海船船员适任证书三管轮模拟试题5(轮机英语)

The burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the crankshaftWhat does “it” mean in this sentence?

Which of the following can be used in hydraulic transmission system?

Under normal operating conditions, the rudder is hydraulically locked unless _____.

Which of the following statements is not true concerning symptom of a fire in the scavenge air box?

If a diesel engines exhaust temperature is abnormally high, the cause could be______.

The power factor is a measure of the phase difference between voltage and current and is expressed as the_____ of the phase angle.

Diesel engine mufflers accomplish noise reduction by _____.

“Stand by engine” means _____.

Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?

A fire is considered "under control" when _____.

Today, crankshafts for large 2-stroke crosshead engines are of the ______ type.

When sailing in cold zones, the____ should be heated.

Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during _____.

We have stayed at Shanghai port for a long timeThe fouling on the ship’s hull greatly increases her _____.

Usually, emergency electricity supplies to on board.

Which of the following will be the advantage of a centrifugal pump as compared with a reciprocating pump? (1) Its discharge is continuous; (2) It has no internal valves; (3) Upon accidental closing of discharge valve, excessive pressure will not build up.

Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from _____.

Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its _____.

Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?

An oceangoing ship of 400 gross tons and above must be fitted with a standard discharge shore connectionWhat is the size of the bolt circle diameter of the shore connection required to transfer oily ballast to a shore side reception facility?

Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?

In a refrigeration system, the refrigerant absorbs the latent heat of vaporization in the ____.

With _____ unit the timing of fuel injection of an engine can be regulated automatically.

Which of the following methods might favor oil emulsion in bilge water?

The crank throws are displaced from _____ to obtained the same number of degrees between the different crank throws.

If an operating auxiliary boiler has a water pH reading of 7, you should _____.

The cylinder liners are made of _____ and the cylinder surfaces are sometimes chromium-plated.

Power is defined as the _____.

The diameter of the gravity disc is too bigIt causes oil to flow through the water outletWe changed the disc and no _____ is found in the water outlet.

In which of the scavenging methods listed will the exhaust valve be located in the cylinder head?

Corrosion inhibitors and/or soluble oils are added to diesel engine cooling systems to __________.

Hearing a strong noise, _____ at once.

Time delayed or delayed action-type fuses are designed to _____.

Which of the files listed is tapered on three sides and is used to file acute internal angles?

In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the_____.

With reference to an axial piston pump, which one of the following statements is true?

In order to culture and propagate enough bacteria to treat the body and galley wastes____

When administering artificial respiration, it is of the utmost important to .

The lube oil pump used in a diesel engine is a _____.

Which one of the following repair will cost the least cost? .

The loss of _____ from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.

One advantage of dry cylinder liners used in a diesel engine is the_________.

A liquid sight flow indicator in a refrigeration system is examined and gas bubbles are noted in motion with the fluid flowThis means _____.

The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is _____.

A piston is at bottom dead center when it is_________.

Fire and lifeboat stations are required to be listed on the _____.

Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or _____.

Low compression of diesel engine may result from _____.

The purpose of a main switchboard circuit breakers reverse-power trip is to _____.

If , the PSCO should proceed to a more detailed inspection.

If a diesel engine starts firing, but is unable to come up normal speed, either without load or even under a small load, the cause may be ___________.

If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the _____.

If due to thick and hard deposits of carbon, the piston rings cannot move freely in their grooves, dark areas will often appear on the upper part of the cylinder wall (may not be the risible at port inspection)What condition of the piston rings can result in this phenomenon?

The interior of some diesel engine saltwater heat exchangers are protected from corrosion by the use of_______.

Black smoke coming from a boiler can be caused by _____.

In a diesel engine, blow-by is generally the result of worn_______.

The size of the exhaust valve opening is __________________.

An excessive amount of water is prevented from entering a vessel using a water lubricated stern tube bearing by the use of the _____.

_____ the bodies are, _____ the friction will be.

Main steam and exhaust pipes for winches and similar gear shall not pass through crew accommodation nor, whenever technically possible, through alleyways leading to crew accommodation; where they do pass through such alleyways, they shall be adequately .

The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as _____.

A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine________.

Which of the listed fire extinguishers cannot be easily recharged aboard ship?

A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a ________.

The principle of separation by which all commercially available oily water separators function is _____ differential between oil and water.

The abbreviation TDC means _____.

The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is ______.

Adequate attention must be given to the water cooling system of the air compressors, for _____ can cause condensation on the cylinder walls.

The four basic components of a fire are chain reaction, heat, fuel, and _____.

The joint face between the cylinder cover and the liner is arranged ______ the combustion process as possible.

On a cargo vessel, fire and boat drills must be held within 24 hours of leaving port if the percentage of the crew replaced is more than _____.

_____ fuel oils _____ lubricating oils require treatment before passing to the engine.

The purpose of the skirt or trunk in four-stroke cycle engines is to act in a similar manner to a _____.

An after-cooler installed between the turbocharger and the cylinder air inlet _______.

STCW shall apply to seafarers_____ on board seagoing ships entitled to fly the flag of a Party.

The needle valve will open when the fuel pressure acting on the needle valve _____ exerts a sufficient force to overcome the spring compression.

In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must_____.

Leaking oil seals on a diesel engine turbocharger can cause

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be _____.

External and internal leakage in hydraulic systems may be caused by _____.

How long warning must be provided by the CO2 warning Mann before CO2 is discharged into a space _____.

The term “the Company” in the ISM Code is defined as ______.

An oxygen indicator will detect _____.

If an anchor windlass has been idle for some time, you should _____.

The initial voltage of self-excitation generator set up by .

Most air conditioning units have _____ for adjusting the ratio of recirculated fresh airCare must be taken not to reduce the fresh air so that stuffiness or smells arise.

In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause .

When start a screw pump, the by pass valve should be ____.

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

Air cocks, usually positioned at the _____ in a circulating system, is used to get rid of the air in the system.

In the first survey, _____ compiles the survey report and fills in certificate.

The mode of control employed by an alarm circuit is a ________.

Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by_________________.

Which of the listed refrigeration system components keeps the refrigerant circulating through the system?

The usual number of single-acting pistons used in a variable stroke axial-piston pump is _____.

.Icreasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening ________.

When a point rotates about an axis and, at the same time, moves parallel to that axis, it describes _____.

Which one is NOT the ‘clear grounds’ for a more detailed inspection?

The system will include various _____ such as low tank level alarms and remote operation of tank outlet valves in the events of a fire.

When a boiler is operating, the water level in the gauge glass reads _____ when the boiler is shut down.

The diesel engine must be started before it can run by itselfFor this purpose _____ has to be used.

If a radial piston hydraulic pump fails to deliver rated fluid volume, the cause can be _____.

The ______is used to measure power.

Which of the following statements is true concerning an oil cooler? .

A fire and boat drill on a tank vessel shall, by regulation, include _____.

The purpose of the flywheel of a diesel engine is to _____.

Which of the following conditions is most likely to occur when unburned fuel contaminates the crankcase of a diesel engine?

The cylinder liner forming the cylinder wall and the inside of the water jacket is called a ____.

Administrations should bear in mind the significance of _____ in maintaining safety of life and property at sea and in preventing marine pollution.

While working in the engine room, you hear seven short blasts followed by one long blast on the ships whistle, supplemented by the same signal on the general alarm bellsYou should _____.

When the current flow through a copper wire increases, its _____.

How dose water enter the crankcase of a diesel engine?

If liquid refrigerant accidentally comes in contact with the eyes, _____ immediately.

The crankshaft receives and transmits the full working power of the engine and is subjected to fluctuating _____.

A diesel engine fails to start due to excessive water in the fuelBefore the engine can be started, the water should be removed from the__________.

A lubricant often has to perform. many duties in any situation, in addition to its fundamental job of_____.

Energy losses due to _____ occur in every machine.

A centrifuge arranged to separate impurities and small amounts of water from oil is known as _____.

Convection is the principal means _____ temperature is equilibrated in liquids and gases.

Excessive diesel engine back pressure may be an indication of _____.

Following the failure of one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which of the following actions should be taken prior to further operation of the engine? .

Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?

The breaking-up of fuel as it enters a diesel engine cylinder is known as ______.

The instantaneous reduction in voltage of an AC generator, resulting from an increase in load, and prior to the automatic voltage regulator correcting the situation, is called voltage _____.

The lifting pressure of ____ is set in the presence of a Surveyor it is locked and cannot be changed.

Large pipes or _____ are fitted between the steam and water drums to ensure good natural circulation of water.

According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?

With respect to diesel fuel, the ease with which a cold engine will start is dependent upon the__________

STCW78/95 states that the office in charge of the engineering watch is the representative .

Connecting rods in a diesel engine are used to connect the _____.

_____ providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.

The ______ of the semi-built method of the construction crankshaft is that by making the two webs and crankpin from a single forging the grain flow in the steel follows the web round into the crankpin and back down the other web.

Excessive vibration in an operating diesel generator may be caused by _____.

The usual method of effectively applying foam on a fire is by ______.

The abandon ship signal sounded by the vessels whistle is _____.

A Convention about safety of life at sea was adopted in 1974 which included a new amendment procedure, according which an amendment shall enter into force .

An electric heater built into some smaller diesel engines is used to _____.

Usually the panels are interlocked with _____ so that the devices can be made dead before the doors are opened.

To prevent the spread of fire by convection you should _____.

Moisture in a refrigeration system can cause _____.

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

_____ belongs to the cargo handling equipment.

An auxiliary diesel engine may fail to start due to____________.

If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be ___________.

In order to remove the carbon deposit from the threaded recess, we can use .

Distilled water from an evaporator may be discharged into a potable water tank _____.

As the plunger moves upwards in the barrel, injection will commence once the plunger has _____ the spill ports and the pressure builds up.

These include deck machinery such as mooring equipment, anchor handling equipment, cranes and _____.

Please draw out a 0.l mm _____ between the two halves of the bearing to reduce the clearance.

In fighting a fire in a fuel tank, the FIRST action you should attempt is to _____.

The clearance volume for a single stage compressor is defined as the space created between the _____.

The safety management objectives of the ISM Code are ______.

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

A drop in compression pressure in one cylinder of a diesel engine can be caused by_______.

Aother name for the “swash plate” in the variable delivery pump is

In diesel engines designed with a crosshead, the motion of the piston rod can be described as _____.

The control mode where the position of the final control element has a linear relationship with the position or value of the controller, variable is known as__________.

The fuel injector pump is operated by _____ which drives the plunger up and down.

_____ is the temperature at which a liquid fuel gives off sufficient vapor to form. an ignitable mixture near its surface.

The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that loadWhich of the following statements describes this requirement?