Test online for marine engineers (Engine, Support level) (CES v6.0)
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Тест складався із 80 випадкових питань.
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Усього питань на цю тему: 86
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Правильні відповіді:
1
We are taking a crankshaft deflection control of the engine. The reason is:
Ваша відповідь правильна:
To control the weardown of the main bearings.2
During overhaul of some plate type compressor valves the engine room rating is asked to clean the valve plates and seat. Some of the valve plates are heavily marked. What action should be taken?
Ваша відповідь правильна:
Discard the defective valve plates and replace them with new spares.3
When having a fire alarm during normal working hours, what immediate actions should be taken?
Ваша відповідь правильна:
Act according to instructions given in the fire plan.4
What is a system employing a single common freshwater cooler (cooled by means of seawater) called?
Ваша відповідь правильна:
Central cooling system.5
Why use a central cooling system?
Ваша відповідь правильна:
It requires less maintenance.6
If a casualty has no pulse, the first aider must immediately:
Ваша відповідь правильна:
Start heart compression and artificial respiration.7
A small electric motor needs to be taken to the bottom plates for fitting to a domestic water pump. It is only just too heavy to be manually carried so is to be lowered using the engine room crane. Which of the options given would be a suitable strop to use for the operation?
Ваша відповідь правильна:
Any certified strop which has a safe working load greater than the weight of the motor.8
As part of the routine duties a rating on boiler watch is requested to assist with the daily chemical treatment for the boiler and feed water systems. Where will the rating find the information relating to the hazards associated with the chemicals involved in this task?
Ваша відповідь правильна:
The material safety data sheets supplied with the chemicals.9
How is the temperature of the high temperature circuit of a central cooling system normally controlled?
Ваша відповідь правильна:
By mixing with water from the low temperature circuit.10
What should be the first action to be taken in the event of the water level disappearing out of the boiler water level gauge glass?
Правильну відповідь:
Secure all of the burners.Ваша відповідь:
Call the Chief Engineer.11
Some engine makers use a copper casket for proper sealing between fuel injector valve, cylinder head and combustion chamber. Why is it so important to use the correct one?
Ваша відповідь правильна:
To keep the valve in correct position and to maintain proper sealing.12
Steam escaping from the area of the bottom water header handhole doors of a high pressure boiler generating superheated steam is observed by the engine rating on watch. What action should be taken?
Ваша відповідь правильна:
Immediately inform the Officer of the Watch.13
The bottom end bolts for a high speed diesel engine are checked to see if they are fit for service by measuring the free length against a standard length. During overhaul the check reveals that one out of a pair of bolts has exceeded the recommended elongation limit. From the options given select the most appropriate action to be taken.
Правильну відповідь:
Replace the pair of bolts with new spares.Ваша відповідь:
Replace all of the bottom end bolts in the engine with new spares.14
A piston ring set for a trunk piston engine often includes a slotted ring tensioned by an internal spring. What is the purpose of this type of piston ring?
Ваша відповідь правильна:
It is an oil control ring.15
Following repair and refitting of the seawater pipe for the fresh water generator feed line the rating assisting with the work notices that one of the flange joints is leaking. What action should be taken by the rating?
Ваша відповідь правильна:
Check the bolts are correctly tightened before informing the engineer so that the flange faces can be cleaned and re-jointed if necessary.16
Port State Control Officers are authorised to:
Правильну відповідь:
Inspect and detain ship that are not meeting the requirements until they are able to demonstrate compliance with the regulations.Ваша відповідь:
Regularly inspect ships known to meet the requirement.17
A pump cover is sealed using a paper gasket which is damaged during overhaul. There are no spare gaskets available. How should the casing be sealed when reassembling the pump?
Ваша відповідь правильна:
Make a new gasket from old chart paper or other similar material of the same thickness as the original gasket.18
What is the main difference between a stuffing box gland and a mechanical seal on a centrifugal pump?
Ваша відповідь правильна:
If packing fails the pump can be kept running by tightening the glands, but if a mechanical seal fails it must be renewed to stop the leakage.19
Which of the options given is one of the main responsibilities of a watch-keeping engineer?
Ваша відповідь правильна:
To inform the Chief Engineer of any situations that cannot be controlled during the watch.20
What type of heat exchanger is shown in the illustration?
Ваша відповідь правильна:
Plate.21
During maintenance work at sea an engine room rating is moving a heavy component to the workshop using a chain block attached to an overhead trolley on a rail. Part way through the operation the rating is asked by the engineer to go immediately to the store for some equipment. What should the rating do?
Ваша відповідь правильна:
Continue with the moving operation until the component is properly secured in the workshop before going to the store for the equipment.22
Why is it important that the combustion chamber of a boiler is properly ventilated prior to ignition?
Ваша відповідь правильна:
To avoid an explosion in case any oil vapours are present from oil leakage into the furnace.23
You are going to start firing a boiler. Which of the below mentioned alternatives do you consider as most important?
Ваша відповідь правильна:
A thorough ventilation of the combustion chamber before the ignition takes place.24
What should the Fitter be asked to do?
Правильну відповідь:
The Fitter should be asked to check the level of hydraulic oil in the header tank.Ваша відповідь:
The Fitter should be asked to stack empty oil drums on the forecastle.25
An airway should be used when:
Ваша відповідь правильна:
The patient is breathing on his own but is doing so with great difficulty.26
During maintenance work on a fuel tank the engine room ratings are removing scale in preparation for re-coating. One of the ratings suddenly notices the smell of fumes even though the atmosphere had been satisfactorily tested before the work started. What action should the ratings take?
Ваша відповідь правильна:
Leave the tank immediately and have the atmosphere retested.27
An engine room rating is assisting in the maintenance of some of the valves on the low pressure steam range. Which packing material, from the options given, would be the best choice for repacking the gland of a low pressure steam valve?
Ваша відповідь правильна:
Graphite fibre packing.28
A threaded hole is to be formed in a steel plate using a tap and wrench. When drilling the hole which of the options best describes the required drill size?
Ваша відповідь правильна:
The drill should be a smaller size than the diameter of the tap.29
The boiler gauge glasses should be blown down:
Правильну відповідь:
At the beginning of every watch.Ваша відповідь:
Once a day.30
Which of these are indications that a parcel is suspicious?
Ваша відповідь правильна:
The parcel is addressed to no one in particular, arrives unexpectedly and seems heavy for its size.31
Why is it important that all the system valves are closed after completing bilge or ballast pumping operations?
Ваша відповідь правильна:
To avoid accidental intake of water into the engine room in case of valve or pipeline failure.32
What is the most suitable type of packing for a shaft gland of a pump used for seawater duties?
Ваша відповідь правильна:
Greasy cotton packing.33
In the human body, breathing is controlled by:
Ваша відповідь правильна:
The respiratory centre in the brain.34
Why are we blowing the engine before start (slow turning on air)?
Ваша відповідь правильна:
To be sure that we do not have water collected in the cylinders.35
How do the extinguishing agents act?
Ваша відповідь правильна:
By cooling, smothering, unfeeding (combustible suppression), inhibition.36
Which of the options given is most likely to result in overheating of a ball bearing fitted to a pump shaft?
Ваша відповідь правильна:
Completely filling the bearing with grease.37
A piston ring set for a trunk piston engine often includes a slotted ring tensioned by an internal spring. What is the purpose of this type of piston ring?
Ваша відповідь правильна:
It is an oil scraper ring.38
During replacement of the main bearing shells on a medium speed diesel engine it is necessary to remove both the top and bottom half shells. From the options given select the method that is most commonly employed to remove the bottom half shells from the bearing pockets on an engine with a traditional bedplate?
Ваша відповідь правильна:
Fit a driver in the crankshaft oil hole which bears against the edge of the bottom half shell and turn the engine.39
What should be the first indication that the engine room watchkeepers get that there is oil or water leakage in the engine room?
Ваша відповідь правильна:
They should see it on the tank top or in the bilge well during regular inspections.40
To achieve best possible combustion in our engine, we want to have:
Ваша відповідь правильна:
An atomization of the fuel injected into the combustion chamber.41
Select from the options given the statements that best describes the main duties of an engine room rating who is part of an engine room watch?
Ваша відповідь правильна:
Engine room ratings forming part of an engine room watch should assist in efficient and safe watch-keeping routines.42
Which of the following pump types will normally require a separate means of priming?
Ваша відповідь правильна:
Centrifugal pump.43
A spare cylinder head for the generator needs to be lifted from its storage cradle to the generator flat. Because of its location the engine room crane cannot be positioned directly above it. What method should be used to bring the cylinder head into position?
Ваша відповідь правильна:
Rig chain blocks to lift the cylinder head from its cradle and then transfer it gradually over to the crane hook by working the chain blocks.44
A new gasket has been fitted to the manhole cover of a ballast tank. Which of the options given would be a suitable test that the new gasket is correctly fitted?
Ваша відповідь правильна:
Carry out a hose test on the manhole cover.45
When cleaning boiler burner nozzles that have just been in service the watch rating notices that the nozzle holes are partially blocked. Which of the methods given in the options is the preferred method to use in order to avoid damaging the nozzle holes?
Ваша відповідь правильна:
Use cleaning wires starting with a small gauge and gradually work up to the full size of the nozzle hole.46
One of the two water level gauge glasses on the high pressure boiler steam drum has started leaking quite heavily. What action, from the options given, should the boiler watch rating take?
Ваша відповідь правильна:
Inform the Officer of the watch immediately so that arrangements can be made to replace the leaking glass.47
Which of the options given is the main reason for using a ring spanner to tighten the brass nuts on the cover studs of a pump casing?
Ваша відповідь правильна:
It will minimise the risk of slipping off the nut or damaging the nuts.48
A plate type heat exchanger in a central cooling system has seawater leaking around the edges of some of the titanium plates. After inspection and reassembly following the manufacturer’s instructions the problem still exists. What action, from the options given, should be taken to rectify the problem?
Ваша відповідь правильна:
Fit new gaskets to the each of the plates.49
What is the correct lifting technique?
Ваша відповідь правильна:
Legs bent, back straight, using leg muscles to lift.50
Why is it preferable to have the sea water pressure lower than the fresh water pressure in a sea water cooled heat exchanger for a central cooling system?
Ваша відповідь правильна:
Prevent seawater contamination of the central cooling system in the event of seal failure.51
Most of the engine makers recommend to change the cylinder head gaskets each time a piston overhaul is carried out. Why?
Правильну відповідь:
To obtain a proper sealing and correct distance between piston and cover in TDC position.Ваша відповідь:
To be granted a proper sealing with a new gasket.52
An immersion suit will not sustain burning or continue melting after being totally enveloped in a fire for a period of:
Ваша відповідь правильна:
2 sec.53
Which of these are indicators that an individual may be a drug smuggler?
Ваша відповідь правильна:
The individual wears bulky or out of season clothing.54
For a 4-stroke diesel engine, the exhaust gas from the funnel is seen to be white/light grey in colour. Which of the options given is the most likely cause of this.
Ваша відповідь правильна:
Water leaking into the combustion chamber.55
Zinc anodes are used on the seawater side of heat exchangers to:
Правильну відповідь:
Prevent against corrosion.Ваша відповідь:
Prevent scaling.56
What is the most likely cause of an increase in the chloride content of the fresh water in a central cooling system?
Ваша відповідь правильна:
Leakage of sea water from the central coolers.57
What is the minimum distance between the helmet and the head of the wearer supposed to be?
Ваша відповідь правильна:
3 cm.58
Why should engine and boiler rooms be kept clean and any oil spillage cleaned up immediately?
Ваша відповідь правильна:
To reduce risk of fire and the risk of slipping.59
On a fire patrol at night you see smoke coming from a closed cabin door. What action should you take first?
Ваша відповідь правильна:
Activate the nearest fire alarm button and advise bridge of the location of the fire.60
The holding down arrangement for a large 2-stroke diesel engine consists of steel chocks and hydraulically tightened holding down bolts. When carrying out routine maintenance of the arrangement which method, from those given in the options, should be adopted to check that it is in good order.
Ваша відповідь правильна:
Check the hydraulic release pressure for the holding down bolts.61
When checking the diesel engine jacket water header tanks as part of the routine watch checks the engine room watch rating finds the level is well below normal. After topping up the tank and checking around the engine a leak is found. What action should be taken?
Ваша відповідь правильна:
Try and quickly stop the leak and then inform the engineer on watch of what has happened.62
You have abandoned ship in a liferaft. In most cases, which of the following actions should you generally take?
Ваша відповідь правильна:
Organise a lookout system. Join up with other survival craft if possible. Stream the sea anchor.63
Where do you find instructions for tasks and duties in case of an emergency?
Ваша відповідь правильна:
In the muster list.64
An engine room rating is assisting in the maintenance of some of the valves on the low pressure steam range. Which packing material, from the options given, would be the best choice for repacking the gland of a low pressure steam valve?
Ваша відповідь правильна:
Graphite fibre packing.65
While assisting the watchkeeper with routine cleaning of the fuel oil separator the watch rating is requested to clean the plate stack. Which one is the preferred method for this task?
Ваша відповідь правильна:
Soak the plates in a suitable solvent until all of the dirt has loosened off and wipe clean with rags.66
Modern medium speed diesel engines normally have relatively short crankshafts with large diameter pins. How do these design features affect the reliability of crankshaft deflection readings?
Ваша відповідь правильна:
They increase the risk of inaccurate readings due to the “stiff” shaft having very small natural sag which may therefore result in “floating journals” in the static condition.67
An engine room rating is assisting the duty engineer during a period of UMS operation. After completing the tasks they have been busy with the engineer and rating leave the engine room which is returned to UMS mode. The rating realises that an oil tank filling valve has been left open. What action should be taken?
Ваша відповідь правильна:
Inform the duty engineer immediately so that the engine room can be re-entered and the valve can be shut.68
A drip tray containing oil is on fire. The only fire fighting equipment available is water hose with spray jet/spray nozzle. How, if at all, should you attempt to put out this fire using water?
Правильну відповідь:
The water can be applied in a fine spray starting from the front in a sweeping motion.Ваша відповідь:
Water should be applied in a jet to the back of the fire.69
Why is it important to check the timing on the cylinder oil lubricants?
Ваша відповідь правильна:
To get the oil into the cylinder when the piston is in the right position.70
Which of the following are frequent causes of fires in accommodation?
Ваша відповідь правильна:
Smoking in bed; covering of electric fires with blankets; overloading electric plugs.71
To prevent inadvertent leaks, bunker manifold not in use should:
Правильну відповідь:
Have blank flanges fitted with gaskets and tightened with all bolts in place.Ваша відповідь:
Have blank flanges fitted with gaskets and tightened with some bolts in place.72
When a fire breaks out in the accommodation, cargo holds or on deck, who is in charge of the fire fighting operations?
Ваша відповідь правильна:
The person who is designated in the muster list.73
Which of the following pump types could be damaged if the discharge valve is closed before the motor is stopped?
Ваша відповідь правильна:
Gear pump.74
Which of the given options best completes the following statement? You should never attempt to light a boiler until:
Ваша відповідь правильна:
The furnace purge sequence is completed.75
During routine checking of an engine following start up it is discovered that the start air pipe to one of the cylinders is hotter than normal. What is the likely cause of this problem?
Ваша відповідь правильна:
The air start valve for the cylinder is leaking or stuck open.76
What do you understand by: “Move the pilot ladder”?
Правильну відповідь:
Move the pilot ladder means to shift the pilot ladder to a new position.Ваша відповідь:
Move the pilot ladder means to shift the pilot ladder to the opposite side of the vessel.77
What do you understand by: “Let go the port anchor”?
Ваша відповідь правильна:
Open the port windlass brake.78
What kind of permits have to be obtained before starting cold work in tanks?
Ваша відповідь правильна:
Cold work permit + Permit for entry.79
What action should be taken if it is noticed that there is a quantity of oil on the engine room tank top?
Ваша відповідь правильна:
Notify the duty engineer and try and find the cause of the leakage so that it can be stopped and the oil cleaned up.80