Test online for seamans about Deck department, Management level, Bulk Carrier (CES v6.0)
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Тест состоял из 80 случайных вопросов.
Всего вопросов по данной теме: 110
Всего вопросов по данной теме: 110
Ваш результат: 86%
Правильные ответы:
1
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.
Ваш ответ правильный:
C(S) = 4 μF.2
During mooring operations which is the safe place to be in?
Ваш ответ правильный:
Outside the colored zone.3
What contributes most to rust formation on vehicles/Ro-Ro units?
Правильный ответ:
Cargo hold ventilation systems and associated ducting.Ваш ответ:
Vehicles loaded wet.4
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
Ваш ответ правильный:
The reversed Carnot cycle.5
What are we seeing here?
Ваш ответ правильный:
A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head on.6
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?
Ваш ответ правильный:
Test pressure equal to 1,5 times the maximum allowable working pressure.7
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?
Ваш ответ правильный:
Ensure that condensate drains from the water separator are monitored and operating correctly.8
The main propulsion diesel engine is normally started by direct admission of compressed air. Which one of the following statements is correct?
Правильный ответ:
Percentage of available flow.Ваш ответ:
Percentage of maximum pressure being used.9
Some fuel oil and lubricating oil separators have a facility to control the back pressure of the clean oil outlet during start up and operation. What is the purpose of this control function?
Ваш ответ правильный:
To help to maintain the oil/water interface at the correct position.10
To make a “call-request” one should:
Ваш ответ правильный:
Select the telex in on-line position.11
Which of the given options characterizes a 2-stroke diesel engine?
Ваш ответ правильный:
A 2-stroke engine completes a full cycle every revolution.12
When starting up an aerobic type sewage unit for the first time, of after manual cleaning, how should the bacterial process be initiated?
Правильный ответ:
By adding an activating agent to the inflowing sewage.Ваш ответ:
By filling the unit with sewage and bubbling air through it for 48 hours prior to starting the discharge pump.13
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?
Правильный ответ:
Constant pressure systems have all engine cylinder exhaust connected to a common large exhaust gas manifold.Ваш ответ:
Constant pressure systems only ever have a single turbocharger irrespective of the number of cylinders on the engine.14
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?
Ваш ответ правильный:
At least one hour.15
A vessel which normally operates with the engine room in UMS mode is unable to do so because of defects to some of the critical alarm functions. What are the main considerations that the Chief Engineer must take into account when planning alternative arrangements to cover the engine room requirements until the defects are cleared?
Ваш ответ правильный:
A work rota is established to ensure full coverage of engine room watchkeeping duties and adequate rest periods for the engineering staff.16
Why is it important to reduce the diesel engine load during in service water washing of the turbocharger gas side?
Ваш ответ правильный:
To prevent damage to the turbine blades.17
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?
Ваш ответ правильный:
One or more cylinder air start valves are stuck open.18
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?
Ваш ответ правильный:
Scavenge air pressure lower than normal.19
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?
Ваш ответ правильный:
Preferably light colour.20
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?
Ваш ответ правильный:
Stop the bunkering until alternative reliable communications are established.21
How is the prime mover load normally kept to a minimum when starting up an electric driven reciprocating type air compressor?
Ваш ответ правильный:
By using an unloading device to keep the compressor suction valves open until the machine is up to speed.22
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?
Ваш ответ правильный:
Reduce the bunker delivery flow rate and top off the tanks one at a time.23
What should the expansion valve superheat setting be in order to get the best possible efficiency from a refrigerator evaporator?
Ваш ответ правильный:
5-10 °C.24
How often should the lifeboat wire falls be turned and renewed?
Ваш ответ правильный:
Turned at intervals of not more than 30 months and renewed every 5 years.25
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?
Ваш ответ правильный:
Air in the fuel oil system.26
What is the colour of the smoke signal used by life-saving stations or rescue units indicating that distress signals are observed in daylight?
Ваш ответ правильный:
Orange.27
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?
Ваш ответ правильный:
An interlock or blocking device in the remote starting system is operating.28
What does the term “stoichiometric mixture” mean when used in relation to combustion of hydrocarbon fuels?
Ваш ответ правильный:
An ideal mixture of fuel and air in which all of the fuel and oxygen in the mixture are consumed during combustion.29
According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:
Ваш ответ правильный:
The sea areas.30
How is the prime mover load normally kept to a minimum when starting up an electric driven reciprocating type air compressor?
Ваш ответ правильный:
By using an unloading device to keep the compressor suction valves open until the machine is up to speed.31
When starting three phase induction motors which of the following starting methods will immediately apply rated voltage to the machine?
Ваш ответ правильный:
Direct on Line.32
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?
Ваш ответ правильный:
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.33
A High Breaking Capacity fuse found in a Main High Voltage Switchboard will typically have fault level rating of?
Ваш ответ правильный:
40 kA.34
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?
Ваш ответ правильный:
+/- 50 °C.35
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?
Ваш ответ правильный:
That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.36
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?
Ваш ответ правильный:
200 nm and capacity for evacuating more then 15 persons.37
A diesel engine is operating with retarded fuel timing resulting in increased exhaust gas temperatures. How would you expect this to affect the turbocharger?
Ваш ответ правильный:
Increased turbocharger revolutions.38
How long after starting a refrigeration compressor should the oil separator return valve be opened?
Правильный ответ:
It should be opened once the oil separator unit has warmed up.Ваш ответ:
It should be opened before start up.39
During crude oil washing of No: 1C tank the duty deck officer reports that the oxygen reading in the tank is 9 %. What should you do?
Ваш ответ правильный:
Stop the washing process and not resume until the oxygen content in the tank below 8 %.40
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?
Ваш ответ правильный:
Do a complete sounding of all fuel bunker tanks.41
What effect would turbulent fluid flow through a heat exchanger have on the efficiency of the heat transfer?
Ваш ответ правильный:
Turbulent fluid flow generally increases heat transfer efficiency.42
Which of the following terms is used to describe a thermodynamic process in which no heat transfer into or out of the system occurs?
Ваш ответ правильный:
Adiabatic.43
What could be the possible cause of an engine knocking?
Ваш ответ правильный:
Any of the below.44
In a smoke filled alleyway where will the cleanest air be found, and how should you proceed out?
Ваш ответ правильный:
Near to the deck, crawl out keeping your face as near to the deck as possible.45
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?
Ваш ответ правильный:
Stop bunkering, and establish facts, before bunkering is resumed.46
How many rescue boats should be provided on ro-ro passenger ships of 500 gross tons and above?
Ваш ответ правильный:
Two, and at least one of the rescue boats shall be a Fast Rescue Boat.47
What is polymerisation?
Ваш ответ правильный:
The process by which unsaturated chemical compounds are heated under pressure, causing the molecules to react with each other and form larger molecules.48
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?
Ваш ответ правильный:
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.49
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?
Правильный ответ:
The filament is contaminated due to too high a concentration of hydrocarbons.Ваш ответ:
The sampling pump is faulty.50
The operation of a diesel engine is controlled by a mechanical-hydraulic, compensated speed sensing governor. How will the governor control be affected if the compensation needle valve is closed in and the engine load changes?
Ваш ответ правильный:
Engine speed control will be sluggish.51
When is it compulsory to use emergency wires/fire wires for mooring the vessel?
Правильный ответ:
During loading/discharging of persistent/non-persistent oil.Ваш ответ:
At the terminals in Canada and USA.52
One of the Main Engine cooling pumps is down for maintenance. The rest of the cooling pumps are operating near full capacity with minimum margins on the maximum temperature limit. What should be the correct action to take with regard to UMS operation?
Ваш ответ правильный:
Operate the engine room on manual mode until the maintenance is completed and the cooling pump is operational and switched to stand-by mode.53
How does the maximum oil film pressure in a white metal journal bearing operating under full fluid film conditions compare with the pressure of the lubricating oil supply system?
Ваш ответ правильный:
The pressure is greater than the pressure in the lubricating system and varies with the journal load.54
Which of the following symptoms would indicate that the filter drier in a refrigeration circuit has become blocked?
Правильный ответ:
A large temperature drop across the drier.Ваш ответ:
A pressure rise before the drier.55
What is understood by the term “take the helm”?
Ваш ответ правильный:
Take over the steering of the ship.56
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?
Ваш ответ правильный:
Reduce the time between overhauls due to increased fouling.57
How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
Ваш ответ правильный:
Adjustment of the pressure relief valve to recirculate part of the flow.58
The cold room temperature is almost at the cut out point in a vapour-compression refrigeration system. What should the refrigerant state be just after the evaporator if the system is correctly set up?
Правильный ответ:
Slightly superheated low pressure gas.Ваш ответ:
Cold liquid at high pressure.59
On board a DSC-call is to be made in case of an OBS. Choose the category:
Правильный ответ:
Routine.Ваш ответ:
Ship’s business.60
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?
Ваш ответ правильный:
Low flow or no flow in the cooling oil return line.61
Falls used in launching shall be turned end for end at an interval of not more than X months and to be renewed not later than every Y years, where the intervals are:
Ваш ответ правильный:
30 months/5 years.62
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?
Ваш ответ правильный:
Blank flanges should be fitted to the closed starboard side manifold valves.63
What is the main precaution to be taken prior to engaging the turning gear for a diesel engine?
Ваш ответ правильный:
Isolate the starting air supply.64
What would the results of a TAN test, carried out on lubricating oil samples from a diesel engine, indicate?
Ваш ответ правильный:
A measure of the organic and inorganic acids in the lubricating oil.65
In which way may intake of poisonous material occur?
Ваш ответ правильный:
All mentioned.66
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?
Ваш ответ правильный:
To minimise the risk of incompatibility between different fuels.67
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?
Ваш ответ правильный:
Operating water supplied to bowl to close it.68
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?
Ваш ответ правильный:
Approximately 70 % of MCR.69
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?
Ваш ответ правильный:
The start is blocked because the air distributor has not moved to the astern position.70
The operation of a diesel engine is controlled by a mechanical-hydraulic, compensated speed sensing governor. How will the governor control be affected if the compensation needle valve is closed in and the engine load changes?
Ваш ответ правильный:
Engine speed control.71
What is the purpose of the air distributor in a diesel engine air start system?
Ваш ответ правильный:
To ensure the cylinder air start valves operate in the correct sequence and for the correct period.72
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?
Ваш ответ правильный:
To avoid the introduction of non-indigenous species of marine life from one area to another.73
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?
Ваш ответ правильный:
Every 5th year.74
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?
Ваш ответ правильный:
0,2 to 0,5 bar.75
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?
Ваш ответ правильный:
Crankcase relief valves/doors.76
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?
Ваш ответ правильный:
Check if the fuel pump injection is too early, or fuel pump lead is too great, for that cylinder.77
For a ship operating or calling in US waters, COTP can request (OPA-90)?
Ваш ответ правильный:
Unannounced drills at any time.78
According to the industry guidelines in the ISGOTT Guide and assuming terminal regulations do not require otherwise, what action should be taken to drain accumulated water from the deck during cargo handling operations in rainy conditions?
Правильный ответ:
The accumulated water is to be drained periodically and the scupper plugs to be immediately closed once the water has been run off. Water containing oily residues is to be transferred to a slop tank or other suitable receptacle.Ваш ответ:
The accumulated water is to be transferred to a spare tank.79
The turbocharger on a diesel engine is surging. Which one of the following options would be the most likely cause?
Ваш ответ правильный:
Dirty scavenging air cooler on the air side.80