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Главная Онлайн-тесты CES Все типы судов Ch-Eng / 2nd-Eng Test Online for Seamans about Engine, Management Level (CES v6.0)
Онлайн-тестирование: Test Online for Seamans about Engine, Management Level (CES v6.0)
Онлайн-тест
Описание
Отзывы
Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 118
Всего вопросов по данной теме: 118
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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.
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.
What is the maximum current that a 15 Volt, 3 Watt Zenerdiode can handle without damage?
0,2 A.
20 A.
0,45 A.
0,5 A.
The continuity resistance of a 100 m long × 25 sq. mm cable (rated at 100 A) is to be checked. Which of the following results would you anticipate?
Between 0,1 and 1,0 Ohm.
Between 0,1 and 1,0 M Ohm.
Greater than 1 M Ohm.
Between 0,1 micro Ohm and 1,0 micro Ohm.
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.
When selecting switchgear to work with High Voltage it is important to use an appropriate arcing medium. What is meant by arcing medium?
The gas, liquid or vapor, which will minimize creation of an electric arc as contacts open.
Equipment, which communicates information about the arcing.
A material, which assists a welding process.
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.
A medium speed diesel engine which is supported on a steel chocking system has had repeated problems with two of the chocks at the end of the engine on the port side becoming slack. This has led to some fretting damage to the bedplate and tank top in that area. What action should be taken to affect a cost effective permanent repair?
Tighten the holding down bolts in that area to 150 % recommended load to prevent further slackening and fretting.
Replace the complete steel chocking system with one using resilient mounts to accommodate movement and avoid further incidents of fretting.
Replace the damaged chocks with resin based chocks of an appropriate size.
Replace the complete steel chocking system with a resin based system.
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.
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.
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.
During maintenance work on the main engine a problem arises regarding the lifting of a main component in that the manufacturer’s instructions ado not apply to the engine as fitted and present a hazard. In which of the information/record sources given in the options, is it most important to record the information relating to this anomaly?
ISM procedures in the ship’s safety manual.
Safety officers report.
Engine room planned maintenance schedule.
Engine room log book.
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 carrying out repair or maintenance tasks involving hot work a hot work permit must be issued. Select the correct option from those given which completes the following statement. The permit for hot work:
Should only cover specific hot work tasks, be valid for a specified time period and be issued by the person carrying out the work.
Should only cover specific hot work tasks and be valid for a specified time period.
Is valid for completion of the specific hot work tasks irrespective of the time taken.
A 6-Volt DC relay is to be used with a 12-Volt power supply. The relay requires a current of 0,1 Amp. What is the series resistance required?
60 Ohm.
80 Ohm.
480 Ohm.
120 Ohm.
I don’t know.
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 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.
After a couple of hours of operation the failure alarm sounds for a heavier fuel oil purifier which is operating on a timed automatic sludge cycle. Upon investigation the purifier is found to be running slowly and when opened up the casing and sludge outlet is heavily fouled with sludge in contact with the bowl. From the options given what is the most likely cause of this problem?
The heavy fuel is unstable leading to excessive high viscosity sludge formation.
The dirty oil throughput is excessive.
The clutch for the drive shaft is worn and slipping.
The purifier bowl has not closed properly.
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.
What kind of electrolyte is used for Nickel-iron batteries?
Solution of sodium and water.
Solution of zinc-carbon and water.
Solution of sulphuric acid and water.
Solution of potassium hydroxide (KOH) and water.
I don’t know.
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.
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 lubricating oil temperature is low.
The turbocharger has not run up to normal full speed.
The turning gear interlock has operated.
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.
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.
A 6-Volt DC relay is to be used with a 12-Volt power supply. The relay requires a current of 0,1 Amp. What is the series resistance required?
60 ohm.
120 ohm.
480 ohm.
80 ohm.
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.
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.
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 considering instrumentation systems, what is a typical symptom of a fault with the span of an instrument?
100 % output is accurate, but Zero-point is wrong.
Zero-point and 100 % are correct, but not at mid-range.
Zero-point is accurate, but 100 % input is not giving 100 % output.
Linearity problems.
How can the pressure be regulated during start up of a positive displacement pump such as a gear pump?
Adjustment of the pressure relief valve to recirculate part of the flow.
Positive displacement pumps operate at constant pressure and cannot be regulated.
By throttling the discharge valve.
By throttling the suction valve.
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 terms of automated control systems, what is typical for a continuous control system?
It is possible to predict the control mathematically.
The control valve will always be changing position.
It is not possible to have a stable process.
The output signal is equal to the input signal.
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.
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.
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 principle of measurement are viscosity controllers usually based on?
Measurement of differential pressure.
Measurement of two different temperatures.
Measurement of flow.
Measurement of temperature.
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 increasing fouling.
No influence at all.
Increase the time between overhauls since the engine is not working as hard.
Increase the time between overhauls since fuel injectors work better at low load so combustion will be improved and the maintenance will be reduced.
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.
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.
Some diesel engines have alarm and slow down protection in the event of a fire in the scavenge boxes. Choose the option which would be a typical set point for giving a slow down of the engine in the event of a scavenge box fire?
120 °C.
40 °C.
150 °C.
50 °C.
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.
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.
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).
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.
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.
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 type of dynamic forces may cause indent in plating on forecastle deck and main deck in way of pillars inside forecastle?
Pressure forces caused by green water on deck.
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.
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.
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.
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.
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.
Two reference points for pressure exist, absolute zero and atmospheric pressure. What are pressures measured relative to absolute zero called:
Pressure drop.
Gauge pressure.
Vacuum pressure.
Absolute pressure.
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.
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.
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?
Wet vapour at high pressure.
Cold liquid at high pressure.
Sub-cooled liquid at low pressure.
Slightly superheated low pressure gas.
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.
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.
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.
How is a Safety Management Certificate obtained?
Ship owner has Document of Compliance issued, and vessel is assessed and holds all statutory certificates.
RSS issue SMC with Register.
Vessel is surveyed by MCA and certificate issued.
Ship owner is authorised to carry out internal audits and issue SMC.
A transformer rated at 22 kVA, 440/220 Volts, 60 Hz, is used to step down the voltage to a lighting system. The low tension voltage is to be kept constant at 220 Volts. What load impedance connected to the low-tension side will cause the transformer to be fully loaded?
220 Ohms.
0,22 Ohms.
22 Ohms.
2,2 Ohms.
I don’t know.
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.
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.
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.
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.
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 motor nameplate reads 75 hp. What is the reading in kW?
56 kW.
75 kW.
37,5 kW.
128 kW.
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.
It is the Master’s responsibility to ensure that:
Concerned personnel carry out the on-board training programme effectively.
All information regarding the onboard training is given to the ship manager.
Safety equipment is not used during the training.
Life jackets are worn during every training.
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.
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.
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.
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.
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.
A transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect frequency.
Incorrect current.
Incorrect voltage.
Incorrect earthing.
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.
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.
When considering instrumentation systems, what is a typical symptom of a fault with the span of an instrument?
100 % output is accurate, but Zero-point is wrong.
Linearity problems.
Zero-point and 100 % are correct, but not at mid-range.
Zero-point is accurate, but 100 % input is not giving 100 % output.
I don’t know.
A draw card obtained from a cylinder of a large 2 stroke diesel engine shows that both cylinder compression and maximum pressures are low. Cards from other cylinders indicate normal operation. What is the likely cause of this problem?
Faulty cylinder component (piston rings, liner, etc.).
Excessive cooling of the charge air.
Faulty high pressure fuel pump.
Faulty turbocharger.
What is the advantage of a transmitter with a narrow measurement range?
Do not need any calibration.
Easy installation.
Better linearity and increased accuracy.
Lower purchase cost.
I don’t know.
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.
0,1 Ohms.
220 Ohms.
10 Ohms.
I don’t know.
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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