.Ours
- B.Ours ship
- C.Our’s ship
- D.Our’s
- A.throw
- B.crankshaft
- C.crankpin
- D.crosshead
- A.class A
- B.class B
- C.class C
- D.class D
- A.can be reset to energize the circuit
- B.should open the circuit when overloaded
- C.will burn out when an over current flow develops
- D.All of the above
- A.cutout
- B.pressure controller
- C.controller switch
- D.cutout switch
- A.TDC
- B.DTC
- C.BDC
- D.BCD
- 114
-
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting _____.
- A.a shortened ignition delay period
- B.a lean fuel/air mixture
- C.excess fuel in the combustion chamber
- D.rapid vaporization of injected fuel droplets
- A.check cylinder lubrication
- B.connect the pressure indicator pressure
- C.test cylinder heads
- D.connect the exhaust gas pyrometers
- A.starting air pressure
- B.scavenge air pressure
- C.over-speed trip
- D.banjo oiler line
- A.leaky pipe
- B.opened inlet valve
- C.too much water in tank
- D.None of the above
- A.displacement
- B.weight
- C.power
- D.capacity
- A.MIP
- B.MCR
- C.MEP
- D.BHP
- A.4
- B.3
- C.2
- D.1
- A.setting point
- B.ash
- C.sulfur content
- D.carbon residues
- A.a shortage of refrigerant in the system
- B.air in the system
- C.an accumulation of liquid refrigerant in the crankcase
- D.a shortage of oil in the crankcase
- A.stop bleeding
- B.open airway
- C.mouth-to-mouth respiration
- D.call for help
- A.single
- B.II
- C.III
- D.multiple
- A.should be scraped
- B.should be derusted
- C.should be drilled out
- D.to be brushed off
- A.Too much refrigerant
- B.Too little refrigerant
- C.Refrigerant is ran out
- D.Running is over
- A.high firing pressure
- B.overload of that particular cylinder
- C.smoky exhaust
- D.cooling water temperature rise
- A.inefficiency
- B.oiliness
- C.detergency
- D.purity
- A.to raise water level
- B.only while making steam
- C.to remove scum
- D.when fire are secured
- A.recirculating
- B.total loss
- C.cooling
- D.refrigeration
- A.the pump going to full stroke
- B.closing of the six-way valve
- C.driving the rams up against the stops
- D.a corresponding slowing or increasing of the pumped flow rate
- A.increase discharge pressure
- B.decrease pump capacity
- C.decrease pump cavitation
- D.decrease reaction ring clearance
- A.hold the valves open
- B.keep the valves off their seats until the exhaust stroke is completed
- C.close the valves
- D.open inlet valves when the air injection cycle begins
- A.at TDC
- B.before TDC
- C.after TDC
- D.during air starting
- A.is usual
- B.is not usual
- C.is necessary
- D.is not impossible
- A.compressor
- B.condenser
- C.throttle valve
- D.evaporator
- A.a magnetic operating coil
- B.normally open line contacts
- C.thermal-overload protection
- D.a momentary-contact start button
- 138
-
The evaporating pressure in R22 vapor compression refrigeration plant should be _____ atmospheric.
- A.below
- B.above
- C.equal to
- D.much larger than
- A.the purifier driving gears are lubricated by the reclaimed
- B.oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling water
- C.sealing water must never be supplied until after oil is fed to the unit
- D.deterioration of the bowl ring gasket will cause the purifier to lose its water seal
- A.turbine
- B.screw
- C.vane
- D.ejector
- A.is made to circulate out of the system
- B.is made to circulate within the system
- C.is made circulate within the system
- D.is made circulate out of the system
- A.dog clutch
- B.Pair of gears
- C.worm gear
- D.turning gear
- A.the harbor bureau
- B.the government of the flag state
- C.the ship classification society
- D.ship company
- A.registry
- B.ship hull
- C.nationality
- D.replacing machineries and electric devices
- A.the third engineer
- B.the PSCO
- C.the surveyor
- D.the chief engineer
- A.gravity
- B.diameter
- C.circumference
- D.cylinder
- A.has to be cooled
- B.has heated
- C.has preheated
- D.has to be preheated
- A.in which
- B.on which
- C.to which
- D.by which
- A.fire fighting pump
- B.the steering gear
- C.life boat engine
- D.the main engine
- A.must replace
- B.must to be equipped
- C.has to be repaired
- D.have to be renewed
- A.(1) only
- B.(1)and (2)
- C.(1), (2) and (3)
- D.(2)and (3)
- A.the master
- B.the chief engineer
- C.the owner of the ship
- D.the manager who assumes the responsibility for operation of the ship
- A.Bad combustion of the fuel
- B.Bad atomization of the fuel
- C.Liquid contaminants
- D.Solid contaminants
- A.Carbon dioxide
- B.Carbon monoxide
- C.Carbon trioxide
- D.Hydrogen sulfide
- A.fuel valve
- B.the starting air valve
- C.the sea chest
- D.the main sea pump inlet valve
- A.BRC
- B.MCC
- C.AUT-0
- D.AUT-1
- A.a level controller
- B.a temperature switch
- C.a pressure switch
- D.a floating ball
- A.a water cooled condenser
- B.a slop tank
- C.a expansion tank
- D.a centrifugal pump
- A.to discharge
- B.to be discharged
- C.discharging
- D.being discharged
- A.temperature
- B.pressure
- C.acid value
- D.viscosity
