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Онлайн-тестирование: Test Online for Seamans about Engine, Management Level (CES v6.0)

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Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 118

Вопрос 1 из 80

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.

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 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.

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.

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.

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

56 kW.

75 kW.

37,5 kW.

128 kW.

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.

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.

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.

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.

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.

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.

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.

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 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.

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.

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 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.

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.

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.

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 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.

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.

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 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.

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.

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.

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.

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 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.

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.

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

Incorrect frequency.

Incorrect current.

Incorrect voltage.

Incorrect earthing.

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.

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.

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.

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 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.

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.

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.

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.

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.

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.

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.

+/- 50 °C.

+/- 10 °C.

+/- 30 °C.

+/- 80 °C.

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.

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.

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.

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.

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.

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.

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.

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 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.

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.

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.

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.

Which personnel must undergo familiarization training on board?

Everyone.

Only the ratings.

Only the deck officers.

Only catering staff.

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.

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.

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.

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.

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.

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.

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 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.

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 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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 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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