海船船员考试轮机部三管轮模拟题7(轮机英语)

Defective air cooler in a diesel engine will lead to .

While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should _____.

The oil mist detectors continuously_____ the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity measuring track.

A fire, occurring in the windings, of an overloaded electrical motor, is considered a _____.

Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be _____ to maintain ambient conditions within the comfort zone by air conditioning.

Engage the flywheel with the _____.

A lower thermostatic temperature setting will provide a desired degree of comfort in a room where _____.

The design of for a flash type evaporator is of critical importance because it must provide an optimum feedwater spray pattern that facilitates the flashing process, and it must also maintain a pressure differential between successive stages.

After stopping oily water separator, sea water should be permitted for ___ minutes, ____ should be closed after stopping pump to reduce oxidation corrosion of inner wall.

While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?

Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and _____ in size.

The two strokes of a two-stroke/cycle diesel engine are _________.

In a fixed displacement axial piston hydraulic motor, the speed is varied by .

In order to find out which lifeboat you are assigned, you should look at the _____.

The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the _____ of merchant ships.

If you find an extremely large refrigerant leak while using a halide torch, your flame will ___.

If the gas pressure behind the ring is built up too slowly, and thereby exerts an inadequate outward pressureIn such a case, the combustion gas can penetrate between the liner and ring, and violently force the ring inwards, in the grooveWhat result will this type of sudden "shock" loading eventually lead to?

To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the _____.

Which of the following equipment can not be used for the waste heat recovery of the M/E to further improve its thermal efficiency?

A class "C" fire is burning _____.

The gauge pressure inside a container is -0.5kg/cm2, then what is the absolute pressure exerted to the inside surface of thin container?

Which of the listed items will stop a motor due to a reduction in voltage and restart it when the voltage is restored to normal?

Aluminum pistons have _____ coefficient of thermal expansion compared with those of cast iron.

In the refrigeration compressor the temperature of the vapor is _____ by compression.

A common rail engine has only one or two high pressure pumps in operation at the same____time, and the injection into each cylinder .

Check value is used to control ____.

One function provided by a hydraulic accumulator is to .

One of the major features of the STCW95 is the adoption of a new STCW Code, to which many have been transferred.

To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?

Additives _____ protective layers on metal surfaces guarding them against corrosion.

Which of the problems listed could be indicated if a sight glass in the refrigerant liquid line is full of bubbles? .

In a single acting, two-stroke/cycle, diesel generator engine, the power impulse in an individual cylinder occurs ____________.

With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing _____.

When starting a centrifugal pump, the discharge valve should be ____.

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is ___ .

Air trapped in the hydraulic fluid of a steering system may be indicated by .

In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the _____.

To start the ejection process the oil feed to the centrifuge is first shut off and the oil remaining in the bowl removed by admitting _____.

The approval period for a shipboard oil pollution emergency plan expires after _____.

The amount of lubricating oil in the drain tank should be checked by _____.

When air becomes trapped in the hydraulic fluid of a steering system, the _____.

Which of the equipment listed is most effective in processing bilge slops for overboard discharge?

The tendency of a flammable liquid to vaporize is indicated by its _____.

In the ISM code, “company” doesnt mean .

_____ are formed by abrasive particles entering the bearing and scoring the shaft.

UMS are mainly unattended overnight and during this time ____ should have control of the main engine.

A connecting rod in a four-stroke/cycle diesel engine is subject to_________.

A propeller, in order to operate efficiently, must rotate at a relatively _____ speed.

Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?

The longer the ignition delay period occurs in a diesel engine, the _____.

According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?

Which of the following would cause a diesel to have black smoke?

The emulsion of the oil is mainly caused by _____.

When the vessel entering the dock, the first work that engineer should contact with the shipyard ____.

The main source of fuel injection system malfunctions is _____.

A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is _____.

The term "load on top" is used on many crude oil carriers, is to provide a method for _____.

The frequency of an AC generator is controlled by the _____.

Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?

In general, _____ is suitable for delivering small quantifies at high pressure.

If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?

The high pressure in fuel injection system of the diesel engine is produced by the _____.

The gudgeon pin is carried in _____ in the piston skirt.

The injector pump is operated by a cam which drives ______ up and down.

Two-stroke engine turbocharging is achieved by two distinct methods, _____ termed the constant pressure and the pulse system.

The pressure of a liquid leaving the pump can be referred to as the _____.

The pumps press oil into the cross-head bearing gap when the load on the shell is at its lowestWhat is the meaning of “its” in the sentence above?

The oil pressure and flow from each bearings can be checked when .

Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems?

In motor-ships, _____, after passing through main and motion bearings and oil cooled pistons, etcis either retained in the bedplate.

Engines for lifeboats are required to have sufficient fuel to operate for how many hours?

A separate piston cooling system is used to limit any contamination _____ piston cooling glands_____ the piston cooling system only.

Your assigned emergency stations aboard your vessel can be found on the ships _____.

How do you treat someone suffering from electrical shock after you secure the source? .

In the shafting management ____ should be paid more attentionIif the while metal tailshaft bearing is dripping oilIIif some area become blue during the runningIIIthe deformation of crankshaft.

The fire-fighting practical training should take place in spaces which provide truly realistic training conditions, and whenever possible and practical should be carried out in _____.

_____ in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.

Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?

To determine the main bearing clearance of a propulsion diesel engine, you should measure the main bearing shell using a ball anvil outside micrometer and measure the crankshaft journal using a/an ________.

In some modern large diesel engines, which of the following is used as the support for the main bearings?

A high temperature alarm or _____ which will melt is used to guard against the explosion of compressor air pipelines.

You may improve a vessels stability by _____.

What is the function of an engine’s stationary parts?

Prior to running the hydraulic pump, examine the system carefully and ensure that the lever of control valves is in _____ position.

The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known as _____.

Soot blowers should be used in proper sequence so that_____.

A refrigeration unit will tend to short cycle when operating _____.

The monitoring function may serve all of the following purposes except .

They understand the _____ of automatic sludge discharging of the purifierBut they are not good in practice.

Hydraulic control check value is generally used to ___ in the marine hydraulic mechanism.

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

In a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is free to rise into the oil collecting spaceWhats the meaning of "it" in the sentence above?

When the order _____ is received from the bridge, the main air stop valve in the starting air line should be shut.

The diesel engine valve subjected to most severe conditions of service is the _____.

Diesel engine injection lag is caused by_________.

The rate of heat transfer from a hot region to a cold region is affected most by the _____.

The lower section of a piston is called the ______.

To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should _______.

______ means the level for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident.

By this time tomorrow, the ship ______ its repair work in the engine room.

Main propulsion engine lube oil sumps should be constructed _____.

Scale and dirt accumulation in the waterside of a lube oil cooler will be indicated by a gradual increase in the lube oil

The meat box temperature control circuit, as used in ship service refrigeration system, is an example of __________.

Who will be responsible for ensuring that a ship maintains a standard at least equivalent to that specified in international conventions?

A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of ____.

Tell the engineer on duty to keep close watch over the machine ______ temperature is sometimes a bit too high.

In a vacuum distillation system, the case is the higher the pressure, _____.

The conventions under which the port state control inspection is carried out include all the following except ______.

In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the ____________.

Cooling the intake air supplied to a diesel engine will _____.

Keep compartment _____ as the gas given off can be dangerous.

Changes in direction or speed of the main propulsion units shall be recorded, ______ an Administration has determined that the size or characteristics of a particular ship make such recording impracticable.

If the engine can be started and maneuvered on high viscosity fuel, the ______ of the fuel reaching the injectors should be raised to such a point that the viscosity is less than the required value, i.e27cSt.

Lubricating oil used in a diesel engine serves to _________.

Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid _____ pressure.

Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at .

Which of the following terms is used to identify the pressure of the liquid entering a pump?

The Company should ensure that the ship’s personnel are able to _____ effectively in the execution of their duties related to the SMS.

When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer mating in the _____.

Faulty operation of diesel engine fuel injection nozzles can be directly caused by _________.

Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h.pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?

Continuous surging of turbocharger can be caused by .①crash stop of engine; ②increased back pressure after T.Ch.; ③fouled or damaged turbine nozzle ring.

The exhaust system for a turbocharged diesel engine functions to ______.

The word "discharge" as used in Pollution Prevention Regulations applies to oil _____.

The difference between a supercharged engine and an un-supercharged engine is that ______.

The International Oil Pollution Prevention Certificate is valid for a period of _____.

_____ are generally formed in the frame. of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.

The switchboards are those in which all the live parts are installed behind the panels and only the operating handles and instruments are on the front.

Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the _____.

Which of the following operating conditions can occur when shims are removed from the joint between the foot of a marine type diesel engine connecting rod and the bearing box?

If an oil spill occurs on deck, you should _____.

For a fire to begin there must be present a combustible material, oxygen or air to ______ combustion, and a source of heat at a temperature high enough to start combustion.

An increased pressure differential between the inlet and outlet of a strainer usually indicates the strainer is _____.

In describing engine operation, what does the term “cycle” mean?

Water is a very effective fire extinguishing agent because it .

Which of the following would not be burnt in an incinerator on board?

When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?

Oil Record Book Part I shall be provided to _____.

The piston crown employs the usual jet-shaker principle with an arrangement of cooling bores in the crown so that the surface temperatures of the crown are moderate with a very even distribution.

In a _____ engine the charge of air in the cylinder before compression commences is above atmospheric pressure.

In order to maintain a constant outlet water temperature of 80-85℃ from the engine, a three-way valve is installed .

Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should_____.

The heat generated by a fire will be transferred through a bulkhead or dock, as a result of _____.

The common rail engines show great advantages in combustion especially______ .

The ratio of the brake horsepower to the indicate of a diesel engine is its ________.

The term "pour point" is defined as the lowest temperature at which lubricating oils will flow _____.

On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by _____.

According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?

Which of the terms listed below represents the operational speed at which excessive engine vibration is created?

The amount of heat released by steam when it changes to water at the same temperature is called_____.

Oil Pollution Regulations require any transfer or discharge of oil or oily mixtures to be recorded in the _________.

The cubic inch(or liter) displacement of a cylinder is determined by the diameter of the piston and the _______.

Immediately after abandoning a vessel, lookouts should be posted aboard liferafts to look for .

A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct _____.

If there were a fire in the bunker tanks, you would .

Worm geared automatic mooring winches are ____ as the multi-start feature reduces the advantage of worm gear i.ethe high gear radio.

All items such as steam pipes, exhaust pipes and fittings which, because of their location and operating temperature, present a hazard should be adequately laggedThat means the items should .

Which of the following actions should be taken if during a routine maintenance inspection of a centrifugal pump, localized scoring on a pump shaft sleeve is detected? .

The _____ discharge a nearly constant amount of liquid regardless of pressure.

Which of the following pumps belongs to centrifugal pump?