轮机部三管轮考试模拟题6(轮机英语)

During the deck repair, ____ should be measured firstly before tail shaft is drawn out.

Since heat will not flow freely from a body at a _____ temperature to another at a _____ temperature, it is necessary to expend mechanical work, heat, or electrical energy from an external source to achieve refrigeration.

The crankshafts on the large modern 2-stroke crosshead engines are ______ big ______ makes as a single unit and so are constructed by joining together individual forgings.

The time of discharging oil is short, but oily water separator discharges oil frequentlyThe possible reason is ____.

To prevent the build up of high stresses engine must not be run continuously _____.

Dirty oil must be _____ before being used again.

Which of the following statements is true concerning the overall efficiency of air compressors?

Which of the following items don’t belong to dock repair works?

The lubrication to the cylinders affected by the fire must be ______ to prevent seizure and all scavenge drains must be ______ to prevent the discharge of sparks and burning oil from the drains into the engine room.

Before the oily water is installed on board ships, it must have ____.

The resistance of a conductor varies _____.

The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloyWhat is the meaning of “which” in the sentence above?

Why will a two stage flash type distilling plant tend to operate more efficiently when operating in cold seawater?

The sensible heat of air is dependent upon the _____.

When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should _____.

With UMS, when the engine room is unwatched _____ will control the main engine.

Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by .

In a general cargo crane, _____ is fitted to raise or lower the jib.

What would the amps be at 240 volts with an 8 ohm resistance?

Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capabilityWhich of the key points would only require an alarm sensor?

At the beginning of the watch the current operational parameters and the condition of all machinery should be verified and also the log readings should correspond with those _____.

The rotor of the hydraulic motor rotates at a speed proportional to the _____.

Intercoolers installed on starting air compressors, reduce the possibility of__________.

As an alternative to the conventional seawater cooling system, is based on principles about cooler locations, flow control and preheating, but with a central cooler and one additional set of pumps.

The safety valve should be _____ in the presence of C/E and Surveyor.

In the process of the shafting management, special attention should be paid to____.

One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an .

Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?

Fuel injection systems meter fuel, atomize fuel, and _____.

The ____ should be kept running for about half an hour after F.W.E.

If a cam-controlled engine has a normal injection pressure at rated speed, the injection pressure will be_____at slow speed.

A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with .

Generators should have an excitation/voltage regulation system which will enable them to share the steady state reactive load _____ no machine exceeds its proportional share of reactive load by more than 10% of the rated reactive load of the largest generator.

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the .

The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the .

The cleaned heated oil, after passing through the centrifuges, is to be pumped to a _____.

The bore of each cylinder is formed in a liner which can be _____ when worn out.

A smoking exhaust from an operating diesel engine could be caused by ________.

A shipboard oil pollution emergency plan is required of _____.

The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the __________.

Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by _________.

Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?

A centrifugal pump attempting to develop flow against a closed discharge valve has a/an _____.

At least _____ cylinders in four-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.

The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust _____.

Which of the following liquids can ordinarily be discharged overboard without being processed through an oily water separator?

The latent heat of water vapor in air is dependent upon the _______.

In a diesel engine, excessive cylinder liner wear will cause _____(1) increased blow-by; (2) wear between the piston ring and groove.

The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by _____.

The ____ returns the pump operating rod to mid position as soon as the helmsman stops turning the wheel

Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?

The distance from TDC to BDC of the diesel engine is called _____.

Which of the following pumps are self-priming, and can deal with liquid from a level below the pump; (1) ejector;(2) screw;(3) centrifugal.

The piston cooling system may employ similar components, except that a drain tank is used instead of a head tankThat means this system _____.

Rudder position is shown on the bridge by the .

The ____ is used to handle the cargo.

Which of the listed characteristics can be applied to R- 12 vapor?

The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as _____.

Which of the following represents the significance the fuel oil cetane number?

The pistons are cooled by ____ oil from the forced lubrication.

The crown is fairly thick with the cylindrical parts _____ to a thinner section.

If fuel tank levels are found to have increased after a grounding, you should suspect _____.

The Company should ensure that the master is fully _____ with the Companys SMS.

Which of the listed materials would be considered as a bunting class "C" fire?

Exhaust temperature increases in all cylinders, the possible cause may be_____(1) increased scavenging air temperature, (2) air in fuel pumps and fuel valves, (3) fouling of air and gas passages.

When is the most critical time of bunkering in regards to oil pollution?

For a general cargo ship, is not the necessary certificate/document that the PSCO will examine.

A number of biological sewage treatments plants are in use at sea but nearly all work on the principle called ____.

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

The temperature at which water vapor in the atmosphere begins to condense is called the _____.

Why is the ring belt narrower in diameter than the skirt of a piston designed for a diesel engine?

With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to _____.

When the PSCO would like to witness a fire drill carried out by the crew, he should consult ______ to locate a simulated fire.

A _____ pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.

A-frames are mounted on the bed plate and support _____ and cylinder block.

Keel coolers fouled with marine growth, will result in _______.

No specific period is given for the renewal of the lubricating oil filter element as this should be done_____ a figure of 0.7 bars is shown on the gauge.

In cargo crane, _____ for lifting the load.

The _____ belongs to the mooring equipment.

The temperature _____ a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure _____ it is subjected in the containing vessel.

How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?

A smoking burner with a pulsating flame in auxiliary boiler, is an indication that the .

Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because________.

If the effective bearing area has been reduced , remedial action should be taken.

In a modern three-phase A.Csynchronous brushless generator, the excitation winding is on the rotorThat means _____.

The operating diesel generators will have their exhaust temperatures, cooling water and lubricating oil temperatures and pressures _____ in much the same way as for the main engine.

As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to _____.

Proper combustion in a boiler would be indicated by _____.

The insertion of shims between the foot of a marine type connecting rod and a bearing box would result in __________.

The ______ of the life-raft is sufficient for all of you.

In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in ____.

The mechanical exhaust valve operation system is replaced by______in an electronic controlled ME engine.

The receiver used in a refrigeration system_______.

Which of the following statements describes the function of an air compressor intake filter?

Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?

If the engine does start on air, but combustion does not immediately begin, the cause may be _____.

Which of the listed effects represents the purpose of heat treating steel?

If a liquid sight flow indicator in a refrigeration system shows gas bubbles in motion passing inside of the glass, there is _____.

The propeller consists of a ______ with several blades of helicoidal form. attached to it.

Which of the following statements describes the functions of a reservoir used in a hydraulic system?

Ships do not permitted to the TBT paint after 2008It is required by ____.

The device that most commonly utilizes the principle of electromagnetic induction is the_____.

A distance piece, with ground faces, known as a compression plate, may be interposed between the rod and the beating housing, its thickness being chosen to ensure the correct _____.

When ship navigating in rough sea, the correct operation is .

Broken piston rings manifest themselves during the scavenge port inspection by_____.

Flexible hose under pressure in a hydraulic system will _____.

The coil of wire rotating in the magnetic field produces the_____.

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?

The cylinder head, cylinder liner and _____ form. the combustion chamber.

In a diesel engine, blow-by__________.

The lowest ring of a piston is _____.

What is the function of the after-cooler installed in the diesel engine air intakes system?

Before dismantling the pipe, would you ______ the oil retained in the hose with ______?

In a diesel engine, an integral liner is one in which the cooling water __________Iflows through the cylinder liner jackets Ⅱ.touches the outer side of the liner

Drinking salt water will .

What is head tank in the closed cooling water system used for?

Wrought iron has an inherent resistance to corrosion but is not to be had freely , its place has been taken by the cuprous alloysAccording to the above sentence , which of the following statements is true?

Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?

Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the _____.

Internal combustion engine crankcase vent outlets must be equipped with _______

The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to .

In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of _____.

An emergency bilge pumping system is provided and should be _____ of the main bilge pumping system, according to the SOLAS 74 Convention.

The thermal expansion valve reacts directly to the _________.

The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the _____.

A single piece_____ fitted with bronze rings guides the piston in the cylinder liner.

A class "B" fire would most likely occur in the _____.

What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?.

A feed pump for an auxiliary boiler might lose suction if the _____.

At which of the following locations would a duplex pressure gage most likely be located?

A is the documentary attestation for the delivery of stores and spare parts.

When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____.

The humidifier’s valve of air-condition should be ____, when the temperature is lower than 0°C.

It should be ensured that only _____ vapor is handled by the refrigeration compressor.

____ connectors hold best if a wire is accidentally pulled or a connection becomes loose.

Air motion is induced in a four-stroke/cycle diesel engine cylinder to improve air fuel mixing, and is known as .

Electrical circuits are protected against overheating by means of a/an _____.

In order to accurately measure very low pressures, which of the instruments listed should be used?C

Why is it desirable to operate paralleled AC generators at the same power factor?

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

The____ of the telemotor is mounted on the steering gear

In an automation system, the effect of a control action sensed by a controller is known as __________.

The pH value of water in a diesel engine closed cooling water system should be maintained between _____.

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a .

In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe

What safety precautions should be observed by the crew while working around machinery in an engine room?

An over-speed trip stops a diesel engine when the engine ________.

Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in ______.

_____ at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.

Which of the following beneficial results can be expected from supercharging a previously naturally aspirated engine?

In the cylinder head of a two-stroke/cycle diesel engine, valves are used for___.

The injector pump is operated by a cam which drives the plunger _____.

In an operating refrigeration system low on refrigerant, a liquid line sight glass will______.

The frequency of an alternator at a given RPM is determined by the _____.

If the resistance of a circuit is cut in half and the applied voltage is kept constant, the current flow will be _____.

With reference to a radial piston pump, which one of the following statements is false?

The pushbutton on the handset of a ships sound-powered telephone must be depressed to _____.

The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that .

Your vessel is taking on bunkers from a shore side facility, if oil begins flowing from one tank vent, which of the following actions should be taken FIRST?

Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be _____.