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Online testing: Test online CES 5.1 for 3rd-Eng/4rd-Eng
Online test
Description
The test consists of random questions on a selected topic.
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What is the meaning of this symbol ?
Start air supply
Release falls
Fasten seat belts
Secure hatches
How is loss of electric power or other fault conditions of fire-detection and fire-alarm systems to be indicated? (SOLAS II-2/13.1.2)
By semi-automatic test systems at the control panel
By fully automatic separate test boards where any faulty condition is initiated by audible and visual signals
By check systems on the control panel
By audible and visual signals at the control panel
Mention some important thoughts for what you have to do when you recognise that fire break out onboard.
Commence fighting the fire, call the persons around the fire and join the fire squad
Report to bridge or duty officer, actuate the fire alarm, call the persons around the fire and join the fire squad
Go to the lifeboat start the motor then call the duty officer and commence fight the fire
Report to bridge or duty officer, actuate the fire alarm, organise and commence fighting the fire
What is the main advantage of a Positive Pressure Breathing apparatus?
The positive pressure makes it easier to breath when working hard.
It is less complicated and cheaper than the demand type BA set.
It ensures a constant supply of air.
If the face mask has a leak toxic fumes/smoke would still not enter the mask.
A cargo hold containing cargo such as nitrates,chlorates etc which produce oxygen under the influence of heat catches fire. How would you deal with this?
Close the hatches, apply boundary cooling and allow the fire to use up the oxygen and extinguish itself
Apply boundary cooling
Close the hatches and use the fixed CO2 system
With this type of material the hatches should not be battened down. The fire can only be extinguished by using large quantities of water.
*How long does it take for a fixed low expansion foam fire-extinguishing system of an engine room to discharge a 15 cm thick layer of foam on the largest single area over which oil fuel is liable to spread?
Less than 10 min
you cannot find such a system in the engine room
Less than 2 min
Less than 5 min
In order to achieve a greater effectiveness when using a permanent system of extinction with gases (for example CO2), we must…
Check the valves, seal the area and activate the extinction system
Only activate the alarm, then the extinction system
Activate the alarm, evacuate the area and seal the place, then activate the extinction system
Activate the extinction system before we activate the alarm
When stripping a tank, if excessive air is allowed to be drawn into the suction line, which of the following may occur?
Control of the operation will be lost and the tank will rapidly empty.
The pump will "race" and there will be a loss of suction.
The cargo pump impeller will stop rotating.
The back pressure will increase.
You are in a position as illustrated. What is the instantaneous oil discharge limit according to MARPOL ?
15 L/nm
120 L/nm
30 L/nm
60 L/nm
If a ship requires 2 nautical miles to stop in the water from a "crash stop" when proceeding at full ahead in deep water. What will the stopping distance be in shallow water?
A greater distance
Similar distance to deep water
About 1.5 nautical miles
A shorter distance
What would you say about a ship which is course unstable?
When you apply rudder, it will take time before she answers to it.
When you put rudder amidship, she will continue on a straight course.
It will maintain course no matter how much rudder you apply.
When you apply rudder, she will continue to turn when the rudder is put amidship, and may even increase rate of turn.
In the situation illustrated, what should be the distribution of the power requirements from the tugs, if the ship is to be moved sideways without changing the heading? Both tugs have similar bollard pull and are of conventional propulsion.
Much greater power on the forward tug than on the after tug while monitoring the gyro heading
Equal power required by both tugs, but monitor the gyro heading to ensure sideward movement only
It would be very difficult to predict the power requirements in this circumstance and it could only be found by observation.
Much greater power on the aft tug than on the forward tug while monitoring the gyro heading.
Which of the following information shall be specified by the muster list ?
the muster list has been prepared and approved by the Administration before the ship proceeds to sea.
the abandon ship signal consisting of two long blasts.
the specific duties assigned to passengers that are in charge of a group of others.
details of the general emergency alarm signal consisting of seven or more short blasts, followed by one long blast.
Give the meaning of the following symbol:
gathering place for embarkation formalities
muster station for unaccompanied minors (UM)
muster station
embarkation station
What shall a rescue person use if he has to jump into the water in order to assist a survivor?
Survival suit
Lifeline
Survival suit and lifeline
Lifejacket
Which one of the listed requirements regarding life-saving appliances corresponds to present regulations?
All prescribed life-saving appliances shall be made of non-combustible or fire retardant material
All prescribed life-saving appliances shall have marking in red colour
All prescribed life-saving appliances shall be of such a colour that they are in contrast to the surrounding colour
All prescribed life-saving appliances shall be fitted with the manufacturers name and Logo
Which item among those below is included in the normal equipment of every lifeboat ?
sea-charts and navigating equipment
one immersion suit for each person
a VHF transceiver
portable fire-extinguishing equipment suitable for oil fires
How many rocket parachute flares are carried in each liferaft?
4
6
12
Nil
*Which one of the listed requirements regarding abandon ship drills corresponds to present SOLAS regulation?
On ships on short international voyages, each lifeboat shall be launched and manoeuvred in the water at least every six months
All lifeboats shall be lowered during drills
Drills shall be conducted when the ship is in a harbour
Each lifeboat shall be launched, and manoeuvred in the water with its assigned crew at least once every three months during an abandon ship drill
Anyone of the crew who is assigned to watch duties in ports has a number of important tasks to carry out. Which one of the listed tasks has to be included in the watchman's duties?
Checking the trim of the vessel.
Checking the moorings for tightness/slack.
Checking the number of persons entering/leaving the vessel.
Checking the safe and secure handling of cargo.
What IMO conventions take care of the human safety at sea?
There isn’t any conventions that take care of the human safety at sea
It is the MARPOL conventions that take care of the human safety at sea
It is the STCW 78/95 that take care of the human safety at sea
It is the SOLAS conventions that take care of the human safety at sea
If your chemical tanker is equipped with high velocity venting valves, at what minimum height above the weather deck or catwalk should they be installed?
2.5 metres
6 metres
3 metres
4.5 metres
What is the purpose of a "Strum Box" on a General Cargo Vessel?
To prevent solids from entering the cargo hold via the bilges
To prevent water from entering the cargo hold
To prevent all solids from entering the bilge system
To prevent solids of certain size from entering the bilge system
What are the required data inputs into most gyro compasses to reduce any possible compass error?
All of the data in the suggested answers
Latitude and Speed
Maximum helm angle and rolling period
Deviation and Variation
A deep tank on a General Cargo ship has been cleaned after discharge of palm oil; what needs to be done to prepare the space for dry cargo?
Ladders checked, CO2 lines closed and temperature probes removed
Suction line blanked off, heating coils fitted and bilge system closed off
Heating coils removed, bilge suctions and CO2 lines opened and tested
Ballast lines opened up, ladders removed and air vents closed
What is the description for a sidelight, as shown in rule 21 of the International Regulations for Preventing Collisions at Sea?
A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 135 degrees, from right ahead to 22.5 degrees abaft the beam on the respective side.
A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 112.5 degree, from right ahead to 22.5 degrees abaft the beam on the respective side.
A red, green or yellow lantern, showing an unbroken light over an arc of 112.5 degrees.
A red light or a green light, with a minimum range, in a vessel of 50 metres or more, of 3 miles. In a vessel of 10 metres or more but less than 50 metres in length, a range of 1 mile.
Which of the tools given in the options would be best suited for cutting a piece of angle iron?
Hacksaw.
Tenon saw.
Crosscut saw.
Rip saw.
When work must be done on High Voltage equipment, it is vital that the equipment is earthed (grounded) after isolation procedures have been carried out. Why is this?
To provide a reference point, and so ensure accuracy of any test results.
To ensure that the equipment does not overheat due to currents circulating through earth (ground).
To ensure that no energy remains in the system and that it cannot be recharged by external influences.
To ensure that it is dead, even if there was a flaw in the isolation procedure.
Your vessel is a tanker, discharging to a facility where the storage tanks are up on a hill behind the quay. You have a problem with your hydraulic plant and the system shuts down. What must be done with the manifold and why?
The valve must be checked as still open, so that once power is restored, discharge will resume and there will be no opressure build-up in the ship's pipelines.
The valve must be checked for free and proper operation, as it may have been damaged by a pressure shock when the system stopped.
The valve must be shut to avoid backflow due to the head of pressure from shore.
A watchman must be detailed to stand by it, to receive instructions from shore.
What are the main elements in a damage control plan?
A damage control plan is the same as an emergency plan
Arrangements for correction of list due to flooding within 15 minutes
Boundaries of the watertight compartments for decks and holds. Position of controls for opening and closing of watertight compartments. Arrangement for correction of list due to flooding.
Instructions and procedures for reporting damage to the Company
Some fresh shrimps have been peeled ready for serving; some salad leaves have been washed ready for the same meal. The meal will not be served for another four hours. What will you do with these ingredients in the meantime?
The shrimps and the salad will be placed in separate containers, covered and placed in the refrigerator until required.
The shrimps will be placed in the refrigerator and the sald placed in cold water, to keep it fresh.
The shrimps and the salad will be placed in separate containers, covered in foil and left on the bench until required.
The ingredients will be combined, seasoned and dressed, transferred to open serving dishes, then placed in the refrigerator until required.
What is shown in the attached image?
The attached image shows derricks
The attached image shows deck cranes
The attached image shows grabs attached to deck cranes, during cargo opertions
The attached image shows grabs attached to derricks, for cargo opertions
At what relative pressure should the superheater safety valve be set to lift at to ensure that adequate steam flow is maintained through the superheater in the event of boiler overpressure?
The same as the lift pressure of the main steam drum safety valves.
Less than the lift pressure of the main steam drum safety valves.
Greater than the lift pressure of the main steam drum safety valves.
3% above normal boiler working pressure
What are the main components causing the magnetic compass to require a regular evaluation and compass correction?
The change in the position of the magnetic pole causing annual changes in the variation
Permanent and induced magnetism in the ships structure
The continual changes of courses steered by the ship
Deviation and Variation
What is required in accordance with IMO's requirements regarding cargo segregation?
No special requirements.
1valve
2 valves
3 valves
On a container vessel, what dictates the roll angle and natural roll period of the ship?
Wave conditions
Hull form
Transverse distribution of container stack weights
Metacentric height
Why is an inertgas system required when COW is undertaken?
Safety purpose?
Improved outturn of cargo?
Less bildup of sediment in tanks?
Higher pumping flowrate?
On a General Cargo vessel, the placards and labels on containers and pallets containing dangerous goods (IMDG Cargo) must be marked with what information ?
IMO Class, UN Number
Number of individual pieces of cargo
UN number
Weight and volume
Why should boiler sootblowers normally only be operated in the correct sequence?
To minimise loss of steam pressure
To ensure soot is cleared progressively from the bottom tubes to the top and toward the boiler uptakes.
To avoid excess stress in the boiler.
So that the operator does not forget which sootblowers have been used.
How would you ventilate your cargo holds when sailing from cold climate to hot climate?
No ventilation should be done?
Ventilate at intervals during the night?
Ventilate at intervals during the day?
Ventilate excessively?
When is it safe for ship's personnel to enter the cargo tank of an LNG carrier to carry out routine maintenance and inspection?
Whenever the tank has been emptied of cargo as long as breathing apparatus is worn.
Only when the tank has been discharged and it is fully inerted.
Only after gas freeing and an atmosphere test shows 21% oxygen content.
Whenever a test of the atmosphere shows a methane content of less than 2% of the lower explosive limit (LEL).
After discharge of any refrigerated cargo a thorough inspection of the vessel should be carried out before presenting the vessel for loading the next cargo. Amongst the reasons for this is to ensure that any traces of or residues from the previous cargo are removed. This is particularly so if a fruit or meat cargo is to be loaded after a fish cargo has been carried. Select, from the options given, the main reason for this requirement.
Fish is usually carried frozen and there may be some damage to the insulation.
Fish can be oily and may leave an oily residue in the cargo space.
Fish is strong smelling and the odour may contaminate the next cargo.
Ventilating with fresh air may only remove the odour temporarily and it will build up again if residues are present.
Some process control systems may several inputs and controlled variables. In this context what is meant by split-range?
On-Off control
Several controllers are connected to the same control-valve
Several control-valves are connected to the same controller
Several control-loops for the same range
When loading stores in a tropical harbour on sunny days, which of the following categories of provisions would you arrange to get out of the sun as soon as possible?
Fruit and vegetables
Dairy items
Bottled goods
Tinned goods
Inert gas drawn from an in-line unit in the main or auxiliary boiler exhaust cannot normally be used in a chemical tanker carrying high-spec products. Why is this?
Because MARPOL severely restricts the cleaning to sea of tanks that have been inerted in this way, unless additional prewashing has first been carried out. This results in the generation of slops which reduce cargo carrying capacity and incurs disposal costs.
Because the gas drawn from such a source cannot be guaranteed to be below the Lower Explosive Limit.
Because the levels of hydrocarbons and suspended soot particles will have a significant negative impact on cargo quality and tank cleanliness.
Because connection between boiler exhaust systems and cargo containment arrangements is forbidden under the IBC Code.
Drip trays are provided in way of the cargo manifold on the vast majority of LNG carriers. What is the main purpose of having this drip tray?
To minimise cargo losses during disconnection of hard arms at completion of loading and discharging.
To allow blanking plates and fastenings to be stored ready for fitting after disconnection of hard arms.
To minimise the risk of pollution in the event of a minor spillage during disconnection of hard arms.
To minimise the risk of extremely cold cargo from spilling onto the deck, which may damage the ship's structure, when disconnecting hard arms.
What is the legal requirement in respect of Material Safety Data Sheets for cleaning chemicals that are used on chemical tankers?
There is no requirement for MSDS for cleaning chemicals. The requirement refers only to Noxious Liquid Substances carried as cargoes.
MSDS must only be supplied for cleaning chemicals that have a significant health or flammability hazard. No MSDS is required for detergents or other light, non-hazardous products.
MSDS must only be supplied for cleaning chemicals when the quantity carried of any individual product would, if used all at once, present a significant pollution hazard,
MSDS must be displayed on board for every cleaning chemical in use.
How many rescue boats should be provided on passenger ships of 500 gross tons and above?
Two, one on each side of the ship
Two, and at least one of the rescue boats shall be a Fast Rescue Boat
None
One Fast Rescue Boat
During inspection of the crankshaft of a medium speed diesel engine cracks are discovered at one of the main journal pins. The cracks originate from one of the oil holes and are progressing along the pin at approximately 45 degrees to the axis. From the options given select the most likely failure mode that would cause this.
Torsional fatigue due to excessive torsional vibration in the crankshaft.
Shear due to excessive loading of the crankshaft.
Fatigue due to repeated excessive bending of the crankshaft.
Erosion due to excessive oil flow through the oil hole in the crankshaft pin.
Which of the following foods will increase the cholesterol levels in the blood if eaten in excessive quantities?
Pork
Chicken
Vegetables
Fish
A 2 term controller is used to control the fuel oil temperature for a thermal oil system used for heating services. The control is very unstable with the measured value hunting constantly. Select the most probable cause of this problem from the options given.
Integral action reset time is set too slow.
Proportional band width is set too wide.
Proportional band width is set too narrow.
Integral action reset time is set too fast.
Why do we use stabilisers on passenger ships?
To adjust the trim of the vessel
To decrease the dynamic stability
To increase the intact stability
To decrease the rolling angle of the vessel
This graphical symbol is a logic gate. Which gate?
AND
OR
NOR
NAND
What does ‘wedging’ achieve in side-rolling hatch covers?
It facilitates lowering of the panels for closing
It forces the compression bar on one panel to fit against the seal on the opposite panel
It facilitates the automatically wedging of hatch cover panels
It facilitates the automatic cleating of hatch cover panels
What is a hydraulic hand pump usually used for?
A hydraulic hand pump is usually used to slacken the windlass brake
A hydraulic hand pump is usually used in an emergency to open the hatch covers
A hydraulic hand pump is usually used to steer the ship from the Emergency position
A hydraulic hand pump is usually used to tighten G-nuts
The majority of marine diesel engines operate with either a pulse or a constant pressure turbocharging system. What is the main difference between these two systems?
Pulse systems have all of the cylinder exhausts connected to a common large exhaust gas manifold
Pulse systems always have a turbocharger for each group of three cylinders.
Constant pressure systems have all engine cylinder exhausts connected to a common large exhaust gas manifold.
Constant pressure systems only ever have a single turbocharger irrespective of the number of cylinders on the engine.
What is the meaning of "make fast"
To secure a rope
To coil a rope
To avoid all meals
To act quickly
What distinguishes vapour connections (headers) from liquid cargo connections on a ship's manifold?
Liquid and cargo connections actually appear the same, but the ship's personnel always attach a small board to the applicable flange, identifying the cargo to be loaded and indicating whether it is for the liquid or vapour hose.
Vapour connections are painted yellow with green end bands, are marked with the words "not for liquid" and have a small hole capable of receiving a stud on the flange face at the six o'clock position.
Liquid connections are always marked with the corresponding tank number, while vapour connections are marked with the letter "V".
Vapour connections are painted yellow with red end bands, are marked with the word "vapour" (or "vapor") and have a small stud located on the flange face at the twelve o'clock position.
On which is it compulsory with ODME in connection with the cargo system?
On tankers of 150 gross tonnage and above.
On tankers of 250 gross tonnage and above.
On all tankers irrespective of size.
On tankers of 500 gross tonnage and above.
What is the preferred method of accommodating expansion in cargo pipeline systems on gas carriers?
Use Viking Johnson expansion couplings.
Use sliding couplings.
Use expansion loops.
Use expansion bellows.
What kind of safety equipment should be used when operating a grinding wheel?
Goggles and shield.
Shield.
Welding mask.
Goggles.
Where is a "rose box" fitted on a General Cargo ship?
At the turn of the bilge
At the suction ends of cargo hold bilge pipes
In the engine room bilge system
At the engine room section of the hold bilge system
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
The Otto cycle.
The Rankine cycle.
The Dual cycle
The reversed Carnot cycle.
By what formula is the displacement calculated? W = Displacement; L = length; B = Breadth; D = depth of vessel; Cb = Block Coefficient; Cw = Coefficient of waterplane; RD = relative density;
W = L x B x d x Cb
W = L x B x d x Cw
W = L x B x d x RD
W = L x B x d x RD / Cb
On a Container vessel, why must duty crew members supervise the lashing of containers?
Because stevedores often apply container lashings haphazardly or place twistlocks incorrectly
Because of local port regulations
Because of time constraints on the vessel towards the end of cargo operations
Because it is an international requirement under the ISM Code
What is the required capacity of the inert gas plant?
At a rate of at least 125% of the maximum rate of discharge capacity.
At a rate of at least 150% of the maximum rate of discharge capacity.
At a rate of at least 135% of the maximum rate of discharge capacity.
Sufficient to avoid negative pressure in cargo tanks.
What action should be taken if the boiler water tests show that the pH-value in the boiler water is slightly over 11.5?
Blowdown the boiler and Increase the dosage of boiler water treatment chemicals.
No action is required this is the normal level.
Raise the boiler water level above normal to dilute the contents.
Blowdown the boiler and decrease the dosage of boiler water treatment chemicals.
When maintenance work is to be carried out on an electric motor driving a centrifugal water pump with automatic start, should you;
Ascertain from the senior watchkeeper if it is okay to start work, isolate the valves then commence work.
Set in local control, isolate the suction and delivery valves then commence work.
Isolate the suction and delivery valves then inform the electrician that you are starting work.
In conjunction with the senior watchkeeper and electrician, isolate valves, electrical supply, automatics and post 'Do not operate' signs before commencing work.
To prevent inadvertent leaks, bunker manifold not in use should:
Have blank flanges fitted and tightened with some bolts in place
Have blank flanges fitted with gaskets and tightened with all bolts in place
Have blank flanges fitted with gaskets and tightened with some bolts in place
Have blank flanges fitted and tightened with all bolts in place
When starting three phase induction motors there is sometimes a need to use a star-delta starter. A star-delta starter exhibits which of the following characteristics while connected in star.
Reduced current and increased voltage
Reduced current and reduced torque
Reduced current and reduced voltage
Increased current and power
Which of these statements is incorrect with regard to the loading of bagged fishmeal?
The antioxidant should not be less than 650ppm
The fat content should be less than 15%
The antioxidant should not be less than 100ppm
The moisture content should be between 6 and 12%
On most ro-ro passenger ships there is no requirement to carry out drills with the passengers. What is the most effective ways of informing embarking passengers about the emergency procedures?
Information on boarding cards, public announcement on departure, posters in public areas and cabins, safety video running continuously
Posters in public areas and cabins, safety video running continuously
Information from the crew
Safety video and folders in tax free shops
After discharge of a bulk cargo by grabs, tank tops and lower hopper side plating must be checked for ?
Rusting
Damage and possible leaks
Paint coating loss
Cargo residues
What is the Maximum Securing Load of new fibre ropes?
25% of the breaking strength
30% of the breaking strength
33% of the breaking strength
40% of the breaking strength
When considering how non-containerised perishable cargoes such as bananas and grapes are presented for loading the temperature of the cargo is important. Which one of the statements included in the options is correct?
Bananas and grapes are both loaded pre-cooled.
Bananas and grapes are both loaded at field temperature.
Bananas are loaded at field temperature while grapes are pre-cooled.
Grapes are loaded at field temperature while bananas are pre-cooled.
From the options given, select the one which best completes the following statement. "A seaman who is required to work in a hatch containing perishable goods should wear gloves that are…
…canvas."
…leather palmed."
…clean."
…insulated."
Before commencement of any work aloft, you should carry out risk assessment of the worktask. What kind of extra personal protective equipment is required as a minimum to carry out the work?
Lifeline
Carry out the work without extra personal protective as long as no one sees what's going on
All personnel who are working aloft, where there is a risk of falling more than two metres, should wear a safety harness (or belt with shock absorber) attached to a lifeline.
As long as someone is supporting the ladder there is no need for extra personal protective equipment
Why is grain bundled?
To prevent it from wetting
To prevent bulk grain from shifting
To aid stability
To compact the cargo
What is the correct name of the part highlighted in the sketch?
Exhaust valve
Air inlet valve
Cylinder relief valve
Cylinder head
Large slow speed diesel engines are usually of the crosshead type and have various arrangements to deliver lubricating oil directly to the crosshead bearings and guides to ensure adequate lubrication. Why are the crosshead bearings considered differently to the other bearing in this type of engine in respect of lubrication requirements?
The lubricating oil has further to travel to the crosshead bearing and so a separate arrangement is necessary
The crosshead bearing is more heavily loaded than other bearings in the engine so requires more oil to keep it cool.
The crosshead bearing is closer to the engine cylinder and therefore runs hotter.
The running surfaces oscillate relative to each other during operation rather than rotate and therefore full film hydrodynamic lubrication is not possible.
What does the term 'stoichiometric mixture' mean when used in relation to combustion of hydrocarbon fuels?
A ideal mixture of fuel and air in which all of the fuel in the mixture is consumed during combustion.
An ideal mixture of fuel and air in which all of the fuel in the mixture is consumed during combustion with a minimum of excess air.
An ideal mixture of fuel and air in which all of the fuel and oxygen in the mixture are consumed during combustion.
A ideal mixture of fuel and air in which all of the oxygen in the air in the mixture is consumed during combustion.
On a Container vessel, with regard to raised deck sockets, what must be ensured prior to commencing cargo operations?
They must be clean and free of internal debris
They must be greased
They must be ready to secure the turnbuckles
They must be well painted
Fast rescue boats construction should be:
Inflated
Rigid
Stainless steel
Rigid, inflated or rigid / inflated
What is the most frequent used insulation on cargo tanks?
Expanded Perlite.
Mineral wool.
Polystyrene.
Polyurethane.
The engines have failed and will require at least 24 hours to be available as a reliable means of propulsion. Your vessel is about 20 miles off the coast in a tidal area. What are the initial steps that should be taken to ensure the safety of the ship?
Display NUC lights and determine if anchoring is possible
Display NUC lights and inform the nearest Coast Guard of you predicament.
Display NUC lights and send out a navigational warning to all other vessels of your position and situation
Display NUC lights and investigate the tidal flow over the next 24 hours and the probable drift of the vessel.
How to prevent liquid from getting into the cargo compressor?
By checking the pressure in the vapour line between the cargo tank and the cargo compressor.
By using a liquid condenser on the vapour line between the cargo tank and the compressor.
By checking the temperature on the vapour line between the cargo tank and the cargo compressor.
By using a liquid receiver on the vapour line between the cargo tank and the cargo compressor.
In the diagram, which letter is pointing at the area known as the "BOW" of the ship?
The Bow is indicated by A, in the figure
The Bow is indicated by D, in the figure
The Bow is indicated by C, in the figure
The Bow is indicated by B, in the figure
What is the requirement with respect to pressure/vacuum valves on cargo tanks?
Three valves.
There is no such requirement.
Two valves.
One valve.
After closing the drain during the blowing procedure for a glass water gauge, the water cock is opened and the water flows to the top of the glass. Then the steam cock is opened and the water flows down and out of the glass; Which of the following statements are correct?
The water level is normal, but it requires time for the gauge glass to stabilise. It is safe to put feed water into the boiler.
The water level is between the water cock connection of the boiler, and the bottom of the gauge glass. It is safe to put feed water into the boiler.
The water level is above the steam cock connection of the boiler. There is a danger of priming the boiler if any additional feed is put into it.
The water level in the boiler is below the water cock connection of the boiler. It is unsafe to put feed water into the boiler.
The blower air delivery is not sufficient. What is the cause?
Cooling water temperature too high
Dirty scavenge duct.
Clogged air inlet filter
Air temperature in engine room too high
This online test consists of 90 random questions from CES 5.1 tests on a topic of your choice.