轮机部三管轮考试模拟题8(轮机英语)

It is well known that good lubrication will _____ the bearings from becoming overheated.

Capacitance is the property of an electric circuit opposing a change in the _____.

For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an _____.

On the top of the cylinder is mounted the cylinder cover which is pressed onto _____ of the cylinder liner by means of nuts and studs.

The water level showing in a boiler water gauge glass is usually _____ during working.

A solenoid valve used in a refrigeration system should be installed .

Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?

Charging-air pressure increases if there is incorrect combustion and drop in the _____ of the diesel engine.

_____ is fully floating in both connecting rod small end and the piston skirt.

Which one is not the component of a typical, marine pattern self-contained unit?

If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump _____.

If you detect oil in the water around your vessel while discharging fuel, the FIRST thing to do is_____.

In a vapor compression refrigeration the evaporating pressure is maintained constant by the action of the _____, which removes vapor from the evaporator at the same rate at which it is formed.

During the watch keeping at sea, at appropriate intervals inspection should be made of ____, auxiliary machinery and steering gear spaces by the duty engineer.

Turbulence is created in the cylinders of a diesel engine to ________.

Under which of the listed conditions can the engine room retake the throttle control from the bridge_____.

An increase in the heat load to a refrigeration system will cause _____.

A compound gage is used to measure _____.

As for a hydraulic vane pump, which of the following is in contact with the vanes during working: (1)the rotor; (2)the pump shaft; (3)the external surface of the housing.

A(n)____ is the documentary attestation for the delivery of stores and spare parts.

Hydrocarbon vapors are usually detected by the use of the _____.

Dual electro-hydraulic steering units usually operate _____.

The load rating of an A.Cgenerator is determined by the .

If the head pressure of a reciprocating refrigeration compressor is excessive, _____.

If liquid freon should come in with your skin, you should .,

The gear, screw, and vane pumps are all classified as _____.

Because the expansion valve is just ______ way open, the refrigerant is under low pressure in the evaporator.

Waste oil should .

The color of the flame on a halide torch without any refrigerant present is _____.

Concerning the incinerator’s operation, which of the following is not correct?

Christopher Columbus ____ eighteen years ____ planning for that wonderful voyage which he made across the Atlantic Ocean.

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

Late fuel injection in a diesel engine is indicated by low firing pressure with _________.

A probable cause for a turbo generator tripping out on overspeed is a sudden .

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

Diesel oil may be used to cool _____ of a diesel engine.

Dirt should not be allowed to contaminate a grease lubricant because the _____.

The crankpins and journals were machined and matching holes bored in the webs, which were slightly ______ in diameter.

The compressor in an air-cooled condensing refrigeration system is short cycling on the high pressure cutout switch.

The diameter of a piston is usually less at the crown than at the skirt, in order to _____.

The reversing cams of some four-stroke/cycle diesel engines are brought into position by ________.

The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.

Because the flow rate of supply water pump is too large, oily water separator does not work wellWhich of the following is not the reason?

It is often necessary to put an engine into _____ service with one or more cylinders cut out, or with a turbocharger secured.

If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST ___________.

Oil is supplied to the crosshead using a swinging arm or a _____ and is sometimes boosted in pressure to and efficient lubrication.

When considering the lowest fuel system operating temperature, _____ are important.

Positive displacement, helical gear pumps are well suited for pumping oil because .

One of the advantages in the use of a dry liner over a wet liner is________.

The structural members of the hull extending in a fore and aft direction are called _____.

Which of the following statements is correct concerning a typical shipboard multi-coil refrigeration system?

Which of the listed design features is found in an exhaust valve and NOT in an intake valve?

Gear-type flexible couplings are often used in diesel engine drive trains because they_______.

It is abnormal that when the engine is being turned by the turning gear or by hand, _____.

Which of the following terms represents the form. of heat removed from the refrigerant in the condenser of a refrigeration system?

A double suction centrifugal pump impeller has been installed in the reverse direction, and will _____.

______, the second one will start automatically.

In many installations basket strainers consist of a cylindrical container in which a perforated metal or wire basket is suspendedThe bold and italic word “which” means _____.

In a four-cycle diesel engine piston blow-by can result in increased_______.

Which of the following devices is a common basic element with nearly all mechanical governors?

Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air?

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

When does auxiliary burner of rotary nozzle incinerator begin to work? Iwhen igniting IIthe sludge for dealing with is too much IIIbefore stopping incinerator

The air compressor pumps air to the ______.

A common trouble with the fuel pump plunger or fuel valve spindle is _____.

Which of the following methods might be used as the treatment on emulsified oil? .

The main advantage of improved Simplex tailshaft seal are____.

Which of the following is wrong about operation of oily water separator?

The crankcases of many diesel engines are kept under a slight vacuum to _____.

Thermal energy in transition is also referred to as _____.

An auxiliary reservoir for starting auxiliary engines should be kept at _____.

If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two-stroke/cycle diesel engine will develop approximately_______.

The water level of an exhaust gas boiler which is independent of the auxiliary boiler and just as the extra heating surface of it ____.

When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water _____.

W.H.R stands for _____.

A reciprocating air compressor is running roughly and vibrating excessively, indicating that the _____.

Moisture is removed from a refrigeration system by_____.

Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of ____.

In the condenser, the hot, high pressure refrigerant gas is cooled by the sea water and becomes_____.

Statutory survey could be divided into two kinds, they are ____.

A disadvantage of a two-stroke/cycle diesel engine is_____________.

If you have to abandon ship and enter a life-raft, your main course of action should be _____.

Engine parameters shall be corresponded to NOx Technical FilesThis is required by ____.

To avoid scavenge fires _____ the engine timing and equipment maintenance should be correctly carried out.

Remote control means that the system is being controlled by the operator who is situated _____ from the system.

Which one is not the personal safety equipment?

The bore of a diesel engine cylinder describes the _______.

The ship security assessment is an essential and integral part of the process of developing and updating______.

On board supply vessels, a centrifuge is normally used to purify______.

A level gauge for a tank is to _____.

Now that the valve is not worth _____, I suggest it _____.

The frequency output of an operating alternator is controlled by the _____.

Most solenoid valves are actuated by _____.

After resolving the trouble of main power supply, main switch of emergency generator should____, if power supply is refreshed.

A crankshaft whose center of gravity coincides with its center line is said to be______Istatically balanced IIdynamically balanced

Which of the following methods is normally used to control the temperature of air distributed from individual cooling coils in an air conditioning system using a chilled water circulation system? .

An increase in the air inlet manifold pressure of a diesel engine will result in a/an _____.

The installation and provision of fire fighting equipment is mainly subject to .

Operating conditions in the crank chamber are very _____ those in the cylinder.

After-cooling of a turbocharged diesel engine will result in ________.

Accidental flooding of the engine room bilges by the bilge main is prevented by .

Overload protection on hydraulic system is provided by the use of _____.

If the discharge valves on a refrigeration compressor are leaking badly, the compressor should _____.

When is dock survey carried out?

Close the ______.

In the suction stroke, the crankshaft is rotating clockwise and the piston is moving _____ the cylinderThe inlet valve is _____ and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.

What function is provided by the crankcase ventilation system on some diesel engines?

Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?

Higher than normal temperature air passing through the intake of a diesel engine will result in________.

The first requirement for logical troubleshooting of any system is the ability to _____.

The size of the discharge ring used for the efficient operation of a disk type purifier is dependent upon the ___.

Once a scavenge fire is detected the engine _____.

Let H ______ the quantity of heat which has been converted into mechanical work.

The _____ can tell us how much heat we can get from the burning of an oil.

A dry-type spark arrestor removes sparks from a diesel engine exhaust by .

A diesel generator has just been paralleled with an AC turbo-generator, but the load can not be properly divided .This could be caused by____________

____with various arrangements of barrels are the usual mooring equipment used on board ships

Because of the high loads the bearing material is a tin- aluminum alloy bonded to a steel shellThe crosshead pin is highly polished to a ______.

_____ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?

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

The ISM Code is a part of ____.

The _____ of the lubricant should be sufficient to hold the film together, but it should allow the lubricant to flow easily.

Modem engines _____ exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.

Before welding is permitted on a fuel tank, it must be certified or declared .

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

To determine if the lube oil filter elements need changing, _____.

The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between _____.

A separate piston cooling system is used _____ any contamination from piston cooling glands to the piston cooling system only.

Care must be taken to condition the ______ in the boiler to prevent scaling, and corrosion, which can weaken the pressure vessel.

Who is in charge of the auxiliary engines?

Under manoeuvring condition the main engine may run on _____.

Before the oily water separator put into operation, it should be ____.

The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?

The starting of a marine diesel engine is generally carried out with the assistance of _____.

If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will _________.

Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?

In a four-stroke/cycle diesel engine, the camshaft rotates at _____.

When anchoring in open anchorage, chief engineer should consult with captain _ _ .

Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger? .

When installing a hydraulic hose, which of the following precautions should be taken?

The double bottom in a vessel is a space comprised of .

The quantity or condition which is measured and controlled is known as the __________.

on board ship are used to control and distribute the electrical energy generated by generators.

As to the bearing, of the following, which statement is not true?

The temperature of the fuel oil received during bunkering operations is critical in determining the________.

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

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?

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

The words such as quantity, grade, viscosity and specific gravity should be in the _____.

A class "C" fire would occur in _____.

A salinity indicator is used to determine the _____.

When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?

______, we continued lifting out the pistons.

______ is an opening for supplying seawater to condensers, pumps, etclocated in the hull below the waterline and having means for the attachment of associated piping.

Faulty operation of diesel engine fuel injection nozzles can be directly caused by _________.

When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the _____.

The unit "hertz" is equivalent to _____.

Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause _____.

Cylinder liners from older lower powered engines had a uniform. wall thickness and the cooling was achieved by circulating cooling water through a space formed between _____.