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Home Online tests CES All types of vessels Ch-Eng / 2nd-Eng Test Online for Seamans about Engine, Management Level (CES v6.0)
Online testing: Test Online for Seamans about Engine, Management Level (CES v6.0)
Online test
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The test consists of 80 random questions.
Total questions on this topic: 118
Total questions on this topic: 118
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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?
Slightly superheated low pressure gas.
Wet vapour at high pressure.
Sub-cooled liquid at low pressure.
Cold liquid at high pressure.
Power is available at a three-phase motor starter, but nothing happens (at starter or motor) when the start button is operated. Which of the following is a likely cause?
Faulty contactor coil.
Open circuit in one of the motor cables.
Motor disconnected.
Faulty overcurrent relay.
I don’t know.
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?
+/- 50 °C.
+/- 10 °C.
+/- 30 °C.
+/- 80 °C.
Why is an automatic slow turning feature included in the start air system of many large 2 stroke diesel engines?
To avoid damage during start of the engine in case water or other liquid has gathered in the cylinders during an extended stop.
To reduce the start air consumption during start up of the engine.
To check that all indicator cocks are closed before starting engine.
To fill the cylinders with sufficient fresh air to ensure a safe start of the engine.
What is the result of an “unusually large metacentric height”?
The vessel will roll slowly or be unstable.
The vessel will have a great bending moment.
The vessel’s tweendeck heights is too high.
The vessel will roll violently.
Routine maintenance insulation testing of a three-phase induction motor should cover which measurements?
U1-U2, V1-V2, W1-W2, U-E, V-E, W-E.
U-E, V-E, W-E, U-V, V-W, W-U.
U-V-W-E.
AA-E, ZZ-E.
I don’t know.
Oil analysis results for a sample of diesel engine lubricating oil show a high level of tin. What could be the possible cause?
Debris from damage to a white metal bearing.
Debris from damage to a rolling contact bearing.
Cylinder oil contamination of the lubricating oil system.
Debris from fretting between bearing housing parts.
What should be the healthy continuity resistance of a 220 V, 2,2 kW, 10 A heating element, when checked near to it’s rated operating temperature?
22 Ohms.
10 Ohms.
0,1 Ohms.
220 Ohms.
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?
One or more cylinder air start valves are stuck open.
Starting air pressure is too low.
An interlock is blocking the air to the starting air distributor.
The automatic valve has failed to open.
A 250 V contactor has been fitted to a 220 V supply. Which of the following symptoms might be observed?
Contactor won’t operate.
Contactor chattering (vibrating).
Contactor constantly on.
Contactor overheating.
I don’t know.
In a distress situation, how many times or for how long should the emergency alarm signal be sounded?
Until all crew members and passengers have reported to their respective muster stations.
3 times.
Until the signal “risk is over” or the order “abandon ship” is given.
3 minutes.
When the cable length exceeds approx. 10 meters we normally have to, in case of a Pt 100, in some way compensate for the cable resistance. Do we also have to do this if we choose to use a T802 temperature sensor?
No.
Yes.
Depends on temperature to be measured.
Not applicable.
When turning a cascade control system, which of the following actions should be done first?
Adjust the slave controller with the master controller in manual mode.
Adjust both controllers at the same time.
Adjust the slave controller with the master controller in auto mode.
Adjust the master controller with the slave controller disabled.
I don’t know.
Continuity testing of a delta connected three phase induction motor yields the following results: U-V = 3 Ohms, V-W = 3 Ohms, W-U = 6 Ohms. Which of the following is the likely condition?
Short circuit between V and Earth.
Open circuit winding between W and U.
Partial fault between W and U.
Short circuit winding between W and U.
I don’t know.
A medium speed diesel engine is used to drive a controllable pitch propeller through a suitable clutch and reduction gearbox. What should the propeller blade attitude normally be after the engine is started and before the clutch can be engaged?
The blades should be in the zero pitch position.
The blades should be in 20 % pitch position.
The blades should be in the full astern position.
The blades should be in the full ahead position.
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 hammering noise from the compressors.
A hammering noise from the drier.
A pressure rise before the drier.
What is the correct operation of the slow-turning facility fitted to some large 2-stroke main propulsion diesel engines?
Slow turning should be set to operate automatically prior to engine start when engine has been stopped for 20 to 30 minutes during manoeuvring.
Slow turning should be set to operate automatically every 10 to 15 minutes when the engine is on standby.
Slow turning should be carried out immediately the duty engineer gets notice of standby from the bridge.
Slow turning should be set to operate automatically at finish with engines to allow the engine to cool down evenly.
How can a lead-acid type battery be checked to confirm if it is fully charged or not?
Measure the relative density (specific gravity) of the electrolyte.
Measure the battery voltage.
Measure the level of the electrolyte.
Measure the temperature of the electrolyte.
The main propulsion diesel engine is normally started by direct admission of compressed air. Which one of the following statements is correct?
A heavily leaking starting air valve may cause an explosion in the starting air pipe system.
The starting air admission should continue until the engine has fired.
If the engine does not turn when the starting air is applied the turning gear can be used together with starting air to start the engine.
If the starting air pressure is too low a pressurized oxygen bottle from the welding equipment can be used for an emergency start of the engine.
Which one of the listed requirements regarding abandon ship drills corresponds to present SOLAS regulation?
Each lifeboat shall be launched, and maneuvered in the water with its assigned crew at least once every three months during an abandon ship drill.
Drills shall be conducted when the ship is in a harbour.
All lifeboats shall be lowered during drills.
In what kind of measuring equipment might we find a Bourdon-tube?
In a flow meter.
In a pressure transmitter.
In a temperature transmitter.
In an A/D converter.
I don’t know.
When performing electrical testing of a three phase motor, insulation resistance measurements may be influenced by which of the following?
Temperature, humidity and surface contamination.
Humidity, frequency and dampness.
Humidity, pressure and surface contamination.
Between 0,1 micro Ohm and 1,0 micro Ohm.
I don’t know.
The operating mode of a pyrotechnic signal depends essentially on:
Instructions or diagrams printed on its casing by the manufacturer.
The weather conditions of the moment.
The fact that the user is on board a liferaft, a lifeboat or ship.
A definite standard process.
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?
Clearing escape routes.
Preparation and launching of survival crafts.
Type of fires that can be encountered on board.
Preparation and starting of emergency generator.
What is the best way to avoid pollution from small oil-spills aboard a ship?
Contain any oil-spill onboard the ship.
Have dispersing chemicals ready for use in case of oil-spill.
Rig an oil boom around the ship.
Have sawdust ready for use.
In the circuit diagram shown the starter connects between which terminals?
7 and 8.
3 and 4.
1 and 2.
5 and 6.
I don’t know.
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?
To help to maintain the oil/water interface at the correct position.
To reduce the amount of sealing water required during operation.
To control the amount of fuel passing through the separator.
To assist in discharging the bowl contents during the sludge cycle.
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?
The pressure is greater than the pressure in the lubricating system and varies with the journal load.
The pressure is the same as the pressure in the lubricating system regardless of the journal load.
The pressure is greater than the pressure in the lubrication and is constant regardless of the journal load.
The pressure is less than the pressure in the lubricating system and varies with the journal load.
A two step controller (open/close) has failed and the only available spare controller is a P+I controller. Select, from the options given, how the P+I controller could be set up to achieve approximate two step control.
Set the proportional band to maximum width and the integral action to minimum (repeats per minute).
Set the proportional band to minimum width and the integral action to maximum (repeats per minute).
Set the proportional band to minimum width and the integral action to minimum (repeats per minute).
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?
Stop bunkering, and establish facts, before bunkering is resumed.
Open more tanks to slow down the filling rate of individual tanks.
Prepare yourself and the crew for an overflow.
Request a reduction in the delivery rate to try and gain some time.
When measuring level of liquids with a conductivity level indicator, measurement is performed by:
Capacitance probe.
Electrodes.
Ionization chamber.
Displacement probe.
I don’t know.
In case of a pollution in US waters, who shall notify the cleaning up contractor (OPA-90)?
Qualified Individual.
Emergency response team.
The shipowner.
The Master.
The pyrotechnics used to transmit visual signals to other vessels, boats or aircrafts are of the following type:
Rocket parachute flare.
Buoyant smoke signal.
Hand flare.
All of the below mentioned.
A portable oxygen analyser for use onboard ship is of the paramagnetic sensing element type. It is being used to test the atmosphere of a space onboard ship but starts to give erratic readings. There is no obvious indication as to why this is happening. Select from the options given the most likely cause of this problem:
The sampling filter is partially blocked giving rise to wide pressure variations in the sampling chamber.
The battery power is low.
Nitrogen gas is present in the atmosphere.
The sampling filter is blocked preventing gas from entering the sampling camber.
A 3-phase cage rotor induction motor requires protection by a time delay overload trip. What is the reason for this?
Fuses act too quickly.
Fuses act too slowly.
It will allow for inrush current, or motor specific faults.
It will tolerate fault conditions during start up.
I don’t know.
Some ships generate electrical power at 440 Volts, but then step up this voltage to supply specific electrical equipment. One common example, may be to feed a large bow thruster. Why is this done?
A large bow thruster will draw very large currents at low voltage. Being typically remote from the generator, significant voltage drops would occur at low voltage.
The shipyard could not purchase High Voltage generating plant at the time of manufacture, so they used what was available at the time.
The overall ship’s electrical load does not justify High Voltage generating plant. This method allows more power to be delivered to the bow thruster at low running cost.
Manufacturers can supply High Voltage bow thrusters at less cost, and the power factor is improved.
What is the best method for ensuring that the cylinder powers of a high speed diesel engine, fitted with a monoblock multi-cylinder fuel pump, are correctly balanced?
Have the fuel pump phased and calibrated in a test workshop.
Check the exhaust temperatures on each cylinder to see if they are equal.
Measure the maximum pressure of each cylinder to check that they are equal.
Take a set of indicator cards using a mechanical indicator and calculate the cylinder powers.
When measuring viscosity with a restricted flow viscometer, the preferred sensing device is:
Bourdon tube.
Rotating cylinder.
Capillary tube.
Capacitance probe.
I don’t know.
When starting three phase induction motors there is sometimes a need to use a star-delta starter. A star-delta starter exhibits the following characteristics while connected in a star.
Reduced current and increased voltage.
Reduced current and reduced torque.
Increased current and power.
Reduced current and increased speed.
I don’t know.
The turbocharger on a diesel engine is surging. Which one of the following options would be the most likely cause?
Dirty scavenging air cooler on the air side.
Dirty rotor blades and nozzle ring.
The lubrication oil pump is malfunctioning.
Worn out bearings on the turbocharger.
The torsion meter for the main propeller shaft is reading high. The torque is sensed using the angle of twist principle with two clamp rings attached to the shaft at a fixed distance, with stationary proximity switches for measuring the angle of twist and also shaft speed fixed to a rigid stool. What is the most likely cause of the high reading?
Circumferential slip of the after clamp ring in the opposite direction to shaft rotation.
Axial slip of one of the clamp rings to bring them closer together.
Axial slip of one of the clamp rings to move them further apart.
In which of the following automated control processes will the time constant be of minor importance?
Level control.
Flow control.
Temperature control.
Pressure control.
I don’t know.
What does ISM stand for?
The International Management Code for the Safe Operation of Ships and for Pollution Prevention.
International Ship Measurement and Pollution Control.
International Safe Manning Certification.
Internal Ship Safety Management.
The temperature control for a hot water system is very erratic with the temperature gradually rising and then suddenly falling and vice versa even though system demand is fairly constant. Which of the options given is the most likely cause of this problem?
Control valve gland is over tightened.
Controller integral action reset time is too fast.
Control valve actuator diaphragm is ruptured.
Control air pressure supply is too low.
A transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect frequency.
Incorrect current.
Incorrect voltage.
Incorrect earthing.
Why shall a duly qualified officer supervise any potential polluting operation?
To restrict pollution.
To relieve the master.
To avoid pollution.
To inform the authorities.
What is the purpose of the relief valves fitted to the doors and casing of 2-stroke diesel engine crankcases?
To relieve excess pressure in the crankcase resulting from a crankcase explosion.
To relieve excess pressure in the crankcase resulting from piston rod gland leakage.
To maintain a constant pressure in the crankcase.
What should be the healthy continuity resistance of a 220V, 2,2kW, 10A heating element, when checked near to it’s rated operating temperature?
22 Ohms.
220 Ohms.
10 Ohms.
0,1 Ohms.
A motor nameplate reads 75 hp. What is the reading in kW?
56 kW.
75 kW.
37,5 kW.
128 kW.
A transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect voltage.
Incorrect frequency.
Incorrect earthing.
Incorrect current.
I don’t know.
In the context of an automated process control system, what is understood by the expression Master Controller?
The primary controller in a cascade control system.
The captain’s controller.
State of the art controller.
The best possible control system.
I don’t know.
What type of dynamic forces may cause indent in plating on forecastle deck and main deck in way of pillars inside forecastle?
Impact pressure forces in way of abrupt or flared bow.
Forces created by waves on the forecastle.
Slamming in way of flat bottom forward of light draught.
Pressure forces caused by green water on deck.
A ship’s electrical system operates at 60 Hz, but when connected to shore supply it is supplied with 50 Hz. Which of the following would you expect?
Electric motors will run at reduced speed, and will tend to overheat.
Earth faults are more likely.
Electric motors will run at increased speed and will tend to overheat.
Generators are more sensitive to reverse power faults.
I don’t know.
The fuel tank contents gauges onboard a vessel are of the air bubble and bell type. The gauges are calibrated for a different fuel type to the actual fuel in the tanks. When correcting the actual contents of the tanks from the gauge readings which of the parameters given in the options is the most important?
Fuel viscosity.
Fuel density.
Fuel pour point.
Fuel temperature.
When should a crew member joining a ship for the first time be given some training and instructions in the use of the ship’s fire-fighting appliances?
As soon as possible but not later than 2 weeks after he joins the ship.
As soon as possible but not later than 2 days after he joins the ship.
As soon as possible but not later than 24 hours after he joins the ship.
As soon as possible.
The fuel consumption for the main diesel engine has gradually increased over a period of a few months. All system pressures and temperatures appear normal. From the options given, choose the one which is the most likely cause of this:
Fouling of the hull.
Water in the hull.
Sea water temperature changing.
Damaged propeller blade.
Worn piston rings are allowing a small amount of piston blow-by on a 2-stroke main diesel engine cylinder, but due to the circumstances, it is not possible to stop and do a piston overhaul. What is the correct, temporary action to take?
Increase cylinder oil feed rate slightly and monitor the scavenge space drains.
Reduce speed.
Continue to operate the engine as normal.
Increase cylinder oil feed rate to the maximum.
In case of pollution in US waters, do you always have to notify the National Response Center (OPA-90)?
Yes, within thirty (30) minutes.
Yes, within three (3) days.
No, not if the local US State Authority is correctly notified.
No, only the shipowner can notify NRC.
In tanker operations, there will be some areas and zones where flammable or explosive vapour, gas, or dust may be expected. Such areas are classified as hazardous. What is meant by hazardous area Zone 1?
Flammable mixture is continuously present or present for long periods.
Flammable mixture is not continuously present, but will be present during normal operations.
Flammable mixture is not present at all times.
Flammable mixture would not normally be present or it would be present for a short period only.
A transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect frequency.
Incorrect voltage.
Incorrect earthing.
Incorrect current.
An indicator card from a cylinder of a slow speed diesel engine shows a high maximum pressure occurring earlier in the cycle than normal with a normal compression pressure. From the options given, which action is most likely to identify the cause of the problem?
Check if the fuel injection pump timing is correct.
Check if the fuel filters are blocked.
Check if the fuel viscosity and temperature are correct.
Check if the fuel injection valve is partly blocked.
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 avoid the introduction of non-indigenous species of marine life from one area to another.
To keep the ballast water fresh in the ballast tanks during long voyages.
To allow ballast tank inspections to be carried out during ballast passage.
To ensure that ballast tanks are always pressed up during a ballast voyage to avoid free surface effects.
Low voltage ships tend to have insulated neutral systems. What is the reason for this?
In the event of an earth fault vital equipment will not trip.
It’s easier to detect faults.
If the neutral is not insulated, then it may short to other conductors.
It’s more effective than insulating the live conductor.
I don’t know.
A cable has a resistance of 100 milli-ohms. It supplies a 300 A load over a distance of 100 meters. What is the voltage drop along it’s length?
3,0 volts.
300 volts.
30 volts.
300 millivolts.
I don’t know.
Who is responsible for ensuring that your ship’s security plan meets the requirements of the ISPS Code?
Recognized Security Organization.
Flag State Administration.
Company Security Officer.
Ship Security Officer.
Continuity testing of a delta connected three phase induction motor yields the following results; U-V = 3 ohms, V-W = 3 ohms, W-U = 6 ohms. Which of the following is the likely condition?
Open circuit winding between W and U.
Partial fault between W and U.
Short circuit between V and Earth.
Short circuit between W and U.
The coil of a 12 V, 120 mA DC relay must be connected across a 24 V supply. What action should be taken?
Install a 100 Ohm resistor in parallel with the coil.
Install a 100 k Ohm resistor in parallel with the coil.
Install a 100 k Ohm resistor in series with the coil.
Install a 100 Ohm resistor in series with the coil.
I don’t know.
Sometimes an early warning of failure in High Voltage switchboards may be an unpleasant smell. If the switchboard uses gas circuit breakers, which of the following may indicate a potential problem?
Rotten eggs.
Rotten fish.
Chlorine.
Gas oil.
I don’t know.
Which of the following is typical for a feed-forward control system?
Mathematical calculation of the system response.
Easy to obtain a perfect control.
Control of the process inlet side.
The process continually oscillates.
I don’t know.
Which of the options given is likely to be the reason for a drop in the charge air manifold pressure of a diesel engine operating with an exhaust gas turbocharger?
Scavenge ports dirty.
Insufficient cooling of the charge air.
Engine room exhaust fans stopped.
Exhaust gas boiler fouled.
Why is it important that the correct tension is maintained in a diesel engine timing chain?
Correct tension ensures that the chain and associated equipment is within normal loading limits.
Correct tension ensures that there is absolutely no vibration in the chain.
Correct tension ensures that the fuel and valve timing are correct.
Correct tension ensures that the chain is correctly lubricated.
Continuity testing of a delta connected three phase induction motor yields the following results; U1-V1 = 4 Ohms, V1-W1 = 4 Ohms, W1-U1 = 4 Ohms. What is the value of continuity resistance for each winding i. e. U1-U2?
12 Ohms.
6 Ohms.
2 Ohms.
4 Ohms.
I don’t know.
A galley hot plate uses a Nichrome/Magnesium Oxide heating element and is to be tested before being put into service for the first time. An insulation resistance test yields a reading of 0,3 M Ohm. Which action should be taken?
Apply reduced voltage to the element for a few minutes. Then retest and if ok put into service.
Put the element into service.
Wash the element in a degreasing agent. Then retest and if ok put in into service.
Discard the element.
In the context of an automated control system, which controller must be tuned first in a cascade control system?
Any one of them.
Both at the same time.
The secondary controller.
The primary controller.
I don’t know.
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?
0,2 to 0,5 bar.
5 bar.
1 to 2 bar.
10 bar.
The majority of conventions adopted under the auspices of IMO fall into which of the three main categories?
Maritime Safety, Prevention of Marine pollution, Liability and compensation.
Maritime Safety, STCW, Maritime Security.
Safety, Terrorism, ILO.
There are no conventions that fall under IMO.
A thermistor, which provides feedback for a thermal control system, is suspected to have failed. Assuming there is no available replacement, which of the following methods may be used to prove it has failed?
Disconnect the thermocouple lead from the controller, and replace it with a mA source.
Connect a mA source in parallel with the thermocouple connections.
Connect a mV source in parallel with the thermocouple connections.
Disconnect the thermocouple lead from the controller, and replace it with a mV source.
I don’t know.
Which is the preferred method for starting an air conditioning refrigeration compressor which has been shut down for a period of time?
Start with suction valve throttled in to minimise risk of drawing liquid refrigerant into the compressor.
Start with all system valves fully opened.
Start and stop repeatedly until suction pressure and oil pressure are normal.
Start with the discharge valve throttled in to prevent excess condenser pressure.
The circuit diagrams illustrate four different methods of wiring between a Pt 100 temperature sensor and its signal processing electronics. Which of the wiring methods gives the best measuring accuracy?
Figure 2.
Figure 4.
Figure 1.
Figure 3.
I don’t know.
Which personnel must undergo familiarization training on board?
Everyone.
Only the ratings.
Only the deck officers.
Only catering staff.
The current test includes Seagull CES questions on the topic of «Engine». These questions are designed to assess the competence of specialists in preventing accidents related to transport safety and can also be used for self-assessment.
The «Engine – Management Level» subject covers both theoretical and practical knowledge essential for advanced training on any type of vessel. Sailors at the management level in the engine department, such as the Chief Engineer and Second Engineer, are responsible for overseeing the operation, maintenance, and repair of the ship’s machinery and engineering systems. They ensure that all equipment operates efficiently and safely, manage the engine room personnel, and ensure strict compliance with safety and environmental regulations.
- Version: 6.0.
- Test type: STCW.
- Department: Engline.
- Level: Management.
- Vessel type: any.
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