Test online for marine engineers (Engine, Support level) (CES v6.0)
Test results
The test consisted of 80 random questions.
Total questions on this topic: 86
Total questions on this topic: 86
Your result: 91%
Right answers:
1
Zinc anodes are used on the seawater side of heat exchangers to:
Your answer is correct:
Prevent against corrosion.2
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?
Your answer is correct:
Soak the plates in a suitable solvent until all of the dirt has loosened off and wipe clean with rags.3
What kind of permits have to be obtained before starting cold work in tanks?
Your answer is correct:
Cold work permit + Permit for entry.4
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?
Your answer is correct:
Fit new gaskets to the each of the plates.5
Which of the options given is most likely to result in overheating of a ball bearing fitted to a pump shaft?
Correct answer:
Completely filling the bearing with grease.Your Answer:
Fitting a sealed bearing that cannot be greased.6
Why use a central cooling system?
Your answer is correct:
It requires less maintenance.7
How is the temperature of the high temperature circuit of a central cooling system normally controlled?
Your answer is correct:
By mixing with water from the low temperature circuit.8
Which of the following pump types will normally require a separate means of priming?
Your answer is correct:
Centrifugal pump.9
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?
Your answer is correct:
Secure all of the burners.10
On a fire patrol at night you see smoke coming from a closed cabin door. What action should you take first?
Your answer is correct:
Activate the nearest fire alarm button and advise bridge of the location of the fire.11
What is the correct lifting technique?
Your answer is correct:
Legs bent, back straight, using leg muscles to lift.12
We are taking a crankshaft deflection control of the engine. The reason is:
Your answer is correct:
To control the weardown of the main bearings.13
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?
Your answer is correct:
Graphite fibre packing.14
Which of the options given is one of the main responsibilities of a watch-keeping engineer?
Your answer is correct:
To inform the Chief Engineer of any situations that cannot be controlled during the watch.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?
Your answer is correct:
Check the bolts are correctly tightened before informing the engineer so that the flange faces can be cleaned and re-jointed if necessary.16
Which of the following are frequent causes of fires in accommodation?
Your answer is correct:
Smoking in bed; covering of electric fires with blankets; overloading electric plugs.17
What is the main difference between a stuffing box gland and a mechanical seal on a centrifugal pump?
Your answer is correct:
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.18
What should be the first indication that the engine room watchkeepers get that there is oil or water leakage in the engine room?
Your answer is correct:
They should see it on the tank top or in the bilge well during regular inspections.19
How do the extinguishing agents act?
Your answer is correct:
By cooling, smothering, unfeeding (combustible suppression), inhibition.20
To achieve best possible combustion in our engine, we want to have:
Your answer is correct:
An atomization of the fuel injected into the combustion chamber.21
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?
Your answer is correct:
The fillet radii.22
You have abandoned ship in a liferaft. In most cases, which of the following actions should you generally take?
Your answer is correct:
Organise a lookout system. Join up with other survival craft if possible. Stream the sea anchor.23
In the human body, breathing is controlled by:
Correct answer:
The respiratory centre in the brain.Your Answer:
The lungs.24
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.
Your answer is correct:
Water leaking into the combustion chamber.25
What is a system employing a single common freshwater cooler (cooled by means of seawater) called?
Your answer is correct:
Central cooling system.26
A boiler plant has been shut down for some time. Prior to starting the boiler, which of the following subjects is the “most important” control check?
Your answer is correct:
That the combustion chamber of the boiler is checked being empty for oil and that the pre-ventilation function prior to ignition is functioning.27
Why is it important that the combustion chamber of a boiler is properly ventilated prior to ignition?
Your answer is correct:
To avoid an explosion in case any oil vapours are present from oil leakage into the furnace.28
What is the most likely cause of an increase in the chloride content of the fresh water in a central cooling system?
Your answer is correct:
Leakage of sea water from the central coolers.29
Most of the engine makers recommend to change the cylinder head gaskets each time a piston overhaul is carried out. Why?
Your answer is correct:
To obtain a proper sealing and correct distance between piston and cover in TDC position.30
To prevent inadvertent leaks, bunker manifold not in use should:
Your answer is correct:
Have blank flanges fitted with gaskets and tightened with all bolts in place.31
What should the Fitter be asked to do?
Your answer is correct:
The Fitter should be asked to check the level of hydraulic oil in the header tank.32
Which of these are indications that a parcel is suspicious?
Your answer is correct:
The parcel is addressed to no one in particular, arrives unexpectedly and seems heavy for its size.33
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?
Correct answer:
Carry out a hose test on the manhole cover.Your Answer:
Fill the tank with water up to capacity.34
An immersion suit will not sustain burning or continue melting after being totally enveloped in a fire for a period of:
Your answer is correct:
2 sec.35
Why are we blowing the engine before start (slow turning on air)?
Your answer is correct:
To be sure that we do not have water collected in the cylinders.36
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?
Your answer is correct:
It will minimise the risk of slipping off the nut or damaging the nuts.37
Which of the following pump types could be damaged if the discharge valve is closed before the motor is stopped?
Your answer is correct:
Gear pump.38
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?
Your answer is correct:
Any certified strop which has a safe working load greater than the weight of the motor.39
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?
Your answer is correct:
Engine room ratings forming part of an engine room watch should assist in efficient and safe watch-keeping routines.40
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?
Your answer is correct:
It is an oil control ring.41
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?
Your answer is correct:
Leave the tank immediately and have the atmosphere retested.42
Why should engine and boiler rooms be kept clean and any oil spillage cleaned up immediately?
Your answer is correct:
To reduce risk of fire and the risk of slipping.43
Port State Control Officers are authorised to:
Your answer is correct:
Inspect and detain ship that are not meeting the requirements until they are able to demonstrate compliance with the regulations.44
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?
Your answer is correct:
Continue with the moving operation until the component is properly secured in the workshop before going to the store for the equipment.45
What do you understand by: “Move the pilot ladder”?
Your answer is correct:
Move the pilot ladder means to shift the pilot ladder to a new position.46
Which of these are indicators that an individual may be a drug smuggler?
Your answer is correct:
The individual wears bulky or out of season clothing.47
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.
Correct answer:
Replace the pair of bolts with new spares.Your Answer:
Replace all of the bottom end bolts in the engine with new spares.48
In the fire fighting of fires of a C kind with dry chemical powder extinguishers, the application is performed:
Your answer is correct:
In a continuous way so that the powder spray is in the same direction as the one of the flame.49
Why is it important to check the timing on the cylinder oil lubricants?
Correct answer:
To get the oil into the cylinder when the piston is in the right position.Your Answer:
To get the right amount of oil into the cylinder.50
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?
Your answer is correct:
Graphite fibre packing.51
According to their physical state, extinguishing agents may be classified in to:
Correct answer:
Solid, liquid and gases.Your Answer:
Proteinic and synthetic.52
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?
Your answer is correct:
To keep the valve in correct position and to maintain proper sealing.53
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?
Your answer is correct:
Use cleaning wires starting with a small gauge and gradually work up to the full size of the nozzle hole.54
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?
Your answer is correct:
It is an oil scraper ring.55
What type of heat exchanger is shown in the illustration?
Your answer is correct:
Plate.56
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?
Your answer is correct:
The water can be applied in a fine spray starting from the front in a sweeping motion.57
The boiler gauge glasses should be blown down:
Your answer is correct:
At the beginning of every watch.58
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?
Your answer is correct:
The drill should be a smaller size than the diameter of the tap.59
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.
Your answer is correct:
Check the hydraulic release pressure for the holding down bolts.60
What action should be taken if it is noticed that there is a quantity of oil on the engine room tank top?
Your answer is correct:
Notify the duty engineer and try and find the cause of the leakage so that it can be stopped and the oil cleaned up.61
When having a fire alarm during normal working hours, what immediate actions should be taken?
Your answer is correct:
Act according to instructions given in the fire plan.62
Where do you find instructions for tasks and duties in case of an emergency?
Your answer is correct:
In the muster list.63
An airway should be used when:
Your answer is correct:
The patient is breathing on his own but is doing so with great difficulty.64
What is the most suitable type of packing for a shaft gland of a pump used for seawater duties?
Your answer is correct:
Greasy cotton packing.65
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?
Your answer is correct:
Prevent seawater contamination of the central cooling system in the event of seal failure.66
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?
Your answer is correct:
The material safety data sheets supplied with the chemicals.67
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?
Your answer is correct:
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.68
What do you understand by: “Let go the port anchor”?
Your answer is correct:
Open the port windlass brake.69
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?
Your answer is correct:
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.70
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?
Your answer is correct:
Try and quickly stop the leak and then inform the engineer on watch of what has happened.71
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?
Correct answer:
The air start valve for the cylinder is leaking or stuck open.Your Answer:
The main air start automatic valve has not closed properly.72
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?
Your answer is correct:
Fit a driver in the crankshaft oil hole which bears against the edge of the bottom half shell and turn the engine.73
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?
Your answer is correct:
Make a new gasket from old chart paper or other similar material of the same thickness as the original gasket.74
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?
Your answer is correct:
Discard the defective valve plates and replace them with new spares.75
Which of the given options best completes the following statement? You should never attempt to light a boiler until:
Your answer is correct:
The furnace purge sequence is completed.76
You are going to start firing a boiler. Which of the below mentioned alternatives do you consider as most important?
Your answer is correct:
A thorough ventilation of the combustion chamber before the ignition takes place.77
Why is it important that all the system valves are closed after completing bilge or ballast pumping operations?
Your answer is correct:
To avoid accidental intake of water into the engine room in case of valve or pipeline failure.78
The valve that prevents water from backing out of the boiler into the feed-water line is called:
Your answer is correct:
Feed-check valve.79
What is the minimum distance between the helmet and the head of the wearer supposed to be?
Your answer is correct:
3 cm.80