海船船员考试轮机部三管轮模拟题8(轮机英语)

Because of the close tolerances used in diesel engine fuel oil pumps, a worn plunger requires___________.

To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of _____ and detergency.

When starting a reciprocating pump, the inlet valve should be ____.

Air conditioning is the process of treating air to control _____ its temperature, humidity, cleanliness and distribution to meet the comfort requirements of the occupants of the conditioned space.

Increasing the speed of a centrifugal pump will result in an increase in its capacity in its capacityAnother means of increasing the capacity pump is to increase the .

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

A hot air start pipe indicates that there is _____.

The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the _____.

To prevent the spread of fire by conduction, you should _____.

If cylinder liner wear is up to maximum limits the possibility of scavenge fires will not be materially reduced until the liners are ______.

____ belongs to emergency power supplying equipments.

Diesel engine air start system check valves are opened by ________.

If a steering motor becomes overloaded, the _____.

Successful combustion inside the cylinders of a diesel engine is dependent upon _____.

The lubricating pipes and dusts should be blown out with _____.

_____ unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker.

If cooling water flow through the after-cooler is interrupted, the power output of a turbocharged diesel engine will drop because the _____________.

Routine monitoring of a diesel engine should include _____.

In discussing oil pollution, one important fact to remember is that the problem remains the same _____ heavy _____ light oil is spilled into the water.

The longer the ignition delay period resulting from improper use of low cetane fuel, the __________.

Diesel engine piston ring blow-by is usually caused by excessive ring clearance at the ring___________.

An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every _____.

Which of the following conditions may contribute to the formation of deposits on the blades of the turbocharger turbine?

If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will _____.

There will usually be summaries or daily account tables for heavy oil, diesel oil, lubricating oil, and fresh water, which will be compiled .

Which of the conditions listed would cause simultaneous high cylinder firing pressure and low exhaust temperature?

When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship.

Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the _____.

The oil was pumped up in the settle tank such a height that it _____.

If a diesel engine is smoking excessively under load, the cause could be ________.

The small end of the connecting rod is attached to the piston with a _____.

The fresh air coming in through the inner air ports, is compressed by _____ to a higher pressure.

Insufficient refrigerant in a refrigeration plant may result in _____.

When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work _____.

One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against_________.

A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?

The auxiliary engine and a.cgenerator can be connected with _____.

The volute of centrifugal pump also acts as a diffuser converting _____ into pressure head.

High-speed rotation in a centrifugal purifier can produce a force _____ the force of gravity.

Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?

_____ is the circulation and refreshing of the air in a space without necessarily a change of temperature.

The primary function of an electric motor is to _____.

The younger motorman as well as the others ___ to operate the oil separator.

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

The top piston ring is plasma coated to give the lowest wear rate to reach the goal of two-years’ with sufficient margin.

In a simple series circuit, the entire source voltage will drop across _____.

Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce_____.

The conclusion that mechanical efficiency is always _____ 100 per cent is correct.

Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?

_____ shall be provided to every oil tanker of 150 tons gross tonnage and above to record relevant machinery space and cargo/ballast operations.

A diesel engine is warmed up and white vapor is in the exhaust，this could indicate ________.

A fire starts when the following _____ factors come together.

For a L.Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will _____.

Which of the listed burning materials would be described as a class "B" fire?

In the production of freshwater from seawater through a process of heating and cooling, the cooling phase of production is usually called _____.

All of the followings are the detainable deficiencies under the SOLAS Convention expert .

in a turbocharger, inlet air velocity is increased in the _______________.

In the operation of a flash type evaporator equipped with air ejectors, the air and non- condensable gases are evacuated directly from the _____.

The purpose of the programmed purge cycle on an automatically fired auxiliary boiler is to .

The most inefficient method of voltage reduction from the stand point of power loss, is a/an _____.

Cold weather starting of a diesel engine may be made easier by .

During the dock repair, when installing the tail shaft and propeller, who should be on the spot to supervise?

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

With a _____ load the voltage and current are in phase.

If a small electric motor is immersed in salt water it should be _____(1) washed in fresh water; (2) dried in an oven

To anneal a copper gasket, you should heat the gasket .

An advantage of a helical gear pump over a simple gear pump is that the helical gear pump is capable of _____.

A fire in a pile of linen is considered to be a class _____.

To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of _____.

The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called _____.

Leaky exhaust valve will result in which of the following? (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.

Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? (1) too little cooling water; (2) too much cooling water; (3) too warm cooler water.

Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include _________.

Which cause of following will not lead to refrigeration plant short-cycle?

When sailing in cold zones, the____ should be drained of water.

When refrigerant leaves the receiver, it flows next on to the _____.

During the inspection, the starting air valves should be closed _____ the engine from turning.

When replacing a part with a spare one, we should fill in tile spare parts consume table in time and make a mark in brief for ____.

Duties shall be so organized by the chief engineer officer that the first watch at the commencement of a voyage and the subsequent relieving watches are _____ and otherwise fit for duty.

The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being _____.

The“person in the phrase ”to designate a person or persons ashore having direct access to the highest level of management” refers to ______.

Just after stopping the engine while the oil is still circulatingCheck that uniform. oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoesThe oil flow from ____ must be compared from unit; there should be a similarity in the flow patterns.

The amount of moisture in a given sample of air, when compared with the amount of moisture the air could hold if totally saturated at the existing temperature of the sample, is called _____.

The extended aeration process consists of ____ the liquor either by bubbling air through it or by agitating the surface.

The oil is drawn from a drain tank through _____, one of a pair of pumps, into one of fine filters.

Which of the following operations need to be entered on the Oil Record Book Part I? (1) Cleaning of fuel oil tanks; (2) Internal transfer of fuel oil

It is necessary to remove _____ from the cooling spaces.

It is necessary to _____ cool the various components of the machinery so that the engine can work properly.

_____ supplies pilot air to control the cylinder air start valves.

The suction - force principle of operation is a typical characteristic of _____.

Which of the routine maintenance procedure listed is required for starting air receivers?

The average pressure exerted on piston during each power stroke is termed__________.

The satisfactory operation of diesel engine exhaust valves usually depends on ____.

On a tank vessel, which of the following substances would be burning in a class "B" fire?

Condensate must be drained periodically from the air compressor receivers to prevent _____.

If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause? .

The bedplate must be rigid enough to support the weight of the rest of the engine, and maintain the crankshaft, which sits in the bearing housings in the ______, in alignment.

When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil? .

A sudden drop in diesel engine cylinder compression pressure can be caused by______.

The efficiency of turbocharge system is increased by fitting a charge air cooler _____ the compressor.

A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an ______.

In a diesel engine cooling water system, a pH of 6.0 indicates a/an _____.

The main causes of fire on board ships are _____.

A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by ______________.

Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out _____.

If the bedplate was too rigid, then as the hull flexed, the ______, which secure the engine into the ship would be likely to break, and there would be a danger of the bedplate cracking.

If the capacity of a centrifugal pump decreases gradually over a long period of time, you should replace the _____.

The amount of fluid delivered by a reciprocating pump can be regulated by _____.

Which of the listed problems can be a cause of low compression pressure in a diesel engine?

For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by ___________.

Which of the following operating features do displacement pumps bear if they are working under no-cavitation condition? (1) output is almost directly proportional to speed; (2) they are self-priming; (3) they will develop a discharged pressure equal to the resistance to be overcome, irrespective of speed.

Cavitation erosion in the cooling water system of a diesel engine usually occurs at the pump impeller, and on the waterside of the _________.

Electrically operated safety devices on auxiliary diesel engines function to stop the engine by _____.

If a refrigeration compressor will not start, the reason may be _____.

The chief engineer suggests that the second engineer _____ a dead line for handing in the work plan.

If _____ are taken at regular intervals, any unequal distribution of load will be easily found out.

An overspeed safety device is usually fitted to a generator engine for _____ in the event of overspeed.

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

Freon 12 which is used to produce intense cold is normally a ______ when at atmospheric pressure and temperature.

Auxiliary boilers are divided into several classifications, one of which is _____.

Gear pumps are _____ because they discharge a near constant amount of liquid regardless of pressure.

____ is not a part of the main switch board.

A firebox explosion in an automatically fired auxiliary boiler may be the result of ________.

In moving forward, a ship imparts forward motion to the water at the stems, this is known as _____.

The depth of the ship below waterline measured vertically to the lowest part of the hull is called ______.

The _____ of the main shaft should be measured with a _____.

On a diesel engine, fuel is delivered into the combustion space by _____.

The remaining oil in the lubricating pipes and ducts should be blown out with _____.

Movement of the pump control rack in a fuel injection system using individual plunger-type pumps .

Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?

The relief valve is located on the .

The overspeeding of the diesel engine driving an electric generator could cause _____.

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

Open the ______before starting an air compressor.

The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the .

Pumps and fine filters are arranged _____ with one as standby.

The energy for pushing this piston up can be supplied from _____, so that the piston can keep moving up and down.

Faulty operation of diesel engine fuel injection nozzles can be a direct cause of______.

New adopted regulation of master shall_____when maintaining the security of the ship.

It is very necessary that each cylinder _____ before the charged air is compressed.

If found oil when we open low oil level plug of separator, it indicates ____.

Fuel oil discharged to the diesel engine cylinder is atomized at the _______.

The indications of a scavenge fire are excessive black smoke, _____ and peeling from scavenge trunking.

The rate of heat transfer in a water-tube auxiliary boiler can be increased by .

A pyrometer is an instrument used to measure the temperature of the diesel engine_____________.

Cast iron pistons used in large propulsion diesel engines are constructed with ______.

During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?

When securing an AC generator, you should FIRST _____.

Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will .

The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner .

The load between two steam-driven alternators operating in parallel may be adjusted by varying .

We use _____ to distill fresh water from sea water.

When carrying out mooring trial, the ____ trial of the M.Eis not necessary.

If a bilge pump is able to develop vacuum, but is unable to sufficiently pump out the bilges, you would check for all of the following EXCEPT _____.

Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? .

When working on a high voltage circuit, you should always have another person present with youThis person should have a good working knowledge of _____.

If fuel is burned from only the starboard tanks, the ship will _____.

The distance between the bottom of the hull and the waterline is called _____.

Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be ______ if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.

With regards to a diesel engine crankcase explosion, the most violent is the (1) primary explosion; (2) secondary explosion.