海船船员适任证书三管轮模拟试题4(轮机英语)

Load control on a diesel engine is accomplished by _____.

Under normal conditions, the quantity of air circulation becomes less and lessWhat is the reason?

There is a support ring between the cylinder block and collar of the cylinder liner, thus carrying both the liner and the cylinder coverIt also passes to the cooling bores and to the cover.

The lube oil in the bearings is drawn from a _____, usually located in the bedplate.

An acceptable method of measuring for the correct rotational force applied to the connecting rod and main bearing bolts, is to use a__________.

When accepting engine room spares, you should .

D.Cgenerators are classified according to the manner in which .

Which of the following would not cause high suction pressure?

What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?

The remaining oil/water mixture now flows down into the fine separating compartment and moves slowly between the_____ in the Turbulo separator.

When carrying out the voyage trial, the M.Eis not necessary to take ____ trial.

Records of garbage disposal are required to be maintained _____.

Around the combustion chamber, all the main components are to give low thermal strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner.

Most pump manufacturers recommended that the discharge piping for centrifugal pumps be _____.

After a ship enters service it is_____ for the main bus-bar to be made dead.

If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should _____.

A diesel engine piston ring face is in direct contact with the _____.

The guide shoes are secured to the crosshead by means of .

If the scavenge fire is of a more major nature, if there is a risk of the fire extending or if the scavenge trunk is adjacent to the crankcase with risk of a hot spot developing it sometimes becomes necessary to ______ the engine.

When preparing an engine for water temperature .

Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?

In the two stroke diesel engine, it is designed so that the oil impingement is timed to proceed only on the piston ring belt during .

_____ the supercharge pressure is, _____ power an engine develops.

Air compressors are equipped with unloading systems for the purpose of _____.

____ belongs to emergency power supplying equipments.

A person on a fixed or floating platform. engaged in oil exploration MAY discharge food waste into the sea when the distance from the nearest land is at least

Which of the following materials is a good insulator?

If the pump for a hydraulic anchor windlass is over heating, the cause may be _____.

Before reassembling any machinery, you should _____.

In common rail engines, the fuel is_____ before is injected into the cylinders.

In order to control thermal stresses, some types of modern engines use pistons with .

The PRIMARY function of a waste heat boiler is to _____.

In a refrigeration plant the _____ need defrosting.

Before using or operating any equipment, you should first _____ its manual thoroughly and understand its contents_____.

The presence of bubbles in a refrigeration system liquid line may _____.

In a general cargo crane, _____ is fitted to lift the cargo load.

The ports are drilled in the liners at an angle of approx20℃ the result being that _____ is given a rotary movement.

The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is _____.

The young motorman as well as the others ______ to operate the oil separator.

In extreme weather conditions, either hot or cold, control of the air conditioning plant presents _____ difficulties.

Generally, the gudgeon pin is fully floating in both connecting rod small end and _____.

Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?

In the presence of an open flame or hot surfaces, chlorinated fluorocarbon refrigerants decomposes and from _______

When you adjust a thermostatic expansion valve, _____.

As for a oil-fired boiler too much air would indicated by _____.

A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring___________.

Flame failure in an automatically fired auxiliary boiler can from a/an _________.

The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the __________.

The symbol (GB786.1-93) at right side represents ____.

Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect ______.

The necessity for administering artificial respiration may be recognized by the victims _____.

Dirt lodged on the nozzle valve seat of a fuel injection nozzle will cause ___________.

Oil mist detectors are usually used on board to detect oil mist density within _____.

The energy associated with molecules is known as _____.

Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished _____.

Disposal of all kinds of garbage but is prohibited within Special Areas.

In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the _____.

We’d better ______ economic speed ______ fuel consumption.

The centrifugal pump component responsible for converting the mechanical energy of the liquid being pumped, to that of kinetic energy is the _____.

The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the _____ caused by the friction at the bearings.

A dark exhaust from a running diesel engine can be caused by ____.

A mixture of 45%cetane and 55% alpha-methyl-naphthalene is found to have the same ignition delay as a sample of diesel oil .The sample can be described as having a/an______.

If you observe any situation which presents a safety or pollution hazard during fuel transfer operations, which of the following actions should be taken FIRST?

Why is it necessary to warn engine room personnel before activating the fixed CO2 system?

Which of the factors listed has the greatest effect on the mechanical efficiency of a diesel engine?

The Company should ensure that _____ involved in the Company’s SMS have an adequate understanding of relevant rules, regulations, codes and guidelines.

Increased internal leakage, in addition to poor hydraulic system response, and inadequate lubrication, is the result of _____.

One function of the thermal expansion valve is to________.

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

_____ systems are provided with a stand-by device which will automatically be put in use in the even of the running device failing through a fault condition.

TWO STEP CONTROLER ACTION is mainly .

Each piston stuffing box is provided with two sealing rings and three_____.

Worn main bearing will cause the compression ratio of an auxiliary diesel engine to______.

To proceed to the assistance of a ship in distress is .

When the diesel is stopped, which of the following items is wrong?

_____ are used for hauling in or letting out the wires which fasten the ship to the shore.

After arrived at the port, if it is necessary to lift the piston out and inspect the M.Etemporarily, the chief engineer should report the situation to the____, and the operation could be performed only after having the approvement of relevant department.

An un-loader is installed on an air compressor to _____.

Faulty operation of any system is indicated by very definite _____.

Power transformers are rated in _____.

A full-flow 50μm filter is installed , so the injection system components on the main engine are safeguarded.

Which of the following conditions could be a cause of excessive fuel dilution of diesel engine lube oil?

Scuffed cylinder liner surfaces in a diesel engine can result form____________.

In more recent years, _____ heat exchangers have frequently been employed for jacket water and oil cooling.

If a refrigeration crankcase compressor were short cycling on the low pressure cutout switch, the cause might be that the _____.

Which is a function of the voltage regulators used with AC generators?

Condensate must be drained from the intercooler and after-coolers of an air compressor because _____.

In _____ pump a closed discharge valve will not cause excessive pressure to build up.

_____ is secured by means of side-chock bolts and end-chock bolts.

When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will indicated?

In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to _____.

The four-stroke cycle is so called because it takes _____ to complete the processes needed to convert the energy in the fuel into work.

Propeller running at ____ are generally efficient.

In the process of the stand-by, warm-up the engine usually through give preheat of which parts of the diesel engine?

When a fuel injection nozzle overheats, which of the problems listed can be expected?

If there are ______ in the repair work, please come to our duty engineer at once.

It is necessary for us _____ after having served for a certain period.

The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means _____.

Which of the listed fire extinguishers is recommended for use on an electrical switchboard fire?

According to the ISPS Code, for a sailing ship, the following except_____should be onboard.

When the ship security alert system is activated, it shall not .

Four strokes consist of suction, compression, _____ and exhaust stroke.

Most anchor handling equipment incorporates _____ for mooring purposes.

Which of the listed set of conditions indicates early fuel injection timing?

When comparing the air with 50% of relative humidity with the air with 100% of relative humidity, which one will hold more water?

An exhaust gas bypass is installed on a waste heat boiler in order to ______.

Which is the pollution prevention equipment?

The _____, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.

Your vessel has run aground and upon taking fuel oil tank soundings, you find that a fuel tank level has increasedYou therefore should suspect _____.

The Oil Record Book must be maintained onboard the vessel for _____.

In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs.

The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to _____ the acid conditions.

In some cases facilities may be provided for emergency overriding oil pressure shutdown, if this facility is used, adequate warning must be given to _____.

The desirable properties of a marine fuel oil should include＿.

The oil sludge is burnt in the ______ on boardI’ll show you the ashes.

Electrical leads and insulation on a motor should be painted with_____.

Failure of fuel injection is usually due to trouble in the _____.

Pump up the starting air reservoirs to their maximum pressure and ______ the air reservoirs and air system.

When there is a fire in a large electric motor, normally the very FIRST step is to _____.

In a flash type evaporator, the brine overboard pump is vented directly to the .

When administering artificial respiration to an adult, the breathing cycle should be repeated about .

Who is in charge of the auxiliary boilers?

A cast steel strong back is fitted in way of the combustion space to help absorb _____.

In a closed diesel engine freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the _____.

The total power consumed in a parallel circuit is _____.

A power failure in the hydraulic system of a compact type steering gear would cause the rudder to .

A diesel engine may fail to start due to ____________.

Which of the following may cause that an engine doesnt turn on starting air?

It is important to note that the injection only takes place when the plunger is moving up the cam _____.

"Movement of engine no longer required." means “_____”.

The ____ enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.

The soda-acid portable extinguishers must be discharged and refilled _____.

The hydraulic _____ is used to control engine speed.

A (n) _____ is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.

All bilge suction must be fitted with suitable _____, which in the machinery space would be mud boxes positioned at floor-plate level for easy access.

Operational amplifiers, used primarily in analog circuits, are characterized by .

If a refrigeration compressor is running continuously without lowering the temperature in the refrigerated space, the trouble may be _____.

To obtain maximum efficiency, two stage air compressors are usually _____.

When inspecting piston rings through the ports of a two-stroke/cycle diesel engine, black areas on the sealing surfaces are the result of .

The purpose of DC generator brushes is to _____.

Your assigned emergency station aboard ship can be found on the ship’s ____.

When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you _____.

Under centrifugal pumps are the volute, diffuser, mixed-flow, axial flow and _____ or regenerative types.

Stainless steel is material commonly used for temperatures up to 50℃; beyond that and for severe corrosive conditions other materials are requiredThe bold and italic word “that” probably means _____.

____ is not installed on the main switchboard.

If the atomizer holes are enlarged beyond the makers recommended size, the atomizer must be _____.

Under the regulations implementing MARPOL, a mobile offshore drilling unit is required to have an International Oil Pollution Prevention (IOPP) certificate when the unit _____.

An operational amplifier, as used in todays consoles, may have a calculated gain of 5.This means that as the input changes by _____.

If a diesel engine runs out of fuel, you can expect trouble from __________.

On engines having oil cooled pistons the lubricating oil pre-heater must be put into operation and the rate of heating so ______ that the temperature of the piston cooling oil returns are 32 to 35℃ over a period of at least two hours.

The ground terminal of a starter should be connected to ____.

In cleaning up an oil spill, the use of chemical agents would _____.

Auxiliary boilers can be classified as .

Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be placed in the _____.

The solenoid valve can be typed as a .

A large, low-speed, main propulsion diesel engine uses sea water to directly cool the _____.

The _____ or balance tank collects the re-circulated fuel oil.

The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its _____.

Which of the following methods can not remove the non-separable emulsified oil in bilge water?

The records of ship security training, drills and exercises shall be kept in the working language or languages of the shipIf the language or languages used are not_______, a translation into one of these languages shall be included.