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Heim Online-Tests CES Slow Speed 3rd-Eng/4rd-Eng Test for specialists working in Engine room (CES v6.0)
Online-Test: Test for specialists working in Engine room (CES v6.0)
Online-Test
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Gesamtzahl der Fragen zu diesem Thema: 147
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Which component does this graphical symbol illustrate?
PH analyzer.
Pressure indicator, installed on panel/console.
Pressure indicator, installed locally.
Pressure relief valve, self-contained.
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.
Remove the auto closing device so they remain in whatever position.
Wedge them open with an arrangement which allows them to be closed quickly in the event of a fire.
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.
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.
During a bomb search, which of the following is an important principle to follow?
Throw any suspicious items overboard.
Try to reach behind bulkheads to find a bomb.
Do not touch any suspicious packages.
Know exactly what a bomb looks like.
What is the correct name of the part highlighted in the illustration?
Push rod.
Connecting rod.
Main bearing.
Rocker Arm.
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.
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 the correct amount of cylinder lubricating oil is fed into the cylinders.
To ensure cylinder lubricating oil enters the cylinders when the piston is in the required position.
To avoid excess pressure in the cylinder lubrication system.
The mandatory color of a hand flare is:
Yellow.
Red.
Green.
White.
What type of construction material should be avoided regarding fire protection purposes? (SOLAS II-2/2.2.3).
All combustible materials.
All uncovered wooden materials.
All composite materials.
All plastic materials.
This device can detect a package of drugs inside a large delivery of ship’s stores. What is it?
Security container.
Pallet scanner.
Access control system.
Vapour detector.
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.
Thermistors are temperature sensitive devices. A positive temperature coefficient thermistor will typically have:
Relatively linear characteristic.
Inaccurate measurement.
Relatively non linear characteristic.
Variable reliability.
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.
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 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.
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.
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.
What is meant by the term “feel over sequence” as applied to diesel engine operation following replacement of a crankshaft bearing?
Stopping the engine to check the bearing temperature after a short period of operation and repeating this procedure at increasing running intervals.
Running the engine at low load and gradually increasing the load over a period of 12 hours.
Stop the engine after 2 hours running to check the bearing temperature by running the hand over it.
A detector that is activated by a rise of temperature is:
A thermic detector.
An optic detector.
A smoke detector.
A detector of radiation.
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 do you understand by the order: “Move the pilot ladder to the other side?”
Move the pilot ladder to the other side, means: to move the pilot ladder further along nearer to the bow.
Move the pilot ladder to the other side, means: to rig another pilot ladder.
Move the pilot ladder to the other side, means: to change the position of the pilot ladder from the main deck to the fore deck.
Move the pilot ladder to the other side, means: to shift the pilot ladder to the opposite side of the ship.
The lubricating oil in the bearing housing at the turbine end of a turbocharger gets very dirty after only a few hours in service. What is the most likely reason for this happening?
The wrong type of lubricating oil has been used.
Damaged rotor shaft sealing bushes allowing exhaust gas to leak into the bearing housing.
The turbine end bearing is badly worn.
The lubricating oil filling connection screw cap is missing.
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.
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.
Give the meaning of the following symbol:
Indicates manual starting direction of the engine.
Start water spray.
Reverse engine.
Start engine.
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.
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.
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.
It is recommended that every prospective seafarer should, before being employed in a sea-going ship, receive proper training in personal survival techniques. In respect of such training several recommendations are made. Answer the question: “To whom should training in personal survival techniques be given?”
To all seafarers.
To officers only.
To all ratings.
To deck hands mainly.
An electrical power emergency source in a ship is required because:
It satisfies the SOLAS requirements for ship safety.
The main diesel generator(s) can be taken out of service for overhaul or repair.
It satisfies the need to be environmentally “friendly”.
The ships total load can be shared between main and emergency generators.
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.
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.
What is the ideal working temperature for physical work?
-10 °C.
10-15 °C.
21-35 °C.
17-20 °C.
Some large slow speed diesel engines have jack bolt arrangements for retaining the main bearing top keep in place rather than the more conventional stud bolts. How does this arrangement affect the maintenance and checking procedures for the tie rods on the engine?
The tie rods should be fully tensioned before the jacking bolts are loaded to avoid overload of the bearing caps and frame structure.
The tie rods and jacking bolts must be tightened simultaneously to avoid excess load on either component.
The jacking bolts should be fully loaded before the tie rods are tensioned to avoid excess loads on the tie rods.
It has no effect since the tie rods and jacking bolts have completely separate functions.
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.
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.
Which diagram is the symbol for a THYRISTOR?
Figure 3.
Figure 4.
Figure 2.
Figure 1.
For ideal synchronising as the incomer circuit breaker contacts make, the phase angle difference between the incomer e. m. f. and the busbar voltage should be:
30° behind.
0°.
90° lag.
30° ahead.
While alongside at a repair berth a new section of seawater pipe has been fabricated in a shoreside workshop from drawings supplied by the vessel. During fitting of the pipe by ship’s engineers it is noted that the pipe is too short leaving a gap of about 8 mm between the flange faces. What action should be taken to remedy this problem?
The pipe should be returned to the shoreside workshop for modification or to be remade to the correct dimensions.
The ships engineer’s should use extra long bolts and pull the flanges together.
The ship’s engineers should fit extra thick joints between the flanges to fill the gap.
The ship’s engineers should manufacture a spacer piece to fit the gap.
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 type of component does this graphical symbol illustrate?
Pressure-reducing regulator.
Pressure switch.
Pressure relief valve.
Flow controller.
What is the correct name of the part highlighted in the illustration?
Crankcase relief valve.
Push rod.
Crankshaft.
Camshaft.
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 meaning of “make fast”?
To act quickly.
To avoid all meals.
To secure a rope.
To coil a rope.
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.
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 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.
What is the correct name of the part highlighted in the illustration?
Air cooler.
Turbocharger.
Crankshaft.
Cylinder head.
Which muscle is the most persevering one in the body?
The heart.
None of the mentioned.
The lungs.
The liver.
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.
With two alternators running in parallel, and one is to be disconnected. The first step is to:
Remove the load from the alternator to be stopped.
Increase the frequency on the switchboard.
Trip the main circuit breaker.
Make sure the load is evenly shared.
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.
During an unmanned period on a UMS vessel the “low water level” alarm for the jacket cooling water system expansion tank activities. What action would you take as duty engineer?
Answer the alarm then block the alarm function for later action and resume unmanned operation.
Answer the alarm then block the alarm and change to manned engineroom condition.
Answer the alarm and adjust the alarm set point for the water level in the expansion tank before resuming unmanned operation.
Answer the alarm, top up the tank and check the system for leakage before resuming unmanned operation.
What is the approximate content of oxygen in air?
21 %.
99 %.
51 %.
11 %.
What is the correct name of the part highlighted in the illustration?
Exhaust valve.
Fuel injector.
Air inlet valve.
Air starting valve.
Why may wearing sweat rags slung round your neck when working in the machinery spaces be hazardous?
The rags may cause sweat rash.
The rags may cause you to get too hot and faint.
The rags may be soaked with oil and catch fire.
The rags may be caught by running machinery or power tools.
Which of the following fittings shall be provided to all lifeboats?
A manually controlled lamp fitted on the outside.
A remotely operated steering arrangement.
An electric power starting system for the propulsion engine with one rechargeable energy source.
Permanent boarding arrangements on both sides to enable persons in the water to board the lifeboat.
What is the correct name of the tool shown in the illustration?
Pliers.
Chisel.
Monkey wrench.
Padlock.
What is one of the main features of the cylinder lubricating oil used in large 2 stroke marine diesel engines which normally operate on heavy fuel oil?
It is neutral with a pH value of 7.
It is a pure mineral oil without any special additives.
It is strongly acidic.
It is strongly alkaline.
Which part of the crankshaft of a modern large two stroke diesel engine is most likely to be the origin point for crack initiation during service and therefore needs the greatest attention during maintenance inspection?
The oil holes.
The keyways.
The fillet radii.
The dowel pins and dowel holes.
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.
When a ships derrick or crane lifts a weight off the deck of a ship, from which position can the centre of gravity of the weight be considered to act?
From the centre of the weight lifted.
From the position on the deck from which the weight was lifted.
From a position on the deck at the base of the derrick or crane.
From the head of the derrick or crane.
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.
Zinc.
Aluminium.
Aluminium brass.
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.
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 is the disadvantage of using chemicals on an oil-spill on the water?
It is difficult to apply the chemicals if the oil drifts away from the ship’s side.
The chemicals make it difficult to remove the oil from the water.
It is difficult to apply chemicals if there is any wind.
The water gets a white colour, which makes it easy to detect the oil-spill.
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.
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 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.
For a Nitrite – Borate based cooling water treatment system, what would be considered to be the normal nitrite concentration limits for a correctly dosed system?
3 000 – 4 500 ppm Nitrite.
1 500 – 3 000 ppm Nitrite.
0 – 1 500 ppm Nitrite.
4 500 – 6 000 ppm Nitrite.
If a refrigeration system contains air, how would you remove it from the system?
Pump the system down to the evaporator and keep the fan running until the evaporator is at ambient temperature and vent off the air from the top of the evaporator.
Stop the compressor and vent the air from the crankcase.
Pump the system down to the condenser, continue cooling water flow until the condenser is at the same temperature as the cooling water and vent off the air from the top of the condenser.
Stop the compressor and undo a pipe coupling at the highest point in the system to vent off the air.
Which ships does the ISM code apply to?
Only passenger vessels.
All passenger ships, all cargo ships of 500 GRT or above.
Only tankers and Ro-ros.
All craft above 300 GRT.
As part of the regular maintenance for a paramagnetic oxygen analyser used for measuring the oxygen content of exhaust gas it is important to keep the sample line filter as clean as possible. Why is this necessary with this type of instrument?
The filter may rupture due to the high pressures generated by the sample pump.
Pressure variations in the sample chamber can cause errors so restrictions must be kept to a minimum.
The pressure drop across the filter may damage the sampling pump.
A high flow rate is required in order to deflect the sensing element.
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”.
An air compressor is being refitted in the engine room. The compressor and motor are coupled using a flexible coupling and are mounted on a common “skid” which fixed to the deck with resilient mountings. Which of the statements, from the options given, relating to the alignment of the motor and compressor is true?
Shims should be fitted between the motor and compressor feet and the skid to ensure correct vertical, horizontal and parallel alignment of the coupling halves before it is bolted up.
As long as the two coupling halves are at the same height the flexible coupling will accommodate any horizontal misalingment of difference in the gap between the coupling faces.
The compressor and motor can just be placed directly on the common skid as they will probably be closely aligned anyway.
Machines using flexible couplings and resilient mountings do not need to be aligned. That is why they have flexible and resilient elements fitted.
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.
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.
You are witnessing someone about to faint. What are the symptoms?
The person may be very pale, and pulse is slow at first and weak.
The pulse is very fast and the person is getting cold.
The person starts to talk a lot and seems superactive.
Red face and big eyes.
What is the most important task after carrying out any major overhaul on a diesel engine?
Start the engine to check the direction of rotation.
Repair any damaged paint work on the engine.
A thorough check inside the engine to make sure all tools and cleaning rags have been removed.
Start the auxiliary blower to ventilate the engine so that it has sufficient fresh air for starting.
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.
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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