轮机部三管轮考试模拟题10(轮机英语)

Bearing knocks are likely to occur from _____.

In a three-phase circuit, the phase voltages are _____.

Which of the following will take place if the clearance of the main bearings are excessive?

The minimum fuel oil delivery pressure required for diesel engine injection depends primarily on the_________.

_____ or air venting arrangement is fitted to the fuel supply passage.

In the management of the shafting, because____ carry heavy load and caused high temperature easily, it should be paid attention.

In a series circuit, which value will remain unchanged at all places in the circuit?

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

Any carbon built up on surfaces must be washed away by _____ additives and held in suspension by a _____ additive.

Most large, low-speed, main propulsion diesel engines use duplex lube oil strainer to _____.

The amount of fuel injected in a particular time, or degree, of crankshaft rotation is termed _____.

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

With Variable Injection Timing the start of injection may be _____ as the engine load is reduced.

If air at 95℃ dry bulb temperature and 50% relative humidity is conditioned to 75℃ dry bulb temperature and 50% relative humidity, it is an example of _____.

From viewpoint of practice, it is sometimes important to detect abnormal happenings in the running gear by .

Oil water separators are used to ensure that ships don’t discharge oil when ____ bilge water.

The temperature of a refrigerant gas is the highest _____.

_____ water is more expensive than fresh waterIt has high specific heat and low viscosity.

Air that may enter a refrigeration plant tends to collect in the _____.

The frequency of an alternator is controlled from the main switchboard by adjusting the_____.

Which of the lists forms of heat transfer, if any, is illustrated by the flow of combustion gases through a boiler?

If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be_____.

The piston moves up and down, thus causing the rotational movement of the _____.

When the follower is on the base circle of the cam, the pump plunger is at the _____ of its stroke.

Brushless generators are designed to operate without the use of_____.

V.I.Tmeans _____.

In a four-stroke engine the camshaft rotates at _____.

Oil water separators are used to ensure that ships dont discharge oil when pumping out _____.

The is employed to warm up a large diesel engine before its starting.

We have just repaired the motorRemember ______ to it during your watch.

A combination combustible gas and oxygen indicator is an instrument that measures the_____ of both combustible gas and oxygen; each is indicated on a separate meter.

_____ usually helps to induce air movement to assist combustion.

____ are located on the road panel of main switchboard.

If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should _____.

The gear and screw pumps are classified as _____.

The exhaust gases for a new engine should be _____ when the engine operates under full load.

In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary? .

If the diesel fuel vapors present are within the flammable range _____.

In the event of minor emergencies when the machinery spaces unattended ____ will be informed of malfunction in the machinery by his cabin monitor.

_____, so they are widely used on board ship nowadays.

Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of _____.

The blower type crankcase ventilation system ________.

____ are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.

____ is electricity that is flowing where it’s not supposed to through water, fittings on your boat, wet wood, damp surfaces, etc.

A burner responsible for producing black smoke in an automatic auxiliary boiler, would be caused by a _________.

The ______is not a component of an oil separator.

The effective pump stroke of an individual port-and-helix fuel injection pump is determined by the _______.

Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?

The pitch ratio of a propeller is the mean pitch divided by _____.

Ammeter is to measure the _____.

The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of _____ rpm.

The SMS should provide for specific measures aimed at promoting the reliability of equipment or systems _____ may result in hazardous situations.

During the power stroke of a four-stroke/cycle diesel engine, most of the side thrust of a trunk-type piston is absorbed by the_____________.

Engine displacement is equal to the cylinder _____.

What will be the phase angle relationship of a six-pole, three-phase, rotating field generator _____.

Rotating flyweights acting against spring pressure make a simple type of _____.

If you burned your arm on a bare steam line, the most effective immediate treatment would be to______.

If one hydraulic pump of an electro-hydraulic steering unit falls, the vessels steering can be initially and best maintained by using the _____.

Which of the following fuel oil characteristics establishes the danger point when transferring, pumping, and firing procedures are concerned?

An AC synchronous transmission type remote steering control system consists of a _____.

We’ve tried many ways, but all in vainOnly in this way, _____ the problem, I’m sure.

Which of the following statements describes the relationship between viscosity and specific gravity?

The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a _____.

A piston is said to be at top dead center when it is ______.

Which bearing will carry the load on two small points diametrically opposite to each other?

______ conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.

Which of the valves listed should be used either in the fully opened or the fully closed position?

However fast or slow the combustion rate, it is still a ______ between carbon, hydrogen, sulphur and oxygen that releases heat.

Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed _____.

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

______ during the last repair?

The refrigeration system low pressure cutout switch is actuated by _____.

Ambient temperature is the _____.

The best tool to use for removing the carbon ridge at the top of an engine cylinder, prior to removing the piston, is to use＿.

When under maneouvring conditions with the machinery being manually operated the control unit or console should be _____.

Intake air flow from a diesel engine turbocharger is directly proportional to engine______.

The operation of paralleling two alternators requires the voltages to be _____ and also in phase.

Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and _______.

Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by _____.

The operation of _____ two alternators requires the voltages to be equal and also in phase.

A _____ boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.

The frequency of the alternating current generated by a synchronous generator is governed by the speed and the .

“Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired, or at least patched up temporarily until the next stop.” This sentence means that ______.

Once a fire is detected the engine should be slowed downOn no account _____.

The safety valves are mounted in pairs to _____ the boiler against overpressure.

Which of the following should always be checked prior to starting a diesel engine?

The valve that prevents water from backing out of the boiler into the feed line is the______.

The thermal expansion valve controls the amount of refrigerant that is allowed to flow to the _____.

If sludge accumulates on the underside of a diesel engine piston, it will＿.

Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to _____.

The load sharing characteristics of two diesel generator operating in parallel are mostly dependent on their governor _____.

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

Refrigerant is normally sub-cooled in a refrigeration or air conditioning system condenser to _____.

Before the sludge in a purifier is ejected, .

A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to _______.

Refrigerant is circulated through a refrigeration system by the _____.

_____ are commonly used in mechanical-hydraulic governor to sense engine speeds.

Increased air _____ will raise scavenge efficiency and allow a greater mass of air to be compressed; more fuel may now be burned giving an increased power.

Head tank should be used to remove _____ from cooling water.

In an operating diesel engine, pre-ignition can be caused by _____________.

In slow speed two-stroke engines, the fresh air entering begins when and stops as .

The pump discharge pressure will be considerably higher than the pressure at the _____.

What determines the number of events occurring in a cycle of operation in an internal combustion engine?

A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter methodTherefore, the meters should be connected with_____.

The function of a lubricating oil is _____ to lubricate the running surface _____ to carry away a great deal of heat.

Significant retardation of a diesel engine fuel injection timing will result in ________.

Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil? .

Wear occurring at the tips of the reduction gear teeth is usually the result of ______.

Scavenging is _____ of exhaust gases by blowing in fresh air.

The ignition quality of diesel fuel is indicated by its＿.

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.

The bilge system has been performing well; however, the aft starboard engine room bilgewell suddenly fails to be pumped outWhich of the following should be done first to determine the cause?

The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine’s _____.

Excessively worn, or polished ends on a diesel engine valve spring, indicate______.

High cylinder firing pressure, accompanied by low exhaust temperature, can result from ___.

Reheating a hardening component to a temperature lower than the hardening temperature and then cooling it is known as .

If a used lube oil analysis indicates excessive fuel dilution, the lube oil should be ________.

When measuring AC current flow, you must always connect the meter _____.

The difference between Fixed pitch propeller (FPP) and Controllable pitch propeller (CPP) is in that______ .

The lube oil to lubricate the surfaces of the cylinder liners is spread over by the _____.

Emulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are _____ or if any soldered joints exit.

_____ are more suitable for large quantities at low pressure.

The International Management Code for the safety operation of ships and for Pollution Prevention is referred to as .

The follow-up gear on an electro-hydraulic steering gear .

A sight glass is installed in the liquid line to indicate the condition of the refrigerant charge and may also indicate the _____.

A generator is prevented from becoming motorized by the use of a/an _____.

During the watch at sea ____ should be logged or recorded in the engine log book.

In a diesel engine, when the fuel is injected into the cylinder, .

A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a ______.

Fuel is admitted to a diesel engine cylinder through the _____.

In the M.Emooring trial, the starting trial is carried under ____.

Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?

Cooling _____ the engine metals retain their mechanical properties.

According to the way the steering gear is operated, the steering gear may be divided into: hand - steering, _____ and automatic steering.

The simplest method to use for determining if a centrifugal pump is operating as designed, is to _____.

The crankcase of many diesel engines are kept under a slight vacuum by the _____.

Scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished_________._

_____ belongs to the anchor handling equipment.

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

Which of the following statements concerning the water tube and fire tube boilers is not true?

Which of the conditions listed will cause a refrigeration compressor to run constantly without simultaneously decreasing the temperature in the refrigerated space?

Routine maintenance of lead acid batteries should include _____.

A(n) _____ is a mechanical attack on the metal surface which may be due to a disturbance in the flow of the water over the blade of the propeller.

The cetane number rates fuels for diesel engines according to its ＿.

If the needle valve in a fuel injection nozzle sticks open _____.

When attempting to restart a warm high-speed engine, which of the following reactions can you expect?

A dirty fuel oil filter is can be detected by ________Ⅰ.fuel oil analysis Ⅱ.observing the pressure drop across the filter

Which of the following procedures decreases the total dissolved solids concentration in the water of an auxiliary boiler?

The process to remove exhaust gases by blowing in fresh air is called _____.

When to remove scale from the cooling spaces, acid solution _____ in the system can be tested from time to time by putting some on to a piece of lime.

The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.

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

When the bearing becomes dry from lack of oil, the motor shaft may heat to ______ an extent ______ it welds itself to the bearing.

Thermostatic expansion valve are _____.

Which of the following operating procedures should be carried out immediately after any diesel engine is started?

In a radial piston pump, reversal and control of fluid flow are accomplished by moving the _____.

Hot gas defrosting uses the hot gas from _____ to defrost the evaporator.

A diesel driven emergency generator is prevented from being paralleled with the ships service generators by _____.

Where tanks are arranged for either oil or ballast __ must be fitted in the pipe so that only the ballast main or the oil transfer main connected to the tank..

The pour point of lubricating oils is affected the most by which of the following?