Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 110
When bunkering through the port side of the bunker manifold what action should be taken with the valves on the starboard side of the manifold prior to bunkering operations commencing?
Blank flanges should be fitted to the closed starboard side manifold valves.
Just fit the blank flanges then it doesn’t matter if the valves are closed or not.
The blank flanges should be removed from the starboard side manifold valves to check for any leakage past the closed valves.
Just check that the valves are closed.
Most fuel oil separators working on the centrifuge principle have an automatic start up and sludging facility. Which of the following actions would you expect to occur first during the start up sequence?
Increase the scavenge air temperature to minimise the condensate from the charge air cooler.
Reduce the engine load to minimise condensate from the air cooler.
Ensure that condensate drains from the water separator are monitored and operating correctly.
Decrease the scavenge air temperature to minimise the condensate from the charge air cooler.
What is the minimum furnace temperature that must be reached during start up before waste material can be introduced into an incinerator?
When starting three phase induction motors which of the following starting methods will immediately apply rated voltage to the machine?
Why is it necessary to have an effective ballast water management plan which includes provision for changing out ballast in open water rather than discharging ballast in coastal waters?
To allow ballast tank inspections to be carried out during ballast passage.
To keep the ballast water fresh in the ballast tanks during long voyages.
To ensure that ballast tanks are always pressed up during a ballast voyage to avoid free surface effects.
To avoid the introduction of non-indigenous species of marine life from one area to another.
The water cooling space on a turbocharger is damaged and there is no spare casing. The cooling water must be shut off. Which option would you take to keep the risk of further damage to a minimum?
Dismantle the rotor and assemble the sealing plates.
Run the engine at a lower speed.
Make no modifications, but tell the duty engineer to pay special attention for abnormalities.
Cool the turbocharger by means of air.
The engine turns over normally when starting air is supplied but does not fire even though normal starting rpm is achieved. What could be the probable cause to this?
Air in the fuel oil system.
The turning gear interlock has operated.
The turbocharger has not run up to normal full speed.
The lubricating oil temperature is low.
In the case when the temperature of the ambient air is equal to 10 °C and the wind is blowing at a speed of 10 m/sec the shipwrecked person must consider that the effect of air on his body is equivalent to that of an air whose temperature would be approximately:
Telephones are being used to communicate between personnel onboard and ashore during a bunkering operation. What instruction would you give to ship personnel regarding action to take in the event of failure of the telephone communication during the operation?
Use a crewmember as a messenger between personnel involved in the operation.
Call the electrician, and get him to repair the telephone while the bunkering operation continues.
Slow down the bunkering rate until alternative reliable communications are established.
Stop the bunkering until alternative reliable communications are established.
The main propulsion diesel engine is normally started by direct admission of compressed air. Which one of the following statements is correct?
Percentage of available flow.
Number of consumers running (pumps, etc).
Percentage of maximum pressure being used.
Temperature of hydraulic fluid.
A 3-phase cage rotor induction motor requires protection by a time delay overload trip. What is the reason for this?
It will tolerate fault conditions during start up.
It will allow for inrush current or motor specific faults.
Prior to bunkering operations it is necessary to check the quantity of fuel remaining onboard and that there is sufficient room for the fuel that is to be loaded. What is the best method to use to establish this?
Use the latest figures from the fuel record book.
Do a complete sounding of all fuel bunker tanks.
Sound the tanks which you think might still contain some fuel.
Take a full set of readings from remote content gauges.
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
The reversed Carnot cycle.
How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
Positive displacement pumps operate at constant pressure and cannot be regulated.
Adjustment of the pressure relief valve to recirculate part of the flow.
By throttling the suction valve.
By throttling the discharge valve.
When starting up an aerobic type sewage unit for the first time, of after manual cleaning, how should the bacterial process be initiated?
By adding an activating agent to the inflowing sewage.
By bypassing the grey water inflow and operating only with black water.
By shutting off the air flow.
By filling the unit with sewage and bubbling air through it for 48 hours prior to starting the discharge pump.
The muster list shall show the duties assigned to the different members of the crew. Which of the given duties necessarily have to be included in the muster list?
Preparation and starting of emergency generator.
Preparation and launching of survival crafts.
Type of fires that can be encountered on board.
Which of the following options would be a typical differential pressure setting for a main engine slow down in the event of jacket cooling water system low flow?
The critical part of any bunkering operation may be considered to be when topping off the tanks at which stage the risk of overflow and spillage of fuel oil is greatest. What is the correct safe procedure to adopt to minimise this risk?
Top off all of the tanks together to reduce the inflow rate into each tank.
Watch for oil coming up the sounding pipe and shut the tank valve just before it overflows.
Reduce the bunker delivery flow rate and top off the tanks one at a time.
Shut off each tank as it overflows into the fuel oil overflow tank.
Which one of the following items has to be included in an abandon ship drill according to SOLAS regulations?
Manoeuvring the lifeboat in the water.
Launching and recovery of a survival craft.
Starting and operating radio life-saving appliances.
Checking that life-jackets are correctly donned.
How many rescue boats should be provided on ro-ro passenger ships of 500 gross tons and above?
Two, and at least one of the rescue boats shall be a Fast Rescue Boat.
None providing the ship has lifeboats.
Two Fast Rescue Boats, one on each side of the ship.
In the event of a diesel engine crankcase explosion which of the safety devices fitted to the engine is designed to minimise the risk of a secondary explosion?
Main bearing temperature monitoring equipment.
Crankcase extraction fan.
Crankcase oil mist detector.
Crankcase relief valves/doors.
Cargo gear/cranes should at regular intervals be thoroughly examined and load tested by a recognised company/yard. How often should such examination/load test take place?
In a smoke filled alleyway where will the cleanest air be found, and how should you proceed out?
Near to the deck, crawl out keeping your face as near to the deck as possible.
Sit and wait for the rescue party.
It will be the same in all parts, therefore I would just leave as quickly as possible.
Towards the upper part, stand as tall as possible and walk out.
How will continuous low load operation influence the time between overhauls, tbo, for the cylinder covers and associated valves of a 4-stroke diesel engine?
Reduce the time between overhauls due to increased fouling.
Increase the time between overhauls since fuel injectors work better at low load so combustion will be improved and the maintenance will be reduced.
No influence at all, the required overhauls are unaffected by operating load.
Increase the time between overhauls since the engine is not working as hard.
A water heating system with automatic temperature control uses steam as the heating medium and the temperature is controlled by a pneumatically operated valve? What would be an acceptable start up procedure of the system from cold state?
Start the system up in manual mode and gradually increase the controller output signal until the temperature reaches the required value before changing over to automatic control.
Start with the control valve in manual and use the hand jack to gradually increase the temperature by throttling the steam flow before changing to pneumatic control.
Start the system up in automatic mode with normal set point but with the steam supply to the control valve manually throttled in.
To make a “call-request” one should:
Select the telex in on-line position.
Select the ID of the NCS.
Select the telex in off-line position.
Maintenance is to be carried out on a diesel engine. How long after stopping the engine should the cooling water and lubricating oil be kept circulating in order to avoid any undue thermal stress from residual heat?
10 minutes is sufficient.
The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, connected in parallel. Calculate the equivalent L(S) of the two inductors:
Which is the “Fairlead”, in the figure?
The Fairlead is indicated by C, in the figure.
The Fairlead is indicated by D, in the figure.
The Fairlead is indicated by B, in the figure.
The Fairlead is indicated by A, in the figure.
A combustible gas indicator of the catalytic filament type is used to check the atmosphere in an enclosed space onboard ship. When taking readings in a fuel tank which has been emptied for cleaning the meter reading initially rises and then falls back to zero. What is the likely defect, if any, in the instrument when this type of behaviour is displayed?
The sampling pump is faulty.
The filament is contaminated due to too high a concentration of hydrocarbons.
The filament has burnt out.
What is the colour of the smoke signal used by life-saving stations or rescue units indicating that distress signals are observed in daylight?
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
The reversed Carnot cycle.
You are in charge of a night bunkering operation. The delivery rate from the supplier is high and you are filling six tanks simultaneously. You lose track of the progress of the operation and feel that you are losing control of the situation. What action should you take?
Prepare yourself and the crew for an overflow.
Open more tanks to slow down the filling rate of individual tanks.
Stop bunkering, and establish facts, before bunkering is resumed.
Request a reduction in the delivery rate to try and gain some time.
What is the main precaution to be taken prior to engaging the turning gear for a diesel engine?
Open the indicator cocks.
Open the crankcase doors.
Transfer main engine control from control room to emergency control console.
Isolate the starting air supply.
What should be the status of the suction and discharge valves when starting a centrifugal pump?
Suction valve open and discharge valve closed.
Suction valve closed and discharge valve open.
What contributes most to rust formation on vehicles/Ro-Ro units?
Cargo hold ventilation systems and associated ducting.
Pipes passing through cargo holds.
Hydraulic units in cargo holds.
What is a steering wheel?
A helm used to steer the ship.
A drum for heaving of ropes.
Another name for a lifebuoy.
What is the required pressure when testing parts of the oil transfer system (hoses, loading arms etc.) if the test is to satisfy US Coast Guard regulations?
Test pressure equal to 1,75 times the maximum allowable working pressure.
Test pressure equal to 1,25 times the maximum allowable working pressure.
Test pressure equal to 1,5 times the maximum allowable working pressure.
Test pressure equal to the maximum allowable working pressure.
What effect would turbulent fluid flow through a heat exchanger have on the efficiency of the heat transfer?
Turbulent fluid flow generally increases heat transfer efficiency.
It cannot be determined since it is not possible to generate turbulent fluid flow through a heat exchanger.
Turbulent fluid flow generally reduces heat transfer efficiency.
Heat transfer efficiency is not affected by the type of fluid flow through the heat exchanger.
Some new maintenance routines are being planned and a risk assessment is necessary so that the required procedures can be entered into the ship’s Safety Management manual. Which of the following should be the first step in this risk assessment process?
Identify the hazards that may exist which may affect personnel involved with the maintenance routines.
Identify the safety precautions that may be necessary to prevent injury or harm to personnel carrying out the routines.
Identify who may be harmed or injured in carrying out the maintenance routines.
Identify how much it will cost to implement the necessary precautions to prevent injury to personnel.
The image shows an indicator diagram taken from a diesel engine cylinder. Which of the following options is the action most likely to identify the fault?
Check that the fuel temperature and viscosity are correct.
Check if the fuel injection valve is partly blocked.
Check if the fuel pump injection is too early, or fuel pump lead is too great, for that cylinder.
What is understood by the term “take the helm”?
Take over the steering of the ship.
Take a message to another officer.
Take over heaving of a rope.
Change the place where the lookout is standing.
Which class of emission is used for FEC NBDP transmissions?
Consider a vessel with a 6 cylinder main diesel engine operating with one cylinder out of operation. What would you expect to be the approximate maximum reduced engine load to allow safe emergency operation in this condition?
Approximately 50 % of MCR.
Approximately 70 % of MCR.
Approximately 30 % of MCR.
Approximately 90 % of MCR.
How often should the lifeboat wire falls be turned and renewed?
Turned at intervals of not more than 30 months and renewed every 5 years.
Turned every 2 years and renewed every 4 years.
Turned every 30 months and needs only to be renewed if the wire is in poor condition.
Which of the following symptoms would indicate that the filter drier in a refrigeration circuit has become blocked?
A large temperature drop across the drier.
A pressure rise before the drier.
A hammering noise from the drier.
During mooring operations which is the safe place to be in?
Outside the colored zone.
Behind the “point of restraint” but inside the zone.
Between the “point of break” and the “point of restraint”.
Where ever you feel safe.
How is the prime mover load normally kept to a minimum when starting up an electric driven reciprocating type air compressor?
By using an unloading device to keep the compressor suction valves open until the machine is up to speed.
By using an unloading device to keep the compressor delivery valves open until the machine is up to speed.
By keeping the main discharge valve closed until the machine is up to speed.
By keeping the second stage drain valve open until the machine is up to speed.
This circuit consists of two resistances, R1 = 6 ohm and R2 = 12 ohm, connected in series. Calculate the equivalent resistance R(S) of the two resistances.
The turbocharger on a diesel engine is surging. Which one of the following options would be the most likely cause?
The lubrication oil pump is malfunctioning.
Dirty rotor blades and nozzle ring.
Worn out bearings on the turbocharger.
Dirty scavenging air cooler on the air side.
What are we seeing here?
A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head on.
A sailing vessel, seen from astern, where the edges of her sidelights are both visible.
A sailing vessel of less than 10 metres in length, displaying the mandatory combined lantern in lieu of sailing lights, seen head-on.
A sailing vessel, at anchor.
When starting air is applied to a diesel engine the engine fails to turn over but is seen to oscillate back and forth. What is the most likely cause of this problem?
Starting air pressure is too low.
One or more cylinder air start valves are stuck open.
An interlock is blocking the air to the starting air distributor.
The automatic valve has failed to open.
Many large, slow speed diesel engines have direct oil cooling of the piston crowns provided. An automatic slow down and alarm are sometimes fitted to protect against failure of this system. Which parameter is usually used to initiate this slow down?
Low pressure in the cooling oil return line.
Low flow or no flow in the cooling oil return line.
High temperature of the piston crown.
Which one of the listed requirements regarding fire protected lifeboats do not correspond to present regulations? Water spray systems shall:
Have separate draining pumps of sufficient capacity.
Be arranged for flushing with fresh water and allowing complete draining.
Protect the occupants through a continuous oil fire for a period of not less than 8 minutes.
Have means for “turn on/turn off” the flow of water over the exterior of the lifeboat.
The piston rod of a large two stroke diesel engine has been damaged and is heavily scored in way of the piston rod gland (stuffing box). It has been decided that it is economically viable to recondition the rod at a shoreside facility. Select, from the options given, the most suitable repair method that should be used?
Recondition the rod by surface grinding and build up using plasma spraying with metal similar to the original.
Recondition the rod by build up using electric arc welding and surface grinding.
Recondition the rod by machining away the score marks and fit undersize rings to the stuffing box.
HEL-H is the abbreviation of a heavy helicopter radius of action for rescue purposes. What do you think the radius and evacuating capacity of the helicopter is?
100 nm and capacity for evacuating more than 10 persons.
500 nm and capacity for evacuating more than 25 persons.
200 nm and capacity for evacuating more then 15 persons.
Which of the given options characterizes a 2-stroke diesel engine?
The piston always has a short skirt.
A 2-stroke engine always has 2 or more turbochargers.
A 2-stroke engine has an air inlet valve in the cylinder cover.
A 2-stroke engine completes a full cycle every revolution.
A compressed air supply system has two automatically controlled air compressors. When demand is high both compressors are needed to meet the delivery requirements. What is the best method for controlling the compressors to meet a varying, but intermittent demand?
One compressor running continuously with the other on standby.
Start and stop of the compressors controlled by timer switches.
Continuous running of both compressors and the use of unloading devices.
Sequential start initiated by pressure switches set at different switching pressures.
What should the expansion valve superheat setting be in order to get the best possible efficiency from a refrigerator evaporator?
Which one of the options given is the most likely cause of a diesel engine failing to turn on air when the start signal is initiated?
An interlock or blocking device in the remote starting system is operating.
Start air compressor has cut out due to sufficient pressure in system.
Slight leakage at the indicator cocks.
Auxiliary blower is operating.
Give the meaning of the following symbol:
Rescue boat with waterproof canopy.
According to 33 CFR 156, oil tankers trading in US waters are required to test and document the testing of cargo transfer hoses and transfer pipe system. What is the minimum requirement when testing these components?
That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.
That no leakage occurs under dynamic fluid pressure of less than 1,5 times the maximum allowable working pressure.
That no leakage occurs at the nominal anticipated working pressure.
That no leakage occurs under static liquid pressure of at least 1,25 times the maximum allowable working pressure.
There are many types of pumps fitted onboard ship which an engine room rating may be required to assist with the maintenance of. Which type of pump is shown in the illustration?
When trying to reverse a large slow speed diesel engine in the astern direction it cannot be turned on air even though it will start in the ahead direction. What is the likely cause of this problem?
The reversing servo for the fuel pumps has stuck in the ahead position.
One of the cylinder air start valves has stuck open.
The start is blocked because the air distributor has not moved to the astern position.
The charge air pressure supplied to a diesel engine, which is normally 2,0 bar, is reduced to 1,5 bar. What will be the likely effect on the engine operation?
The cylinder cooling water flow will increase.
The performance of the engine will be reduced noticeably.
The performance of the engine will be similar to normal conditions.
The turbochargers cooling water flow will increase.
A vessel is scheduled to enter a SECA during a forthcoming voyage? What additional considerations must a Chief Engineer take into account when planning for this voyage?
That the incinerator is shut down for the duration of the time the vessel is in the SECA.
That there is sufficient room in the bilge holding tank to ensure no discharges of machinery space bilges takes place while the vessel is in the SECA.
The availability of low sulphur fuel and the change over time required to ensure the system is clear of normal fuel prior to entry into the SECA.
That all garbage is fully disposed of prior to entry into the SECA and suitable arrangements are made for retention while in the SECA.
The main engine is running steady with an average exhaust gas temperature of approximately 350 °C. What would be a typical alarm/slow down setting for the cylinder exhaust gas temperature deviation from the average?
How long after starting a refrigeration compressor should the oil separator return valve be opened?
It should be opened one minute after start up.
It should be opened only when the crankcase oil level is low.
It should be opened once the oil separator unit has warmed up.
It should be opened before start up.
What is the correct name of the tool shown in the sketch?
Maintenance is to be carried out on a diesel engine. How long after stopping the engine should the cooling water and lubricating oil be kept circulating in order to avoid any undue thermal stress from residual heat?
10 minutes is sufficient.
This circuit consists of two capacitors, C(1) = 6 μF and C(2) = 12 μF, in series. Calculate the equivalent C(S) of the two capacitors.
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 always have a turbocharger for each group of three cylinders.
Pulse systems have all of the 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.
Constant pressure systems have all engine cylinder exhaust connected to a common large exhaust gas manifold.
On a container vessel, where should a mid-bay guide be positioned?
On the tank top mid-way in 40′ guides to prevent transverse movement of 20′ containers.
On the tank top at the ends of 40′ container bays.
At the base of cell guides.
Between 20′ container bays on deck.
Spray painting has been carried out in the engine room while the engine was running, and the turbocharger intake filter was not protected. Which one of the options given is most likely to result from this?
Scavenge air pressure lower than normal.
The revolution of the turbocharger lower than normal.
Scavenging air pressure is higher than normal.
Exhaust gas temperatures lower than normal.
You have to choose one of the following instruments for measuring pressure in an air bottle in measuring range 0-35 BAR. Which instrument would you install?
What is polymerisation?
The process by which unsaturated chemical compounds are heated under pressure, causing the molecules to react with each other and form larger molecules.
The process by which the molecules in unsaturated chemical compounds react with each other during cooling, forming larger molecules.
The process by which saturated chemical compounds are heated under pressure, causing the molecules to react with each other and form smaller molecules.
The process by which saturated chemical compounds react as pressure is released during heating, causing the molecules to react with each other and form larger compounds.
According to SOLAS Regulation all dedicated seawater ballast tanks on oil tankers shall have an efficient corrosion prevention system such as hard protective coatings or equivalent. With regard to coatings do SOLAS set any requirement to colour?
Preferably light red colour.
What do you understand by the term Maximum Continuous Rating, MCR, of a diesel engine?
The maximum speed that the engine can operate at continuously.
The maximum load that the engine can operate at continuously.
The maximum cylinder pressure that the engine can operate at continuously.
The maximum charge air pressure that the engine can operate at continuously.
What could be the possible cause of an engine knocking?
Faults in injection valves, injection too early.
Too big a piston clearance, worn cylinder liner.
The gudgeon pin or big end bearing having too big a clearance.
When planning bunkering operations it is preferable to arrange for the new fuel to be bunkered into empty or nearly empty tanks whenever possible. What is the main reason for this?
So that the sulphur content of each fuel is known.
To minimise the risk of microbial contamination of the fuel.
To make it easier to calculate the quantity of fuel taken onboard.
To minimise the risk of incompatibility between different fuels.