海船船员考试轮机部三管轮模拟题1(轮机英语)

The inner part of the condenser should be cleaned with _____.

The purpose of an air compressor unloading device is to _____.

Governors are equipped with motors for synchronizing, load sharing and frequency control.

Thermostatic expansion valves can be adjusted for _____.

Which of the listed characteristics of lube oil are the most important to the engineer from an operational standpoint?

Deck machinery, which is also known as hull machinery, includes all power driven equipment located ______ the machinery spaces that is ______ with the main propulsion plant.

A lube oil sample taken from the main engine lube oil system has dark yellow opaque colorThis is the result of .

Each cylinder liner on the marine medium speed engines _____.

The space between cylinder liner and jacket is called _____.

The crankshaft deflection is at first to be _____ before and after repair.

The SOLAS convention about “passenger ship and dried food ship damage control” prescribes that the engine room emergency bilge water suction should connect with ____.

To reduce the weight of the reciprocating parts, pistons of high-speed engines are made considerably shorterThis results in __________.

The _____ of an oil refers to its ability to mix with water and then release the water in a centrifuge.

Large pipes or down-comers are fitted between the steam drum and _____ to ensure good natural circulation of water.

______, remedies must be taken to stop it as early as possible.

Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by _____.

Valves in the cylinder head of a diesel engine are opened by the direct action of the ____.

Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?

Rudder motion is prevented from exceeding the movement of the steering wheel by the .

In the Oil Record Book, a comprehensive list of operational items are grouped into operational sectionsEach section is codified by a/an _____.

Please give us your quotations ______ you receive the additional repair list.

Between the steam dram and the smaller water dram below, large numbers of smaller diameter _____ tubes are fitted.

Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?

These acid residues must be prevented from entering the crankcase, otherwise the lube oil would be .

Enhanced procedures concerning the exercise of _____ have been developed to allow intervention in the ease of deficiencies deemed to pose a danger to persons, property or the environment.

In a diesel engine jacket water cooler, with seawater cooling the fresh water, the ________.

Moisture should be kept out of an R-12 system because it tends to cause _____.

Turbocharging of marine diesel engine is achieved by two distinct methods, _____ termed the constant pressure and the pulse system.

The temperature of the refrigerant in the evaporator coil depends mostly upon the _____.

Which pump installation would require an external source of sealing water?

In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with________.

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve _____.

Although lube oils used in the main lubricating service systems should have a relatively high flash point to avoid ignition, they can create smoke and fire hazards when they _____.

The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the ______.

_____ is used for washing and drinking.

Air in the fuel can cause____________.

The cylinder is fitted with internal liner so that a water space is left _____ the liner and the outer wall.

One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the ___________.

If a diesel engine runs roughly, which of the systems listed is most likely to be at fault?

A three-way thermostatic control valve regulates the diesel engine cooling water temperature by passing a portion of the water _____.

In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder _____ and the gases exhaust _____, there being an adequate overlap between the inlet opening and the exhaust closing.

If the electric motor driving an air compressor fails to start, the cause may be a _____.

During inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the PSCO? .

The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of _____.

In some type of two-stroke engines, besides some small holes for , starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the .

The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the _____.

Which of the following is false? .

If plastic film insulation becomes damaged in air conditioning system, _____ may form. within the film.

A positive displacement pump is that where the volume of the pump chamber is alternately increased to _____ and then decreased to _____.

The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, is called the.

Which of the following hydraulic systems is not one of the three sub-division of the Hydraulic drive system?

Top piston rings are plasma coatedIt gives added safety for the of new lines.

The objectives of the ISM Code are to ensure _____.

According to the regulation of the voyage trial on new ship, ____ is one of the trial items of the UMS ship bridge control.

In an air conditioning system, moisture is removed from the air by________.

According to Maritime Labour Convention, 2006, the minimum age at the time of the initial entry into force of this Convention is 16 yearsNight work of seafarers under the age of _____shall be prohibited.

The unit of electrical power is the _____.

The cooling of the piston is carried out by circulating _____ across the underside of the crown and inside the ring belt or through specially shaped passages.

An additive used to improve the ability of a lube oil to reduce friction is known as a/an _____.

If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken? .

Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?

The____ is a series of trials done at sea to determine whether the ship has met the specifications of design, modification, or repair.

A ship can request completion of a ____ when the ship is at a higher security level than the port facility or another ship it is interfacing with.

The major cause of fuel pump and injection system problems is _________.

When oily water separator is operating, which measure ____ is wrong.

The amount of fuel delivered by a unit injector is controlled by the _____.

Most conducting materials such as copper, aluminum, iron, nickel, and tungsten _____.

The cylinder cover is not provided with _____.

For an ordinary four-stroke engine the inlet valves open _____.

White smoke issuing from the exhaust of an auxiliary diesel engine valve opening ____.

The most common source of excitation for synchronous motors is a/an _____.

Which of the listed conditions will cause the feed water that has not flashed to vapor in the first-stage of a flash evaporator, to flow into the second-stage?

If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a _____.

Before starting an engine by air, the engine must .

What occurs in the combustion space of a diesel engine cylinder shortly after ignition and before the piston reaches TDC?

With a purely resistance load the voltage and current are in phase, giving a power factor of _____.

UMS stands for_____.

The air filter is fixed in the ____ of an air compressor.

_____ pistons have low inertia and high coefficient of thermal expansion.

The MARPOL Convention is the main international convention .

When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will _____.

Which of the following items is necessary for all waste heat boiler installations, regardless of design or manufacturer? .

To meet the market requirements, a marine diesel engine should not be of .

The two most common gases used in pneumatic system are ________.

The exhaust valve opens before bottom dead center in a four stroke engine to______Iallow for blow down IIReduce pumping losses

If a centrifugal pump were continually operated with the discharge valve closed, the _____.

Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?

Combustion knock can occur in the cylinders of a diesel engine under any condition permitting ______.

A knocking sound from one cylinder of an operating air compressor indicates _____.

Winch gears must be maintained in proper alignment to prevent ______.

The fire of burning plastics is classified as ____ fire.

Before marine sewage treatment plant works ____ should be filled with fresh water.

For Vee-form. engines, _____ is shaped to given two slopping surface on which _____ are placed at the correct relative angle to each other.

In which of the listed hydraulic systems will the installation of an oil cooler be necessary?

When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its .

All of the following operating characteristics are listed on the name- plates of motors used aboard ship except the .

_____ is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.

I am afraid you can’t dismantle the equipment in that way ______.

The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the _____ through which oil is transmitted up the rod to lubricate the small end.

When we say that two objects have relative motion, we mean _____.

Additional heat extraction from the exhaust gases can be effected by adding an _____ section to the unit in plants.

Which of the following nondestructive testing methods can be used to detect a suspected subsurface defect in a tail-shaft liner?

Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent _____.

_____ are used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space.

In a vacuum boiling evaporator, the fresh water generated is pumped out by _____.

The over-speed trip installed on most diesel engine will stop the engine by shutting off the _______.

_____ system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.

Which pump is the self-priming pump?

Which of the following devices are protected from being motorized by a reverse-power relay?

The primary task of the compressed air system is to deliver the starting air necessary for _____.

The slippers run ______ in the crosshead guides as the piston and rod are ______ and prevent the top of the connecting rod from moving sideways.

When an engine is starting and has got a sufficiently high speed, say about 20 rpm, .

If a used lube oil analysis indicates an excessive chromate content, this means .

Besides heat, fuel, and oxygen, which of the following is necessary for a fire to exist?

The arrangement and shape of the cams on a diesel engine camshaft directly control which of the listed groups of operating conditions?

When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected? .

Safety is dependent on orderliness and cleanlinessOrder may be maintained by .

Switchboards may be of the dead-front type in which all live parts are installed behind _____ and only the operation handles and instruments are on the front.

If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of _____.

If a heavy sea strikes the rudder, the shock is transmitted through _____ to the rams, this cause a sudden increase in oil pressure in one of the cylinders.

The ignition quality of a diesel fuel oil is indicated by the ________.

Early fuel injection timing is indicated by the cylinder pressure being ________.

The starting air entering the cylinder begins when the piston .

Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by__________.

The discharge rate or capacity of a centrifugal pump will vary directly as the _____.

It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are _____ before the pump driving motor can be started.

Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance?

During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?

During working of an air compressor, _____ should be drained .

In a four-stroke engines the camshaft rotates at _____.

Which of the listed devices would be installed at a control system air pressure reducing station?

In addition to lubricating, cylinder oil assists in forming a gas seal and contains _____ which clean the cylinder liner.

Which one of the following is not true according to the passage?

A centrifugal impeller consists of a number of vanes curving ____ from the direction of rotation.

The difference between the starboard and port drafts caused by a transverse shift in weight is _____.

With reference to a two ram actuating mechanism, which one of the following statement is false?

A distance piece, known as a _____ may be interposed between the rod and the bearing housing.

The abbreviation "GM" is used to represent the _____.

Hot gas bypass is one of the methods used to _________.

If a compressor runs continuously, the cause might be a .

The device used for low-pressure control and high-pressure cutout on a compressor is called _____.

Oxygen corrosion in auxiliary boilers is prevented by treating the boiler feed tank with either sodium _____.

Injectors on modern engines are cooled by a combination of the intensive bore cooling in the cylinder by a combination of the intensive bore pockets and by the fuel which is re-circulated through the injector when the follower is on the ______ of the cam or when the engine is stopped.

Which of the following problems could cause air to blow out through the inlet air filter of a running compressor? .

Some _____ lying in the starting air lines will give rise to corrosion and can cause water hammer.

A screw pump belongs to _____ according to its working principle.

Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?

A refrigerant boils and vaporizes in the _____ in a compression refrigeration system.

When a diesel engine compression pressure is checked, the indicator is connected to the ____.

Burning diesel oil should be treated as which class of fire?

A fire involving trash and paper waste would be classified as a _____.

The over-speed trip device installed in some diesel engines is automatically actuated by__________.

In the voyage, when carrying out abandon ship drill ____ should be test every time.

A fire may be spread by which of the following means?

Simplex tailshaft seal equipment’s working condition is terribleThe main cause is ____.

The humidifier’s valve of air-conditioner should be ____, when the temperature is 5~8°C in the winter.

An indication of an overloaded main propulsion diesel engine is ____.

The center line condition of the transmission shaft can be checked by ____.

Fins are installed on the fireside of water-tubes used in waste boiler to .

For safe storage, the maximum allowable temperature to which refrigerant bottles should be exposed is _____.