Online CES test for seafarers about Engine Management

Welcome to the website where you can pass online the CES test version 6.0 on the subject «Engine Management». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES based on practical information and marine specialists experience.

CES tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.

Version: 6.0.
Test type: STCW.
Department: Engline.
Level: Management.
Vessel type: any.

CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:

Crowd and Crisis Management;
Integrated Navigation System (INS);
Ballast water management;
Handling and Stowage;
Vessel operation management and safety;
Marine engineering;
Maintenance and repair, etc.

Current test contains Seagull CES questions on the subject «Engine». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Engine – Management level» subject includes theoretical and practical information about advanced training for work on any type of vessel. Sailors at the management level in the engine department, such as the Chief Engineer and Second Engineer, oversee the operation, maintenance, and repair of the ship’s machinery and engineering systems. They ensure that all equipment is functioning efficiently and safely, manage the engine room staff, and ensure compliance with safety and environmental regulations.

On this site Crew Evaluation System Test on the subject «Engine» contains 77 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.

The test includes three modes. In the Training mode, you go through 60 questions with the option to take a hint, while in the Exam mode, this option is not available. We have also developed another mode – Wild, where you can answer all the questions available in the test at once. Enjoy!

Choose the regime, in which you want to pass CES test:

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Use the search below to find question.

Amount of questions: 77.

Right answers marked with this sign .

Code: bblxrARS 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.

Code: E4dSFYq3 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.

Code: ??? 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.

Code: K$4AzW#H 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.

Code: GUnTYJB3 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.

Code: Qlzr486v 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.

Code: 23iOimwV 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.

Code: Ao3F8DoS 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).

Code: ??? 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.

Code: ipAgHSo0 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.

Code: waqV8rbz 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.

Code: CnewH5Yj 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.

Code: uq6JyAO0 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.

Code: Tt167MN9 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.

Code: ??? 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.

Code: ??? 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.

Code: y71OKSiS 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.

Code: m8TJHov 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.

Code: 95v48Ath 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.

Code: 1GW2lQPN 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.

+/- 80 °C.

+/- 30 °C.

Code: S9MVz1#T 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.

Code: foF5SLXG 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.

Code: FbpB8qg7 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.

Code: tqwB3VGL 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.

Code: adK6CWD6 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.

Code: ISnud719 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.

Code: O5XmNcFW 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.

Code: ??? 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.

Code: ??? 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.

Code: PwrHplEv 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.

Code: 9NgWQBvz 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.

Code: v2An9SO1 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.

Code: US25bwnC A transformer overheats while taking a shore supply. Which is the likely cause?

Incorrect frequency.

Incorrect voltage.

Incorrect earthing.

Incorrect current.

Code: ??? 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.

Code: ??? 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.

Code: KDsokZSR 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.

Code: VXwHhyWo 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.

Code: nP2ySeRM 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.

Code: Qk0JROWO 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.

Code: UG9UOfHq 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.

Code: ??? 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.

Code: ??? 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.

Code: S74huY$P How often should the lifeboat wire falls be turned and renewed?

Turned at intervals of not more than 30 months and renewed every 5 years.

Renewed every three years.

Turned every 30 months and needs only to be renewed if the wire is in poor condition.

Turned every 2 years and renewed every 4 years.

Code: ??? A motor nameplate reads 75 hp. What is the reading in kW?

56 kW.

75 kW.

37,5 kW.

128 kW.

Code: FM6BNOMk 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.

Code: JTHRg8u9 This figure shows a transformer, with two windings, N(1) = 2 000 and N(2) = 1 000 turns, on a common magnetic circuit. Assume that there is no energy loss in the transformer itself. Calculate the current I(2) when the current I(1) = 2 A.

I(2) = 4 A.

I(2) = 2 A.

I(2) = 8 A.

I(2) = 1 A.

Code: ??? 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.

Code: ??? Which personnel must undergo familiarization training on board?

Everyone.

Only the ratings.

Only the deck officers.

Only catering staff.

Code: TbCUaobP 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.

Code: ??? 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.

Code: ??? 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.

Code: CAy#NCQs 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.

Code: HtBOZkP7 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.

Code: OMj#3ERx 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.

Code: y1yzN1Pe 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.

Code: MtSjhqFI 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.

Code: aLantBoK 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.

Code: 7i3ruVsE 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.

Code: fdL2yBMu 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.

Code: op7sFdlv 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.

Code: Z6gJnPCQ 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.

Code: 32NTvj0X 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.

Code: sCLJHJbr 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 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 maximum width and the integral action to maximum (repeats per minute).

Code: sNNizt9t 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.

Code: adeCZsDs 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.

Code: k32bmRKf 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.

Code: aCilgZbx 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.

Code: #TTBaZCF 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.

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.

Some ships generate electrical power at 440 V, 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?

The overall ship’s electrical load does not justify a 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.

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 a High Voltage generating plant at the time of manufacture, so they used what was available at the time.

I don’t know.

When work must be done on High Voltage equipment, it is vital that the equipment is earthed (grounded) after isolation procedures have been carried out. Why is this?

To provide a reference point, and so ensure accuracy of any test results.

To ensure that it is dead, even if there was a flaw in the isolation procedure.

To ensure that no energy remains in the system, and that it cannot be recharged by external influences.

To ensure that the equipment does not overheat due to currents circulating through earth (ground).

I don’t know.

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.

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.

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.

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 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.

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.

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.

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 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.

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.

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.

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.

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.

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 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.

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.

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.

When considering instrumentation systems, what is the meaning of the expression “dead-band”?

The controller will not react to a process change in this range.

It will take some time before the controller will react to a change.

The controller will enter “sleep mode”.

The controller will not respond to adjustment of set-point.

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.

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.

A triac is used to provide temperature control of an oven. The galley complains that the oven only reaches approximately 50 % of demanded temperature. Which of the following is a likely cause?

The triac has completely failed.

The voltage supply to the oven controller is reduced by about 50 %.

Connection between the demand knob and the triac gate terminal has gone open circuit.

One of the main switching elements in the triac has failed.

I don’t know.

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.

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?

Discard the element.

Put the element into service.

Wash the element in a degreaser agent. Then retest, and if ok put it into service.

Apply reduced voltage to the element for a few minutes. Then retest, and if ok put into service.

I don’t know.

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.

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.

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.

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 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.

Some automated control systems use a master controller and a slave controller. What is the meaning of “remote mode” related to a slave controller?

The slave controller can be turned by a hand carried remote controller.

The slave controller can be in any mode of operation.

The slave controller receives the set-point from the output signal of the master controller.

The slave controller can be turned from the engine control room.

I don’t know.

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.

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.

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.

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.

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.

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.

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.

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.

Code: #HJ2AG$E 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.

Code: #1rKoZaR 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.

Code: el65izDX 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.

Code: 44K1H6U7 A transformer overheats while taking a shore supply. Which is the likely cause?

Incorrect frequency.

Incorrect current.

Incorrect voltage.

Incorrect earthing.

Code: Qd3cEesB 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.

Code: Zsq6eai0 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.

Code: woc1pFCR 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.

Code: yxDr40j2 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.

Code: LAd5ZZ1E The charge air pressure supplied to a diesel engine, which is normally 2,0 bar, is reduced to 1,5 bar. What will be the likely effect on the engine operation?

The performance of the engine will be reduced noticeably.

The performance of the engine will be similar to normal conditions.

The turbochargers cooling water flow will increase.

The cylinder cooling water flow will increase.