Care and cleanliness are required when installing diesel fuel filters _____ .
Care and cleanliness are required when installing diesel fuel filters _____ .
You may improve a vessel’s stability by ____.
In using reduction gears to obtain efficient propeller speeds,( ).
The final calculation method of the_____ and how to award compliance (or penalize non-compliance) has not yet been determined.
In general, the larger the propeller diameter, the ______ the propeller efficiency and the ______ the optimum propeller speed referring to an optimum ratio of the propeller pitch and propeller diamete
Of all types of commercial internal combustion engines now built, which one usually gives the best performance, and hence it is?
Which of the following can be obtained by means of an indicator card?
In four-strokes engine, the cycle of events is completed in four strokes of _____.,
Two-stoke engines invariably have _____to admit air when uncovered by the descending piston.
The satisfactory operation of diesel engine exhaust valves usually depends on ( ).
In( )the incoming air passes over the piston crown then rises towards the cylinder head. The exhaust gases are forced before the air passing down and out of exhaust parts located just above the inlet
When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will( ).
The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine’s _____
The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the _______.
If a speed of a turbocharged diesel engine is maintained constant as the load on the engine is increased, the speed of the turbocharger will _____.
Pistons may be made in _____in order to keep the weight down for balancing purposes at high speed.
The sealing rings are in four parts and pressed together around the piston rods by means of _____ .
Main bearings are required to support the crankshaft at each _____.
The external circumference of a pair of main bearing shells is slightly ______ that of the bore of the housing which receives them.
The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of ____.
Increasing the temperature of a fuel will reduce its ______.
The amount of fuel delivered by a unit injector is controlled by the____.
The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as ____.
The viscosity of an oil is a measure of its_____.
In a common oil cooler circulated by sea water, the oil is at a pressure _____than the sea water.
Expansion (Head) tank should be used to remove ____ from cooling water.
Because the circulating water is in a closed loop, ___ is installed to cater for expansion and contraction of the water at different conditions of operation.
What is head tank in the closed cooling water system used for?
About the jacket water, that of the auxiliary engines usually is circulated by _____ pumps, and the main engine usually _______.
In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to_____ .
______ engines may only require starting valves to be fitted to one bank of cylinders.
From the _____, the basic functions are available, such as starting, engine speed control, stopping, reversing, and the most important engine data are displayed.
When monitoring diesel engine performance, the most useful instrument to use is the______ .
The crankcase cover should never be allowed to open for investigation when _____ .
The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ( ) .
Gases are heated in the furnace and pass upwards through______, which offer a large surface area to the radiant heat of the furn
The correct procedure for giving an auxiliary boiler a bottom blow, is to begin ( ) .
The amount of chloride content in the water of an auxiliary boiler can be reduced by _______.
The defective place in the furnace should be ( ) with fire bricks.
Before blowing tubes in a boiler equipped with steam soot blowers, you should _______.
Failure of the burner flame in an auxiliary boiler would probably be a result of ( ) .
Centrifugal pumps are non-positive and a fairly ______unit.
The pressure of a liquid leaving the pump can be referred to as the ( ) .
The volute of centrifugal pump also acts as a diffuser, converting _____ into pressure head.
The bilge system has been performing well; however, the aft starboard engine room bilge suddenly fails to be pumped out. Which of the following should be done first to determine the cause?
When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be ______.
In the process of ___, liquid changes into gas.
The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the__________.
How to reduce the noise caused by the flowing air in the air duct?
Which of the equipment listed is most effective in processing bilge slops for overboard discharge?
If the high PPM alarm is actuated on an automatic O.W.S.(油水分离器) What should happen?
The pressure difference of the gauge on the oily water separator increases greatly, the reason is( ) .
Bacteria which live _________ are said to be aerobic.
_______are required to remove small quantities of water from a much larger amount of oil. Additionally it must separate solids.
_____ can cause oil flow from water outlet of the oil purifier.
The condenser in an evaporator is cooled by________.
In a flash evaporator, heated water under pressure is converted into vapor by suddenly ________.
Under normal operating conditions, the rudder is hydraulically locked unless ( ) .
Special thrust devices are provided on ships to improve their ________at zero ship speed when the rudder is relatively ineffective.
Hydraulically, servo-operated, automatic, change over valves, utilized in a two ram hydraulic steering gear, serve to ______.
If a heavy sea strikes the rudder, the shock is transmitted through _____to the rams, this cause a sudden increase in oil pressure in one of the cylinders
In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon ____
With a purely ______load the voltage and current are in phase, giving a power factor of one.
Possible phase relationships between voltage and current in an alternating current circuit include which of the following conditions?
An alternator switchboard has a synchroscope and synchronizing lamps. If the synchroscope is broken, which of the steps listed is the most essential before an alternator can be paralleled with the bus
The emergency generator or emergency battery is connected to( )on most large ship.
The main generators are connected to _____ .
____ is not installed on the main switchboard.
Which of the following devices are protected from being motorized by a reverse-power relay?
The main difference between a motor control circuit containing low voltage protection and low voltage release is that the latter contains ____.
A resistance in a circuit of unknown value is to be tested using the voltmeter/ammeter method. Therefore, the meters should be connected with ____.
Bourdon Tube is probably the most commonly used ____ measuring instrument.
Which of the listed devices is used to measure pressure and convert it to an electrical signal?
Temperature sensors of all types are normally mounted in a well, or pocket, when used in pipelines. Why?
In the event of a failure of the pneumatic control system, a multi-element feed water regulator is designed operate as a______.
An interlock in the remote operating valve line stops the valve _____when the engine turning gear is engaged.
Remote control means that ______.
During the watch keeping at sea, where situations occur in the machine space which may affect the speed, maneuverability, power supply or other essentials for the safe operation of the ship, _____ sho
The order “bow thrust stop” means ____.
The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to ______.
Using a file without a handle may result in ____.
The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to _____.
In which of the following areas of a crosshead engine is a permanently connected fire extinguishing system required?
If circumstances permit, how should low expansion foam be applied to oil burning in the bilges of the engine room?
A carbon dioxide fire extinguisher has been partially discharged, and should be immediately ____.
Which kind of extinguisher is suitable for the hydrocarbon materials fire?
Where should musterlists be posted?
Seawater may be used for drinking water ____.
If you have to abandon ship and enter a life-raft, your main course of action should be ____.
If you burned your arm on a bare steam line, the most effective immediate treatment would be to ____.
The minimum amount of oxygen required to support life is ____.
The scuppers should be plugged _______.
The temperature of the fuel oil received during bunkering operations is critical in determining the ______.
______ shows 1.2 meter and the specific gravity of the oil is 0.96. According to the measuring scale, that makes 150 tons.
The _____ tool is used in precision work to smooth or enlarge a slightly undersized hole.
Piston of No.2 cylinder of main engine has been removed, and it will be ___ by noon tomorrow.
Under the provisions of applicable international conventions, ships entitled to fly the flag of a Party are subject, while in the port of a Party, to control by officers duly authorized by the Party.
____ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.
The word “discharge” as used in Pollution Prevention Regulations applies to oil ____.
What is the purpose of requirement for some ships to carry equipment such as EPIRBs and SARTs?