轮机部三管轮考试模拟题2(轮机英语)

If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be .

Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?

When a clarifier is running the impurities and water collect at the bowl _____.

Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?

Oil is supplied to the cylinder wall and _____ by means of mechanical lubricators.

The development goals for a large marine engine are many often interact and in some cases even with each other.

Starting air for auxiliary engines may be taken directly from the main reservoirs or through _____.

The exhaust boilers are used to recover some of _____ carried in the exhaust gas from the main engine.

In the engine department, the _____ is looked upon to provide the leadership that is needed.

The accumulation of air and other non-condensable gases in a refrigeration system will _____.

A direct current passing through a wire coiled around a soft iron core is the description of a simple_____.

In a four-stroke/cycle diesel engine, badly worn intake valve guides can cause excessive_____.

Tube leaks in the distillate cooler of a two stage flash evaporator will result in _____.

Which of the following chemicals will be used where protection against caustic cracking is required in boiler treatment?

Constant cooling the various components of diesel engine has a number of functions except for _____.

Demulsibility of a lube oil is defined as _____.

Foaming in the steam drum may be caused by _____ in a boiler.

Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _____.

The size of ball and roller bearings can be identified by the _____.

Aboard ship, a grounded field coil in an AC motor can be determined by using a _____.

When a sudden increase in steam demand occurs from the boiler, the water level in the drum at the higher pressure will .

If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .

Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to ___________.

The capacity of a centrifugal pump can be increased by the installation of a larger diameter impellerAnother means of increasing the pump capacity is to _____.

The core item in the Oil Record Book Part I is _____, and its main content is

Prior to a ship’s departure, ____ may not always be tested.

Low compression in a diesel engine can be caused by ________.

Portable carbon dioxide fire extinguishers should be sent ashore to be recharged _____.

In which of the areas listed is a fire resulting from spontaneous combustion most likely to occur?

Critical speeds occurring within the operating speed range of a main propulsion diesel engine may be changed, or have their damaging effects reduced by a/an __________.

The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as _____.

As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: (1) secure oil to fires; (2) increase feed pump pressure.

"gauge pressure" means_____.

The hand steering is a method by which the motion of the rudder is controlled with _____.

______ does it take to change the main engine from ahead to astern?

On a large diesel engine installation, crankshaft axial alignment is maintained by the _______.

_____ clearances in the main or crank pin bearings will sometimes be indicated by loss of pressure in the lubricating system before any bearing knock is heard.

A new ocean going ship of 2000 gross tons having an inoperative oily water separator may dispose of its bilge slops by _____.

Under normal conditions, the refrigerant enters the compressor in an operating refrigeration system as a _____.

The injection may be delayed, ______ the pumps are in good order, if the fuel lines to the injection valves have not been cleared of air.

One advantage of a flash distilling plant when compared to a submerged tube distiller is .

Emulsification of oil will occur when mixed with .

A decrease in the flash point of diesel engine lube oil indicates the lube oil has become _____.

The division of kilowatt load between two paralleled alternators is determined by the _____.

The closed-loop system differs from the open-loop system by .

Air trapped in the hydraulic fluid of a steering system would be indicated by .

_____ are used for cargo handling.

When a ship is involved in an oil pollution incident in China, the ship must report without delay to .

The bearing shell generally has _____ for location and oil grooves round the center of its axial length.

While taking on fuel, you notice oil on the water around the vesselWhich of the following actions should be taken FIRST?

Impurities from the boiler water surface can be removed through the _____.

An individual injection pump is designed for variable beginning and constant ending of injectionFor diesel engines operating at constant speeds, the start of injection will____.

The Garbage Record Book, as a part of the ship’s official logbook, shall be kept on board and preserved for a period of .

In the event of a small bunker oil spill on deck occurring while bunkering, you should _____.

However, where immediate action is necessary to ensure safety of the ship, its machinery and crew, it must be taken by the engineer in chargeWhat dose “it” mean in the sentence above?

When a sudden increase in steam demand comes to normal, the drum pressure will and water level in the drum will .

When the tilting box of a variable stroke axial-piston pump is perpendicular to the pump shaft, which of the following conditions will exist?

Valve lash, or clearance refers to the ____________.

The power factor of an AC generator operating singularly is determined by the _____.

A substance found in residual fuels which tends to cause exhaust valve corrosion and grooving, is＿.

Rounds ______Everything is in good order.

After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?

According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided into two main systems, namely, the constant-pressure system and _____.

The crankcase cover should never be allowed to open for investigation when _____.

Blow-off of the relief valves of the engines cylinders may be caused by _____.

When the boiler load returns to normal, the drum pressure will rise and steam bubble formation will reduce, causing a fall in water levelThis is known as _____.

The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the _____.

The drive motor will have a brake arranged to fail-safe, i.eit will _____ the load if power fails or machine is stopped.

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?

For one or two types of engine, the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through the _____.

The flash point of a liquid refers to the temperature .

The pumps employed on board ship can be divided into two main categories i.e_____ pumps and centrifugal pumps.

Every precaution must be taken to avoid ______.

Black areas on the sealing surfaces of piston rings indicate＿.

The liquid flowing in the capillary is such that the difference in _____ readings taken before the capillary and after it is related to the oil viscosity.

The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than by weight any time when being testedBut watch-keepers are not allowed to drink any alcoholic beverage before their watch.

Before starting an air compressor, It should be _____.

Which of the following problems will occur if the needle valve in a fuel injection nozzle sticks in the open position?

I remember ______ the oil separator the day before yesterdayBut it failed again.

The fire drill must, as far as practicable, be conducted if ______.

_____ may be the first possible cause which makes the engine to lose power or slow down when it is running.

Diesel engine exhaust temperatures may be used to indicate _____.

Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component _____.

The SMS should provide for _____ ensuring that the Companys organization can respond at any time to hazards, accidents and emergency situation involving its ships.

The advantages of flash type evaporators, as compared to submerged tube type evaporators, include ______.

Which of the following types of hydraulic pumps would be used in a steering system?

International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code) is a part of .

The diameter of the crank-pins should be measured with a _____.

Which of the following problems may occur when using fuel oil with a high sulphur content?

When placed in a magnetic field, which of the materials listed will maintain the highest permeability?

Centrifugal pumps are non-positive and a fairly _____ unit.

If a camshaft-less engine has a normal injection pressure at rated speed, the injection pressure will be at slow speed.

The longer an oil fire is permitted to burn, the _____.

The fire extinguishing action of CO2 comes mostly from _____.

The____ only allows for adjustment of temperature in each room by the occupant manually controlling the air volume admitted.

If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe _____.

The piston ring grooves for a standard engine are _____.

Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by __________.

Directional intake ports in diesel engines are used to _____.

Which of the following is NOT true according to the passage?

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

The connecting rod is fitted between the crosshead and the crankshaftI t transmits the firing force, and together with the crankshaft converts the _____motion to a ______motion.

The tendency for lubricating oil to thin out at high temperatures and thicken at low temperatures will be characterized by a _____.

When order spare part, you can directly fall back on ____.

What color is used to indicate the last shot of anchor chain?

What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?

The main function of the lubrication system in to enable _____ of a film of oil between the moving parts.

A crankshaft whose center of gravity coincides with its center line is said to be _____.

There is a danger of the starting current that the windings are burnt out.

Sediment collects in a tubular purifier _____.

Manually operated band brakes may be fitted and _____ will have a brake arranged to fail-safe.

Measure _____ by means of lead wire.

Which of the followings needs not to be considered for bunkering? .

A restricted air intake to a diesel engine may result in the engine _____.

The single acting cylinder is the simplest form. where pressure is applied to the full area of the piston head to move the load through piston rod extensionThe load causes rod _____ when the drive pressure is released.

Typical marine propulsion plants include____ directly coupled to the vessel’s single large-diameter, fixed-pitch propeller.

The International Sewage Pollution Prevention Certificate (ISPP) is issued to ____.

Impurities in the fuel oil will affect the operation of the engine, which has _____ the use of separator and some other devices.

If a bilge pump failed to build up discharge pressure, you should check for _____.

When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be ____.

A marine diesel engine is started by .

According to the passage, during the tests, .

With reference to rules governing steering gear, which one of the following rules is incorrect? .

Air reservoirs are designed, built and tested similarly to _____.

The officer in charge of the engineering watch shall continue to be responsible for machinery operations, ______ the presence of the chief engineer in the machinery space.

A more sophisticated pressure reducing valve incorporates a pilot valve which controls the fluid above the valve operating piston in response to downstream pressureThe bold and italic word “which” means _____.

Which of the turbo-charging methods listed directs the exhaust gases to the turbine at fairly uniform. velocity and pressure?

Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?

____ is used to control, modulate, monitor and protect generator set.

The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called _____.

The procedures recommended for auxiliary boilers having high salinity include _____.

A ground can be defined as an electrical connection between the wiring of a motor and its_____.

Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by _____.

_____ to damage the protective coating on the inner side of the shell.

The static suction lift of a pump is the difference in elevation between the _____.

The efficiency of a flash type evaporator can be increased by .

When steam is being raised on a boiler, the water level will normally _____.

One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the _____.

Scavenging in a four-stroke/cycle diesel engine occurs during the _____.

Which of the motors for the devices listed below is fitted with an instantaneous overload relay?

Low pressure air is usually taken through _____ or pressure regulators to a low pressure reservoir supplying a ring main through driers.

In ships where the engine room is designed as UMS, temperature sensors are fitted at critical points within the scavenge spacesActivation would cause automatic ______ of the engine.

The additional mark _______ in the Classification Certificate for Machinery represents the propulsion apparatus is remotely controlled on the navigating bridge control station, and engine room is watched by duty personnel.

A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an ________.

On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from _____.

To prevent vibration damage to the fuel supply line of a diesel engine, you may use _____.

The cooler as the liquid becomes, _____.

The bearing of tailshaft sealing equipment, which adopting the oil nature circulation is hot, the reason is____.

Fires involving combustible metals are classified as _____.

For a diesel engine, individual cylinder performance is commonly determined by exhaust gas_____________.

With four-stroke engines, it takes four revolutions of the crank shaft to make _____ power stroke(s).

For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the _____.

If in doubt as to the true water level when a boiler is being oil-fired, you should _____.

The ISPS Code consists of a mandatory section-Part A, which shows .

The crank-room cover should not be opened until at least _____ minutes after the engine stops.

The opening or closing of the cylinder starting valve is controlled by _____.

Combustion knock will most likely occur as a result of using a fuel with ____.

Impurities from the boiler water surface can be removed through the _____.

In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because _____.

High firing pressures and a low exhaust temperature in a diesel engine may result from _____.