海船船员适任证书三管轮模拟试题1(轮机英语)

Which of the listed devices could be used as a substitute for a ring grooving tool?

Which of the following statements is correct for the design and installation of diesel engine cooling water systems?

The discharge head of a centrifugal pump will vary directly with the _____.

Ignition failure in an automatically controlled auxiliary boiler could be caused by .

A moving object will not accelerate or decelerate ______ a force is applied to it.

Medium survey should be carried out _____ times during the valid period of the certificate.

The abbreviation ‘M/E’ is used to represent the .

A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an _____.

In a ordinary cargo crane, _____ is fitted to rotate the crane.

Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?

During the diesel engine running, the water level of F.W expansion tank should normally kept in the ____ level of glass tube.

Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump is a result of _____.

Low cylinder compression pressure and a high exhaust temperature may indicate ________.

A number of cylinder liners are enclosed in one cast iron casing to form. a _____.

Which kind of vessel is not required to comply with the ISM code until 2002?

____ continuously extract the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity measuring track.

We still do not know ______.

If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, _____.

If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.

If diesel oil in this tank is used, the _____ of the oil must not exceed 120 degree F.

All member of the engineering watch shall be familiar with assigned watch-keeping dutiesIn addition, every member shall, with respect to the ship they are serving in have knowledge of Ⅰthe use of appropriate internal communication systemsⅡthe use of GMDSSⅢthe escape routes from machinery spaceⅣthe number location and types of fire-fighting equipment in the machinery spaces.

Valve cages are used on some large diesel engines to ____________.

During which of the listed piston stroke of a four-stroke/cycle diesel engine, is the piston moving downward?

In the four-stroke engine, it takes _____ to make one power stroke.

Combustion knock occurring in a diesel engine can be caused by _____.

If you increase the clearance between a valve stem and rocker arm, which of the listed condition will occur?

The correct tightening is obtained by use of _____ to measure the extension given to the bolts.

A water jacket is placed around the exhaust manifolds of propulsion diesel engines to__.

Which of the following should be recorded in Oil Record Book Part I (machinery space operation) ?

Proper filtering and straining of fuel oil is important because the _____.

The quantity of cooled air delivered by an air conditioning unit should _____ the sum of the quantity of air re-circulated to the unit and the quantity mechanically exhausted.

When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be _____.

To maintain design discharge pressure from a centrifugal pump, the design clearance must be maintained between the _____.

One of function of diesel engine lubricating oil is to _________.

The amount of chloride content in the water of an auxiliary boiler can be reduced by .

Which of the listed conditions can cause lacquer to be deposited on a piston skirt?

An alarm device inserted between the deaerating tank and the expansion tank can notify the on-watching crew that .

A viscous damper, as used on a marine diesel, is a sealed precision built device which dampens the torsional vibrations in the _____.

White smoke exhausting from an operating diesel engine may indicate _____.

Theoretical perfect combustion in a diesel engine yields by-products of _____.

Which of the fluids listed is normally used to condense the primary refrigerant in a shipboard central air conditioning system?

Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from _____.

When an auxiliary boiler is panting and emitting black smoke, you should ______.

The water level in a steaming auxiliary boiler will always _____.

Scuffed cylinder liner wearing surfaces in a diesel engines can result from ________.

In the navigation____ cause the shafting over load easily.

The company which is defined in the ISM Code means______.

In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ______.

Injection lag in a diesel engine may be caused by_______.

The interface between the liquid seal (water) and the oil should be positioned _____ possible to the bowl periphery.

When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by ____________.

The diesel engine is a type of _____.

The viscosity regulator controls _____ in order to provide oil at the correct viscosity for combustion.

If no gaskets are used in the piping joints of a Freon system, the joints must be .

When paralleling two AC generators, the frequency of the machine coming on-line, immediately prior to closing its breaker, should be _____.

When making entries in the Oil Record Book, all quantifies should be _____.

If both the "high level" and "low level" alarms come on for the same address of a centralized control console, the most likely problem is a/an _____.

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

Sea water is not used directly as a coolant because of _____.

The boiler is fired _____ the demand for steam exceeds that available from exhaust gas heating.

The ____ is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

Such an engine frame. helps _____ the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.

____ belongs to emergency power supplying equipments.

Cooling enables the engine metals _____ their mechanical properties.

A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to _______.

Early models of the flash-type evaporators used a separate shell-and-tube heat exchanger as the air ejector condenserMore recent models use a combined air ejector condenser with the__.

Which of the following conditions is realized by the turbo-charging of a previously naturally aspirated diesel engine? .

In order to limit the introduction of alien species by ship, ____ was adopted on 13 Feb, 2004 at the IMO.

If an auxiliary diesel engine frequently stalls, the trouble may be caused by ___.

Which of the following firing order may be used for an 6 cylinder engine?

The rim of the piston may contain cut-out portions to accommodate _____ when they open.

In its simplest form. the pressure reducing valve is opened or closed by _____ which is balanced by the downstream pressure acting on a diaphragm.

Which of the listed problems could produce a high absolute pressure within a flash type evaporator?

One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to _______.

The cast iron _____ for the cross-head are attached to the top section and seal off the crankcase.

Why are some diesel engine cylinder liners plated on the wearing surface with porous chromium?

The frequency of an AC generator is adjusted by means of the _____.

What is the crank angle between any two crank throws in the firing order of a four-stroke/cycle, in line, eight cylinder diesel engine?

In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?

Disastrous explosions have been caused by accumulations of oil or oil vapour in air lines not drainedAccording to the above sentence, which of the following statements is true?

The compressor suction line conveys the refrigerant vapor from _____ to _____.

An emergency diesel generator should automatically shut down in the event of ___________.

Once a scavenge fire is detected, fuel should be shut off from the affected cylinders and cylinder lubrication increased _____ the risk of seizure.

If the detergent type lubricating oil being used in a diesel engine is black, the oil ___________.

The viscosity regulator controls the _____ of the fuel oil in order to provide the oil at the correct viscosity for combustion.

Which of the listed cylinder liner surface conditions indicates proper lubrication?

Cylinder wall temperature, fuel oil supplier, and oil passage _____.

____ are supplied by main switchboard directly.

The basic process of biological sewage treatment consists of the liquor either by bubbling air through it or by agitating the surface.

If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measuring the engineer on duty should ____.

In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in _____.

The class of fire on which a blanketing effect is essential to extinguish the fire is _____.

Heavy fuel oils generally have an upper average ash content of 0.1% by weightWhich of the following conditions could be expected if the ash content increase above this amount?

Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?

Lube oil pumps taking suction from the sump of most small marine engines are usually _____.

In a central cooling system, used in some modem ships, sea water is supplied to cool _____ which will circulate to other individual cooler, greatly reducing the corrosion problems.

An interlock in the remote operating valve line stops the valve _____ when the engine turning gear is engaged.

_____ is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.

A grease gun is generally used to lubricate a _____.

As its temperature rises, the volume of fuel oil in the tanks will _____.

In a compression refrigeration cycle, the temperature of the liquid refrigerant experiences its greatest decrease in the_____.

The bearing cap and shell are replaced and tightened up until ______.

How often should the lubricating oil of a diesel engine be changed?

When separating lube oil separator, the optimal separating quantity is ___ of the rated quantity on name plate.

Which fire fighting agent has the greatest capacity for absorbing heat?

For a flash type evaporator, the seawater heater will have to maintain a enough temperature to minimize scale formation.

Which one of the followings may not be checked before engine starting?

As a watch officer when bunkering, which of the following does require his individual attention?

Critical speed in diesel engines occurs when engine torque pulsations become _____.

The three basic parts of any eductor are the nozzle, the suction chamber, and the ______.

Please draw out a 0.l mm shim between the two halves of the bearing _____ the clearance.

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

Hydraulic pumps most commonly used in steering systems are of the ______.

In the fire main system, quick cleaning strainers are located at the _____.

Why will a turbocharger diesel engine produce black smoke if excessive additional load is applied too quickly?

In the emergency alarm signals, if the alarm or whistle two long sounds followed by one short sound for 1 minute, it is the ____ emergency.

While inspecting the steering system at sea, you should check for _____.

The current flowing first in one direction and then in another is called_____ current.

The _____ is a measure of the phase difference between voltage and current and is expected as the cosine of phase angle.

Anchor _____ are used in some installations where the cable lifter rotates about a vertical axis.

Pistons may be made in _____ in order to keep the weight down for balancing purposes at high speed.

In a direct expansion type multi-box refrigeration system, the compressor is set up to cycle on and off by the_______.

When a hydraulic vane pump is working, which of the following is in contact with the vanes? (1) the rotor; (2) the internal surface of the housing; (3) the external surface of the housing.

A cargo hold has been determined to have a relative humidity of 80% and a dry bulb temperature of 80 ℃ and a dry bulb temperature of 85℃.When the hold is sealed and the dry bulb temperature decreases, the relative humidity in the space will _____.

During the dock repair, each sea valve must be disassembled, cleaned and ground wellBefore it reassemble the sealing surface between the valve and the valve seat should be checked by ____.

Factor influencing the position of the interface between the liquid seal and the oil in a purifier is _____.

The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?

The main purpose of the piston oil scraper rings is to _____.

The piston supporting body is mainly subjected to _____ stress.

When does auxiliary burner of incinerator put into operation? Istart incinerator when it is cold IIthe sludge for dealing with is little IIIthe sludge for dealing with is large IVthe water and impurity in sludge are too much Vthe temperature in incinerator is low VIdealing with little solid rubbish

Which of the general advantages listed does the electrical pyrometer have over the mechanical pyrometer? .

_____ will be used to blow away the combustion products from the tube surfaces.

Proper operation of the main engine reduction gear set requires the operation to monitor ________.

The primary purpose of oil control rings on a diesel piston is to________.

The governor of a generator engine is to _____.

The International Air Pollution Prevention Certificate (IAPP) is issued to ____.

One cause of high head pressure occurring in a refrigeration system can be _____.

Which of the following statements is true concerning simple parallel resistance circuits?

Combustion knock occurring in a diesel engine can be caused by _____.

A fire involving aluminum powder would be a class _____.

Thermostatic expansion valves can be adjusted for _______

Basically the bedplate consists of two ______, which run the length of the engine.

If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase＿.

The designed capacity is 25 tons a day, but the fresh water generator can only _____ 22 tons at present.

0111The transmission system is the means ______ the movement of the rudder is accomplished.

Wake varies considerably with the form. of the vessel, but, generally speaking, the bluffer the ship _____ the wake value.

Which of the following statements represents an advantage of an electromagnetic clutch?

A switchboard for an AC electrical system requires the use of which of the following devices _____.

With a purely _____ load the voltage and current are in phase, giving a power factor of one.

The demisters installed in a flash-type evaporator serve to __.

The heated feedwater entering any flash chamber of a flash-type evaporator will .

Which of the following pumps is most suitable for an oily water separator?

The alternating current generator supplying a load has a voltage drop resulted from the loadWhen the load has a lagging power factor this voltage drop _____.

Ship fire-fighting organization includes _____.

Before the seas get rough, it is a good safety practice to _____.

If scavenge box should be hot, _______would occur.

Combustible material stored in a compartment adjacent to a compartment where there is a fire may be ignitedThis ignition can occur by _____.

The required amount in the change of speed necessary before a governor will make a corrective movement is known as _____.

A waste heat boiler is installed on some diesel propelled vessels to _____.

After ensuring that the _____ is correct the bearing clearance should be checked.