Test online for seamans about Deck department, Management level, Bulk Carrier (CES v6.0)
Test results
The test consisted of 80 random questions.
Total questions on this topic: 110
Total questions on this topic: 110
Your result: 96%
Right answers:
1
How is the prime mover load normally kept to a minimum when starting up an electric driven reciprocating type air compressor?
Your answer is correct:
By using an unloading device to keep the compressor suction valves open until the machine is up to speed.2
What is a steering wheel?
Your answer is correct:
A helm used to steer the ship.3
What is the colour of the smoke signal used by life-saving stations or rescue units indicating that distress signals are observed in daylight?
Your answer is correct:
Orange.4
What is the minimum furnace temperature that must be reached during start up before waste material can be introduced into an incinerator?
Your answer is correct:
850 °C.5
In a smoke filled alleyway where will the cleanest air be found, and how should you proceed out?
Your answer is correct:
Near to the deck, crawl out keeping your face as near to the deck as possible.6
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
Your answer is correct:
The reversed Carnot cycle.7
Which of the given options characterizes a 2-stroke diesel engine?
Your answer is correct:
A 2-stroke engine completes a full cycle every revolution.8
What would the results of a TAN test, carried out on lubricating oil samples from a diesel engine, indicate?
Your answer is correct:
A measure of the organic and inorganic acids in the lubricating oil.9
What is the correct name of the tool shown in the sketch?
Your answer is correct:
Flat file.10
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.
Your answer is correct:
C(S) = 4 μF.11
What should the expansion valve superheat setting be in order to get the best possible efficiency from a refrigerator evaporator?
Your answer is correct:
5-10 °C.12
A diesel engine is operating with retarded fuel timing resulting in increased exhaust gas temperatures. How would you expect this to affect the turbocharger?
Your answer is correct:
Increased turbocharger revolutions.13
What contributes most to rust formation on vehicles/Ro-Ro units?
Your answer is correct:
Cargo hold ventilation systems and associated ducting.14
Which is the “Fairlead”, in the figure?
Your answer is correct:
The Fairlead is indicated by C, in the figure.15
When will a ro-ro vessel pitch heavily?
Your answer is correct:
When wave lengths are equal to the ship’s length.16
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?
Your answer is correct:
A work rota is established to ensure full coverage of engine room watchkeeping duties and adequate rest periods for the engineering staff.17
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?
Your answer is correct:
Stop the bunkering until alternative reliable communications are established.18
Why is it important to reduce the diesel engine load during in service water washing of the turbocharger gas side?
Your answer is correct:
To prevent damage to the turbine blades.19
What is understood by the term “take the helm”?
Your answer is correct:
Take over the steering of the ship.20
On a container vessel, where should a mid-bay guide be positioned?
Your answer is correct:
On the tank top mid-way in 40′ guides to prevent transverse movement of 20′ containers.21
Which statement about the use of profiling onboard a ship is true?
Your answer is correct:
A random selection process must be established.22
When lashing general cargoes why are short lashings preferred to long ones?
Your answer is correct:
Because they are more easily tightened and held in tension.23
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?
Your answer is correct:
Operating water supplied to bowl to close it.24
How is the prime mover load normally kept to a minimum when starting up an electric driven reciprocating type air compressor?
Your answer is correct:
By using an unloading device to keep the compressor suction valves open until the machine is up to speed.25
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?
Your answer is correct:
A centrifugal pump.26
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?
Your answer is correct:
Operate the engine room on manual mode until the maintenance is completed and the cooling pump is operational and switched to stand-by mode.27
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?
Your answer is correct:
Engine speed control.28
What effect would turbulent fluid flow through a heat exchanger have on the efficiency of the heat transfer?
Correct answer:
Turbulent fluid flow generally increases heat transfer efficiency.Your Answer:
Turbulent fluid flow generally reduces heat transfer efficiency.29
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?
Your answer is correct:
Test pressure equal to 1,5 times the maximum allowable working pressure.30
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?
Your answer is correct:
Stop bunkering, and establish facts, before bunkering is resumed.31
What are we seeing here?
Your answer is correct:
A sailing vessel less than 20 metres in length, displaying the optional combined lantern in lieu of standard sailing lights, seen head on.32
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?
Your answer is correct:
To help to maintain the oil/water interface at the correct position.33
When starting up an aerobic type sewage unit for the first time, of after manual cleaning, how should the bacterial process be initiated?
Your answer is correct:
By adding an activating agent to the inflowing sewage.34
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?
Your answer is correct:
Low flow or no flow in the cooling oil return line.35
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?
Your answer is correct:
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.36
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?
Your answer is correct:
Air in the fuel oil system.37
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:
Your answer is correct:
30 months/5 years.38
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.
Your answer is correct:
R(S) = 18 ohm.39
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?
Your answer is correct:
Blank flanges should be fitted to the closed starboard side manifold valves.40
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?
Your answer is correct:
+/- 50 °C.41
A High Breaking Capacity fuse found in a Main High Voltage Switchboard will typically have fault level rating of?
Your answer is correct:
40 kA.42
Which one of the listed requirements regarding fire protected lifeboats do not correspond to present regulations? Water spray systems shall:
Your answer is correct:
Have separate draining pumps of sufficient capacity.43
A 3-phase cage rotor induction motor requires protection by a time delay overload trip. What is the reason for this?
Your answer is correct:
It will allow for inrush current or motor specific faults.44
Which one of the following items has to be included in an abandon ship drill according to SOLAS regulations?
Your answer is correct:
Checking that life-jackets are correctly donned.45
How often should the lifeboat wire falls be turned and renewed?
Your answer is correct:
Turned at intervals of not more than 30 months and renewed every 5 years.46
When starting three phase induction motors which of the following starting methods will immediately apply rated voltage to the machine?
Your answer is correct:
Direct on Line.47
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?
Your answer is correct:
One or more cylinder air start valves are stuck open.48
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?
Your answer is correct:
At least one hour.49
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?
Your answer is correct:
Identify the hazards that may exist which may affect personnel involved with the maintenance routines.50
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?
Your answer is correct:
Crankcase relief valves/doors.51
How many rescue boats should be provided on ro-ro passenger ships of 500 gross tons and above?
Your answer is correct:
Two, and at least one of the rescue boats shall be a Fast Rescue Boat.52
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?
Your answer is correct:
Slightly superheated low pressure gas.53
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?
Your answer is correct:
Dismantle the rotor and assemble the sealing plates.54
What is polymerisation?
Correct answer:
The process by which unsaturated chemical compounds are heated under pressure, causing the molecules to react with each other and form larger molecules.Your Answer:
The process by which the molecules in unsaturated chemical compounds react with each other during cooling, forming larger molecules.55
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?
Your answer is correct:
Approximately 70 % of MCR.56
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?
Your answer is correct:
Engine speed control will be sluggish.57
What is the purpose of the air distributor in a diesel engine air start system?
Your answer is correct:
To ensure the cylinder air start valves operate in the correct sequence and for the correct period.58
Which of the following symptoms would indicate that the filter drier in a refrigeration circuit has become blocked?
Your answer is correct:
A large temperature drop across the drier.59
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?
Your answer is correct:
The start is blocked because the air distributor has not moved to the astern position.60
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?
Your answer is correct:
0,2 to 0,5 bar.61
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?
Your answer is correct:
Preparation and launching of survival crafts.62
What do you understand by the term Maximum Continuous Rating, MCR, of a diesel engine?
Your answer is correct:
The maximum load that the engine can operate at continuously.63
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?
Your answer is correct:
Bourdon Tube manometer.64
According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:
Your answer is correct:
The sea areas.65
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?
Your answer is correct:
Reduce the time between overhauls due to increased fouling.66
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?
Your answer is correct:
Constant pressure systems have all engine cylinder exhaust connected to a common large exhaust gas manifold.67
For a ship operating or calling in US waters, COTP can request (OPA-90)?
Your answer is correct:
Unannounced drills at any time.68
How long after starting a refrigeration compressor should the oil separator return valve be opened?
Your answer is correct:
It should be opened once the oil separator unit has warmed up.69
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?
Correct answer:
Ensure that condensate drains from the water separator are monitored and operating correctly.Your Answer:
Reduce the engine load to minimise condensate from the air cooler.70
What does the term “stoichiometric mixture” mean when used in relation to combustion of hydrocarbon fuels?
Your answer is correct:
An ideal mixture of fuel and air in which all of the fuel and oxygen in the mixture are consumed during combustion.71
Which of the following terms is used to describe a thermodynamic process in which no heat transfer into or out of the system occurs?
Your answer is correct:
Adiabatic.72
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?
Your answer is correct:
Stop the washing process and not resume until the oxygen content in the tank below 8 %.73
What types of fire extinguishers shall be used in the engine room?
Your answer is correct:
Fire extinguishers equipped for powder or CO2 only.74
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:
Your answer is correct:
0 °C.75
On board a DSC-call is to be made in case of an OBS. Choose the category:
Your answer is correct:
Routine.76
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?
Your answer is correct:
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.77
How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
Your answer is correct:
Adjustment of the pressure relief valve to recirculate part of the flow.78
Give the meaning of the following symbol:
Your answer is correct:
Start water-spray.79
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?
Your answer is correct:
That no leakage occurs under static liquid pressure of at least 1,5 times the maximum allowable working pressure.80