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Головна Онлайн-тести CES Slow Speed 3rd-Eng/4rd-Eng Test for specialists working in Engine room (CES v6.0)
Онлайн-тестування: Test for specialists working in Engine room (CES v6.0)
Виберіть режим роботи з тестом:
Навчання
Онлайн-тест
Опис
Відгуки
Тест складається із 80 випадкових питань.
Усього питань на цю тему: 147
Усього питань на цю тему: 147
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How many separate means of escape are provided from each fire zone above the bulkhead deck?
One.
At least two.
At least three.
At least ten.
What is the best method to use to remove heavy scale and fouling from the plates of a heat exchanger?
Use high-pressure cleaner with abrasive additives.
Soak the plates in recommended cleaning solution and then use a soft brush or pressure cleaner.
Use wire-brush metal scrapers and chipping guns.
Renew the plates.
Before leaving the machinery spaces of a UMS vessel after routine watchkeeping rounds in the evening, the duty engineer inspects the doors to Fuel Oil Treatment rooms which are covered by a fixed fire fighting installation. For what purpose does he do this?
To tie them open with a rope to prevent the heat from building up inside, and making it uncomfortable to work.
To make sure that they are properly closed with the self closing device so that any fire is contained and the extinguishing medium can be released without delay.
Wedge them open with an arrangement which allows them to be closed quickly in the event of a fire.quickly.
What action should be taken by the engine room rating if a piece of machinery is not functioning properly?
If machinery does not function properly, the Chief Engineer should be called out immediately.
If machinery does not function properly, it should be immediately stopped every time.
If machinery does not function properly the duty Engineer should be informed immediately so that plans for further action can be made.
If machinery does not function properly, it should be stopped and serviced immediately.
What is the purpose of the ODME (Oil Discharge Monitoring Equipment) printer?
To prove that oil has been pumped overboard according to regulations.
To prove fault conditions in the ODME.
None of the mentioned.
To prove that the ODME system has been used.
What precautions should be taken, in addition to shutting the main air start valve if work is to be carried out inside the main diesel engine crankcase?
Keep a man posted in the control room to stop anyone who tries to start the engine.
Engage the turning gear and put a notice at each engine control position.
Engage the turning gear, stop the starting air compressors and drain the air receivers.
Engage the turning gear and close every valve on the starting air receivers.
You are starting to get low on water in the lifeboat. What should you do?
Use sea water.
Collect rain water.
Drink urine.
Mix sea water with 50 % fresh water.
Under which circumstances should a sprinkler head of a common fixed sprinkler fire-extinguishing system be activated?
When the smoke density exceeds 12,5 % obscuration per minute, but after the corresponding alarm is acknowledged and assessed at the control panel.
When the temperature is within a range from 68 °C to 79 °C, but after the corresponding alarm is acknowledged and assessed at the control panel.
Automatically, when the temperature is within a range from 68 °C to 79 °C.
Automatically, when the smoke density exceeds 12,5 % obscuration per meter.
Vibration analysis is often used as a conditioning monitoring tool onboard ship as part of the approved planned maintenance system. Many vibration measuring instruments are fitted with a harmonic filter/analyser. How would these filters normally be used during vibration measurement on a centrifugal pump?
To block out any noise or vibration from the surrounding engine room.
To generate an audible sound signal at the same frequency and amplitude as the vibration.
To isolate a single frequency of vibration associated with one of the pumps components.
To sum up all the harmonics of a base frequency to give total vibration for all of the pump’s components simultaneously.
What would be the correct form of response to the question: “What kind of assistance do you require?”
The correct form of response would be: “There is a fire onboard my vessel”.
The correct form of response would be: “My vessel has a fire in the accommodation and we require fire-fighting assistance”.
The correct form of response would be: “I need help on board with a fire and the smoke is very toxic”.
The correct form of response would be: “I need help as soon as possible”.
It is common practice to connect a resistor over an alarm contact (see diagram) in many applications. Why is this connection used?
To monitor the cable/wires for break.
To stabilise power consumption.
To avoid sparks on the contacts when opening and closing.
Enable measuring the total resistance of the circuit.
What is the main reason for keeping engine lubricating oil viscosity within recommended limits?
To reduce system pressure losses.
To ensure the strength of the oil film is sufficient to keep lubricated surfaces apart.
It is not important.
To neutralise any acids that may form.
What do you call the wide rung on a pilot ladder that prevents the ladder from twisting?
The wide rung on a pilot ladder that prevents it from twisting is called a “Spreader”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Wide step”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Long rung”.
The wide rung on a pilot ladder that prevents it from twisting is called a “Ani-twist rung”.
During maintenance of a pneumatically operated, diaphragm actuated control valve the diaphragm is found to be split. Select, from the options given, a suitable material to use to make a temporary replacement if there is no spare diaphragm available.
Natural rubber sheet of approximately the same thickness and elasticity as the original diaphragm material.
Cotton reinforced rubber insertion sheet of smaller thickness but similar strength as the original diaphragm material.
Natural rubber sheet of greater thickness and lower elasticity as the original diaphragm material.
Cotton reinforced rubber insertion sheet of approximately the same thickness but less elasticity than the original diaphragm material.
Many large slow speed diesel engines operating on heavy fuel oil have a fuel injection system which features Variable Injection Timing. How does this affect engine operation?
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over the entire load range.
VIT allows the ship’s engineers to alter the injection timing for each load setting with a simple single adjustment of the fuel rack.
VIT increases engine efficiency by automatically maintaining the maximum cylinder pressure over part of the load range.
Is it always possible to use the word “ship” instead of the word “boat”?
A large vessel is always called a “ship” and never a “boat”.
Normally a small vessel is called a “boat” rather than a “ship”, otherwise it is not important.
Either can be used anytime.
A boat can only be used for vessels under 50 metres in length.
What is the main effect on lubricating oil of operating for long periods at excessively high temperature?
It will cause the oil to oxiside, increasing the viscosity.
It will cause the oil to oxidise, reducing the viscosity.
It will cause the oil to evaporate, increasing consumption.
It will change the flashpoint of the oil.
Why is it important to check the timing of diesel engine cylinder oil lubricators?
To ensure the piston is not covering the lubrication points and blocking the flow of cylinder lubricating oil into the cylinder.
To ensure cylinder lubricating oil enters the cylinders when the piston is in the required position.
To ensure the correct amount of cylinder lubricating oil is fed into the cylinders.
To avoid excess pressure in the cylinder lubrication system.
In a low pressure auxiliary boiler, what would be considered to be the maximum allowable chloride level of the boiler water?
600 PPM.
1 000 PPM.
300 PPM.
50 PPM.
Personnel in a high voltage switchroom and smell rotten eggs. What may this indicate?
Burning of insulation.
Arcing at badly coupled bus bars.
Problems with a vacuum circuit breaker.
Problems with a gas (SF6) circuit breaker.
New MARPOL regulations came into effect from July 93 stating that the previous instantaneous rate of discharge of oil content (60 litters per nautical mile) was changed to:
10 litters per nautical mile.
25 litters per nautical mile.
30 litters per nautical mile.
20 litters per nautical mile.
An important quantity which is useful in circuit analysis is known as conductance G (Siemens). Which of the formulas A to D expresses the conductance for this circuit?
G = 1/R.
G = 2R.
G = R·V.
G = I/R.
What could cause diesel engine lubricating oil to appear cloudy with a slightly “milky” colour?
Fuel contamination of the system.
Oxidation of the oil.
High temperature of the oil.
Water contamination of the system.
Modern slow speed, two stroke diesel engines often have locating pins or pegs to keep the piston rings in a fixed position. Why is this arrangement used?
The piston ring gaps can be kept in line to control the gas pressure on each of the rings.
The piston rings are more difficult to lubricate because of the slow operating speeds and will wear more quickly if they are allowed to rotate.
It avoids the risk of the ends of the piston rings being forced out by the gas pressure and catching on the scavenge ports.
It ensures the rings cannot be mixed up and that they are fitted in the correct order on the piston.
The correct time to synchronise is usually taken to be when the synchroscope reaches the “5 to 12” position and is rotating slowly clockwise. This to allow for:
Synchroscope error.
Generator phase difference error.
Circuit breaker operating time.
Synchroscope pointer time lag.
What would the First Engineer require?
The First Engineer would require the Chief Officer to keep him advised of bilge soundings.
The First Engineer would require the Fitter to check the carbon dioxide fire-fighting equipment.
The First Engineer would require cleaning of the feed water tank.
The First Engineer would require an inspection of the heating coils.
The exhaust gas temperatures of all cylinders of a diesel engine are seen to be high. Select, from the options given, the most likely cause of this:
Insufficient cooling of the main bearings.
Poor fuel oil quality.
High wear rate in one of the fuel injection pumps.
One of the fuel cams is worn.
Where would you find out which fire sections are enclosed by “A” or “B” class divisions on a ship?
All the mentioned alternatives.
On the general arrangement plan.
On the capacity plan.
On the Ship’s fire control plans.
PT-100 sensors are some times used with 3 or 4 wires. What is the reason for this?
Higher mechanical strength of the cable.
For fault indication.
Because of power-consumption.
Higher measuring accuracy.
What is the period of validity of the Safety Management Certificate?
1 year.
5 years.
6 months.
2 years.
What cooling medium is normally used to cool the condenser of a fresh water generator?
Air.
Seawater.
Brine.
Distillate (freshwater).
MARPOL – Annex V. Disposal of garbage outside “Special Areas”. After unpacking spares, you are left with a limited amount of packing materials. Is this prohibited, if not, what will be the nearest distance to land for disposal into the sea of these materials?
This is prohibited.
3 miles.
12 miles.
25 miles.
Many large 2 stroke marine diesel engines are equipped with an auxiliary scavenge air blower. What is the purpose of this equipment?
To provide combustion air at start up, during manoeuvring and low load running when the turbocharger delivery is insufficient.
To allow full load running when the main turbocharger is defective.
To assist the main turbochargers in supplying combustion air when on full load.
To help cool the engine after it has been stopped.
What is the correct name of the tool shown in the illustration?
Pliers.
Chisel.
Monkey wrench.
Padlock.
Is it necessary to cool the samples taken from a diesel engine cooling water system before carrying out tests to determine the concentration of treatment chemicals?
No, the test should be carried out at system temperature.
Yes, the samples should be cooled to approximately 25 °C.
Yes, the samples should be cooled to approximately 50 °C.
No, the samples should be heated to approximately 95 °C.
What do you understand by: “Let go the port anchor?”
Let go the port anchor means: slacken the port anchor cable.
Let go the port anchor means: put the port windlass brake in gear.
Let go the port anchor means: put the port windlass brake in gear and lower the anchor.
Let go the port anchor means: open the port windlass brake.
What is the ideal working temperature for physical work?
-10 °C.
10-15 °C.
21-35 °C.
17-20 °C.
On some large slow speed engines the crosshead guides are adjustable to allow the clearance between the crosshead shoes and the guides to be set equally. The normal arrangement is to have bolted on guide bars with shims fitted behind them. Which of the methods given in the options is the one normally used to ensure this is done correctly?
Fit an equal number of shims behind each guide bar which should result in equal clearances between the guide bars and shoes along the whole length.
Turn the engine so that the piston for the cylinder concerned is at TDC and measure the clearance along the length of each bar and shoe and fit shims to equalise the clearances.
Turn the engine so that the piston skirt is at the bottom of the liner. Use wedges to centralise the piston. Measure the clearances along the length of each bar and shoe and fit shims to equalise the clearances.
Turn the engine so that the piston for the cylinder concerned is at BDC and measure the clearance along the length of each bar and shoe and fit shims to equalise the clearances.
What is the correct name of the part highlighted in the illustration?
Push rod.
Crankshaft.
Camshaft.
Connecting rod.
What is the correct name of the tool shown in the illustration?
Water Pump Pliers.
Adjustable wrench.
Flexible pipe.
Padlock.
In a purifier assuming the separating temperature is correct, what is the probable cause of the processed oil containing water?
The back pressure at the clean oil outlet is too high.
The gravity disc is too small and/or the flow rate is too high.
The throughput is too low.
The gravity is too large.
An earth fault exists on the blue line of a 100 A bilge pump circuit. A second earth fault occurs on the yellow line of a 10 A ventilation fan circuit. The likely outcome is that:
Both motors trip out on overload.
A short circuit occurs between earth faults and the ventilation fan fuse blows.
A short circuit occurs between earth fault and the bilge pump fuse blows.
An open circuit occurs between earth fault and both motors trip out.
What is the most important task after carrying out any major overhaul on a diesel engine?
Start the auxiliary blower to ventilate the engine so that it has sufficient fresh air for starting.
Start the engine to check the direction of rotation.
A thorough check inside the engine to make sure all tools and cleaning rags have been removed.
Repair any damaged paint work on the engine.
On finding a person apparently unconscious in a High Voltage switch room, which of the following should be done?
Raise alarm then drag the victim clear so that they cannot reach live parts while receiving aid.
Check if the victim is in contact with live parts and if not apply first aid.
Raise alarm, identify means of isolation and apply before approaching victim.
Trip all breakers and approach victim.
When referring to onboard oil treatments using a centrifuge, what is meant by the term purification?
Separation of solid contaminants from a liquid during the process.
Separation of two insoluble liquids with different densities, and the removal of solids in the same process.
It is a general term applied to a process for cleaning oil using a centrifuge.
Separation of one insoluble liquid from another.
A mechanical seal, consisting of carbon and ceramic seal rings, is to be fitted to a centrifugal pump shaft. What is the most likely result of not being extremely careful when fitting this type of seal?
The seal rings are hard and may score the pump shaft.
The spring and bellows for the seal can be easily damaged.
The seal rings are brittle and can be easily chipped or damaged.
The rubber O rings for the seal can be easily damaged.
When you are calibrating an instrument what is the most common second step in the procedure?
Adjustment of Zero-point.
Check linearity.
Adjustment of range.
Adjustment of span.
Personnel in a high voltage switchroom smell ozone. Which of the following is the likely cause?
Air circuit breaker problems.
Arcing at badly connected bus bars.
Vacuum circuit breaker problems.
Transformer overload.
What is the meaning of “make fast”?
To act quickly.
To avoid all meals.
To secure a rope.
To coil a rope.
An earth fault exists on the blue line of a 100 A bilge pump circuit. A second earth fault occurs on the yellow line of a 10 A ventilation fan circuit. Both systems are supplied from the ship’s 440 V supply. The likely outcome is that:
A short circuit occurs between earth faults and the ventilation fan fuse blows.
An open circuit occurs between earth fault and both motors trip out.
A short circuit occurs between earth fault and the bilge pump fuse blows.
Both motors trip out on overload.
Which one of the listed requirements regarding the stowage of a survival craft corresponds to present SOLAS regulations? Each survival craft shall be stowed:
In a secure and sheltered position and protected from damage by fire or explosion.
Wherever space is available.
In a state of readiness so that two crew-members can prepare for embarkation and launching in less than 15 minutes.
On the starboard side of the ship.
What acton is required if the crankcase relief valve on an air compressor is operating and emitting an air and oil mixture?
Increase the lift pressure of the relief valve.
Overhaul the compressor unit.
Increase the flow of cooling water to the compressor and intercooler.
Place a drip can beneath the valve to collect any escaping oil.
The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, connected in parallel. Calculate the equivalent L(S) of the two inductors.
L(S) = 18 H.
L(S) = 0,667 H.
L(S) = 1,5 H.
L(S) = 4 H.
The responsibility for safety and security rests with everybody on board the vessel. General house-keeping rules should be followed. Which of the listed rules is the most important?
Do not carry lighters or matches when working outdoors.
Always use gloves when using grinding machines.
Keep tools within easy reach during work.
Keep your working area clean and tidy.
The packed gland on a centrifugal pump is leaking even though the gland has been “nipped up”. What is the correct action to take to stop the leakage?
Tighten up the gland as much as possible until the leakage stops.
Ensure the bilge well to which the leakage is draining is regularly pumped out.
Re-pack the stuffing box loosely with the correct size packing at the earliest opportunity.
Fit an extra ring of oversize packing to the stuffing box at the earliest opportunity.
The two instruments necessary for generator synchonising are:
kW meter and frequency meter.
Voltmeter and synchroscope.
Synchroscope and kVar-meter.
Amp-meter and volt-meter.
A power card taken from a diesel engine cylinder using a mechanical indicator has a flat top. Which of the possible actions given in the options is most likely to correct this irregularity on the power card?
Lengthen the cord for the indicator drum drive.
Change the indicator spring for one with a higher rating.
Shorten the cord for the indicator drum drive.
Lubricate the indicator piston and cylinder.
B Class divisions in ships are constructed so that they are capable of preventing the passage of flame to the end of a standard fire test held for:
30 minutes.
15 minutes.
60 minutes.
45 minutes.
What is the correct name of the part highlighted in the illustration?
Air cooler.
Turbocharger.
Crankshaft.
Cylinder head.
A ship has a medium speed engine and a controllable pitch propeller propulsion system. What would the propeller pitch normally have to be at to allow starting of the engine?
10 % ahead.
25 % ahead.
25 % astern.
Zero.
What is the correct method to use for fitting a rolling contact bearing, such as a ball bearing, onto a parallel shaft?
Use a hammer and a pipe with the same diameter as the inner bearing ring and knock the bearing onto the shaft.
Use emery cloth on the bearing surface on the shaft.
Use emery cloth on the inner ring (contact surface) of the bearing.
Gently heat the bearing in an oil bath and use a bearing puller to draw it onto the shaft.
Which muscle is the most persevering one in the body?
The heart.
None of the mentioned.
The lungs.
The liver.
Under what circumstances would you remove guards and safety devices from machinery?
To allow the shaft to be seen to confirm the machine is running.
When they are rattling and vibrating.
During overhaul and maintenance procedures.
When the safety devices keep stopping the machinery.
What is the objective of the merchant navy?
To earn money for the shipowner.
To transport and deliver goods as quickly as possible.
To provide employment for persons who wish to become seafarers.
To safely transport goods by sea.
Which of the following alternatives summarise the benefits of using high voltage on ships?
Smaller conductors, machines and switchgear.
Smaller conductors, insulators and transformers.
Smaller cables and better power factors.
More efficient transformers and electrical machines.
Modern slow speed, two stroke diesel engines often have locating pins or pegs to keep the piston rings in a fixed position. Why is this arrangement used?
The piston ring gaps can be kept in line to control the gas pressure on each of the rings.
The piston rings are more difficult to lubricate because of the slow operating speeds and will wear more quickly if they are allowed to rotate.
It avoids the risk of the ends of the piston rings being forced out by the gas pressure and catching on the scavenge ports.
It ensures the rings cannot be mixed up and that they are fitted in the correct order on the piston.
What is the approximate content of oxygen in air?
21 %.
99 %.
51 %.
11 %.
Select the option which best describes the primary duty of a watch-keeping engineer:
The primary duty of a watch-keeping engineer is to maintain constant surveillance of the main engine and auxiliary machinery.
The primary duty of a watch-keeping engineer is to maintain the ship’s speed.
The primary duty of a watch-keeping engineer is to ensure that machinery spaces are properly manned.
The primary duty of a watch-keeping engineer is to maintain constant surveillance of the steering gear.
Which of the options represents the best action to take when an item of machinery, which normally operates in automatic mode, is operated in “manual” mode?
Keep the Chief Engineer informed of machines performance on an hourly basis.
Have someone permanently stationed at the machine in case of an operational problem.
Monitor the operation of the machinery on a frequent basis.
Change over all other machinery to manual mode of operation.
During maintenance work on a main diesel engine the fuel injection valve is found to be jammed in the pocket in the cylinder cover. Which of the procedures given in the options should be followed in order to complete the work?
Wedge a bar between the piston top and the bottom of the injector and use the turning gear to force the injection valve out.
Replace the complete cylinder cover with a spare unit and land the cover with the jammed valve ashore for repair in a specialist workshop.
Remove the cylinder cover and try and drive the injection valve out of the pocket from the underside with a hammer and punch.
With the fuel injection valve retaining nuts removed admit compressed air into the engine cylinder to try and blow the injection valve out of the pocket.
A ship moving through heavy seas is affected by the water presure at the bows causing an effect known as “Panting”. What structure in the forward region of the ship combats the effects of Panting?
Double bottom tanks and floors.
Panting beams and stringers.
Collision bulkhead and deck.
Centreline bulkhead.
A vapour compression refrigiration system is usually fitted with a number of devices to give protection and control of the system. Which of the methods given in the options should be used to test the high pressure cut out during routine maintenance and checking of the system?
Manually close each of the evaporator coils by switching off the electrical supply to the liquid line solenoid shut off valves and monitor the condenser pressure.
Close the condenser outlet valve and closely monitor the condenser pressure.
Gradually shut in the condenser cooling water valve or the condenser refrigerant inlet valve while closely monitoring the compressor discharge pressure.
Charge the system with refrigerant until the high pressure cut out operates.
Which diagram is the symbol for a THYRISTOR?
Figure 3.
Figure 4.
Figure 2.
Figure 1.
What could be the cause of a refrigeration compressor running continuously even though normal temperatures for the cold rooms have been reached?
Solenoid valve before the expansion valve stuck in closed position.
High-pressure cut-out is stuck in open position.
The differential pressure switch for the lubricating oil pressure cut-out is stuck in the closed position.
Low-pressure cut-out is stuck in closed position.
How many Radar Transponders (SART) are required to be carried onboard a ship for use in survival crafts?
One in each lifeboat.
2, one of which being capable of floating free if the ship sinks.
Two on each side of the ship.
One on each side of the ship.
A seawater pump requires overhaul but there are no spare wear rings for the casing and impeller. It is decided that new wear rings will be fabricated onboard using the ship’s lathe. What would be the most suitable material to use to fabricate the rings onboard?
Mild steel.
Aluminium brass.
Aluminium.
Zinc.
A section of seawater pipe has been removed for maintenance. When refitting the pipe after completing the work the bolt holes in the flanges are found to be misaligned. What procedure should be followed to finish the work?
Adjacent pipework should be slackened off to allow the pipe to be aligned. Any incorrectly positioned brackets should be adjusted after the pipe is refitted.
Use a chain block to pull the pipe flanges into alignment and leave it in place after the bolts are fitted to avoid overstressing the bolts.
Use wooden wedges to force and hold the pipe into the correct position and then fit the bolts.
Force the pipe into position and then hammer the bolts into the holes to hold the pipe flanges into alignment.
What are the lists called that give the position and task during a lifeboat drill for all persons on board the ship?
The Crew List.
The Muster List.
The Duty List.
The Drill List.
What do you understand by: Bitter end?
Bitter end means: the end link of an anchor cable that is secured within the chain locker.
Bitter end means: a foul taste at the end of a meal.
Bitter end means: to the very last moment.
Bitter end means: the toggled end of a lifeboat painter.
What is the correct name of the part highlighted in the illustration?
Crosshead.
Liner.
Bottom end bearing.
Connecting rod.
The subject “Engine, Operational, Slow Speed” covers both theoretical and practical aspects of safely working with electrical equipment. Mastery of this material is a direct indicator of an employee’s competence in holding a relevant position aboard a vessel. A sailor in the engine department is responsible for maintaining and adjusting engine components, cooling systems, fuel delivery systems, and other related equipment. They are also tasked with monitoring the operation of all machinery, carrying out regular technical inspections, and performing necessary repairs. When handling a low-speed control system (SU), the sailor ensures precise and safe navigation of the vessel, following the captain’s instructions and navigational charts.
- Test type: STCW.
- Version: 6.0.0, 6.0.13.
- Department: Engine.
- Level: Operational.
- Engine: Slow speed.
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