轮机部三管轮考试模拟题4(轮机英语)

On small, low pressure, air compressors, the cylinders are usually lubricated by the _____.

In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?

Engine room fires have been started by neglected oil leaks dripping on to hot pipes or exhaust manifolds _____ insulation has not been replaced after maintenance.

The heat required to change a substance from a liquid to a gas without experiencing a temperature change is defined as the latent heat of _____.

After fitting back in place the gear wheels, don’t forget to _____ them.

The thermal expansion valve responds to the______.

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

A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzleThis requires immediate repair because of the _______.

Fire detecting systems on merchant vessels may be arranged to sense _____.

The magnetic field is provided by electromagnets so arranged that adjacent poles have _____.

The expansion tank in a diesel engine closed freshwater cooling system is located at _____.

The____ is fitted in the main steam supply line and is usually of the non-return type.

Waste oil from the lube oil sumps of machinery may NOT be _____.

To avoid scavenge fires occurring the engine timing and equipment maintenance ______.

The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and _____ of the pistons in the cylinders.

If separating effect is not good, we can improve it by ____.

Low compression results from _____.

In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should_________.

Which of the following conditions may be attributed to a fouled turbocharger compressor inlet screen or filter? .

When started, a complete oily water separating unit is first filled _____The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.

Machinery operating features are designed to help conserve energyWhich of the following results will not contribute to energy conservation?

It is during _____ that work energy is being put into the engine; during the other 3 strokes of the piston, the engine is having to do the work.

Equal power factors on paralleled AC generators are maintained by an automatic _____.

When discharging bilge water, which criteria must be observed? .

A dirty lube oil strainer can result in .

An increase in diesel engine crankcase pressure generally indicates excessive_______.

Great care is dedicated to the removal of from the scavenge air.

Concerning the management of sewage treatment plant using activated sludge, which of the following is correct?

Compared to a naturally aspirated diesel engine, a supercharged diesel engine has_________.

A high rate of separation between oil and water is favored by _____.

Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?

Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?

Turbocharging system may be designed to operate on either the _____ or the constant pressure exhaust system.

Any electric motor can be constructed to be_____.

Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of ______.

Diesel engine ‘blow-by’ into the crankcase is caused by excessive ring______.

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by _____.

The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the _____.

A naturally aspirated diesel engine at full throttle will have an intake manifold pressure _____.

Which harmful consequence may be the result of lube oil sludge accumulation? .

Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because ____________.

Diesel engine waste heat boiler construction is usually of the fire-tube or .

If a refrigeration system compressor crankcase is sweating, you should _____.

Diesel engine exhaust gas temperatures can be used to determine individual cylinder _____.

A defective injector nozzle in a propulsion diesel engine can cause________.

The ______is fitted on an oily water separator.

Oil pressure in the lubrication system is_______ than the static sea water head to ensure that sea water cannot enter the sterntube in the event of seal failure.

Most lifeboats are equipped with _____.

When monitoring diesel engine performance, the most useful instrument to use is the ________________.

A _____ is the foundation of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.

Many cast iron pistons are designed with heat dams, which serve to ____________.

Which of the following statements is true regarding the installation of piston rings on two-stroke/cycle, diesel engines as compared to four-stroke/cycle, diesel engines? .

The main purpose of inspection for a running diesel engine is____.

The outside diameter of the pipe is _____ the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.

The boiler feed pump discharge pressure is higher than the steam drum pressure to _____.

A variable displacement system of hydraulic drives consists of _____.

The _____ compressor and its electrical motor are entirely housed in a gas-tight casing.

Air blowing from the intake air filter of an operating air compressor indicates ______.

If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an ___________.

The operation between two fuel injections is called a _____.

_____ are fitted in the exhaust system and facilitate charge removal and scavenging in each cylinder.

In an alternating current electrical system, a low system power factor is a direct sign of _____.

Which of the following statements is true concerning any evaporator? .

Poor combustion in a diesel engine can be caused by _____.

During waste clothes being charged into an incinerator, the auxiliary burner____.

The connecting rob is fitted between the crosshead and the crankshaftIt transmits the firing force, and together with the crankshaft convert the _____ motion to a _____ motion.

Latent heat changes the ______of water.

Under the terms of ISPS Code, shipping companies are required to designate a Company Security Officer for the Company and a____ for each of its ships.

The flame safeguard control system of a large automatic auxiliary boiler will provide fuel shut off in the case of high ____________.

The fourth engineer accompanied by the workers on oil barge measures the oil levels, temperature and _____ in the tanks.

If a diesel engine were running at 20% overload with a smoky exhaust, you should_____.

The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as_______.

Usually____ handles the majority of the correspondence and negotiation needed during transactions of stores and spare parts in the engine department.

The spreading of fire as a result of heat being carried through a vessels ventilation system, is an example of heat transfer by _____.

A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the ______.

Which of the following problems would be the probable cause for the faulty operation of a reciprocating air compressor suction valve?

The process of removing moisture from air is known as_____.

Which of the electrical properties listed will always be the same for each component in a parallel circuit?

During the suction stroke, the piston is moving _____.

A fire in a pile of canvas would be classified as a _____.

What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?

Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and individual pump for each cylinder?

____ can cause oil flow from sludge outlet of self cleaning separator.

The air supplied to a diesel engine is compressed to _____(1) provide heat for the ignition of the fuel; (2) decrease injection delay.

Which of the listed conditions will occur if a diesel engine exhaust valve is leaking?

The nameplate of an AC non-synchronous motor shows that running speed is 1460r/minfrequency 50HzYou can infer that the number of magnetic poles is .

An excessive charge of refrigerant in an air-cooled refrigeration system can cause _____.

Cracking of a diesel piston crown can result from_______________.

Electric circuits are protected against overloads and short circuits by means of a/an _____.

If a refrigeration system were short of refrigerant, the condition would result in _____.

The safe rate of bunkering heavy fuel oil is directly related to the _____.

Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to _____________.

Personnel working with refrigeration systems, and subject to the exposure of refrigerants should wear _____.

When fighting a spreading fire resulting from a broken fuel line, you should FIRST _____.

During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure __________.

Operating a diesel engine under light loads and at low temperatures for an exhaust for an extended period can result in________.

The officer in charge of the engineering ______ the watch to the reliving officer if there is reason to believe that the latter is obviously not capable of carrying out the watch-keeping duties effectively.

Sealing in pump shaft is achieved by means of the _____.

The pressure head of a pump is given in the unit of _____.

The quality of the fuel oil and lube oil _____, Im afraid.

Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the _____.

______ sometimes called filter, is a device designed to prevent the passage of unwanted solids into the system.

_______is not a feature of the electronic controlled engines.

While loading bunkers, you notice oil on the water near the vesselWhat should you do first？

“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?” asked the oil barge owner.

For practical purposes, in a simple series circuit, the source voltage will be dropped across one resistor if it has_____.

The most important factor that causes the wear of the engine parts is _____.

In any diesel engine closed freshwater cooling system, the lowest pressure exists at the _____.

The function of lubricating oil is to ______.

The dew point of air is reached when the wet bulb temperature is _____.

When the voltage remains constant and the resistance is increased in a series circuit, the flow of current _____.

Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except ____.

The cylinder oil will have to neutralize the acidic products of combustion and have good _____ properties to keep the metal surfaces clean.

A swing check valve is used in a pipeline to _____.

A bronze bearing liner with a lead-tin flashing has a milky-white color over most of its surface and some areas of exposed bronze, the white coloring indicates________.

The crankshaft of diesel engine is supported by _____.

Low compressor head pressure in a refrigeration system can be caused by _____.

There is _____ in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition.

Each ship shall carry on board a ship security plan approved by _______.

According to the ship emergency plan, when average accident happened and the captain made the decision to withdraw from the engine room before leaving the engine room, the wrong operation is that ____.

_____ is made of a boss with separated blades mounted into it.

Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?

Which of the following statements describes the results of excessive microbiological growths within a fuel system?

While on watch in the engine room, you hear a continuous sounding of the general alarmWhich of the following actions should you take?

Bedplates are the _____ of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.

The position of the interface between oil and water within the centrifuge is achieved by the use of _____.

When ship in the dock repairing, engine department should emphasize on the inspection of ____.

Improper maintenance of an automatic auxiliary boiler oil burner could result in _____.

The cylinder covers are secured by eight elastic holding down arranged in four pairs.

The refrigerant leaves the evaporator of a refrigeration system as a low pressure _____.

In a diesel engine, when refitting piston rings you should ____________Icheck the ring gap at the smallest diameter of the cylinder ⅡRemove carbon from the ring groove

Low compression pressure in a diesel engine may be the result of ________.

According to Anneal I of MARPOL 73/78, the discharging oil content of the machinery space bilges must be lower than .

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

Moisture absorbed in the windings or condensed on the surface of electrical machinery insulation _____.

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

This arrangement is _____ if the elements are directly connected to one another and the control action takes place without human involvement.

If you _____ the equipment more carefully before sail, we _____ so much trouble now.

Higher than normal jacket water temperatures occurring in all cylinders of a diesel engine can result from a/an _____.

By far the greatest item of maintenance of the reciprocating air compressors concerns _____.

In motorships，there are two main circuits, _____.

The power factor at which a paralleled AC generator operates is usually adjusted by the _____.

When there is a flame failure in an automatically fired auxiliary boiler, the _____.

In cleaning up an oil spill, the use of straw or reclaimed paper fibers would be an example of which type of oil removal?

In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the _____.

One of the differences between a two-stroke engine and a four-stroke engine is, .

The adverse effects of burning high sulfur fuel can be compensated for by using a cylinder oil having sufficient_______________.

An automated diesel engine should normally shut down due to _____.

What is used for preventing pollution damage to the sea from ships?

Hardly had the engine started ______ the temperature of the cooling water suddenly rose up to 40℃.

Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be________

You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out?

Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____.

Tell your men ______ the rules and procedures of working when dismantling the equipment.

If a crankcase explosion occurs in a diesel engine, you should stop the engine and＿.

Surface irregularities, such as erosion and pitting on injection pump plungers, will________.

Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.

The pollution prevention regulations state that slop oil and sludge that result as part of normal fueling operations should be disposed of by ____.

When two different metals are joined to form. a closed circuit and exposed to different temperatures at their junctions _____ which can be used to measure temperature.

Prior to entering a cargo pump room, you should ensure that _____.