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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)
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Тест состоит из 80 случайных вопросов.
Всего вопросов по данной теме: 118
Всего вопросов по данной теме: 118
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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.
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.
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.
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.
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.
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 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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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 measuring level of liquids with a conductivity level indicator, measurement is performed by:
Capacitance probe.
Electrodes.
Ionization chamber.
Displacement probe.
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 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.
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).
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
The muster list shall show the duties assigned to the different members of the crew. Which of the given duties necessarily have to be included in the muster list?
Clearing escape routes.
Preparation and launching of survival crafts.
Type of fires that can be encountered on board.
Preparation and starting of emergency generator.
What principle of measurement are viscosity controllers usually based on?
Measurement of differential pressure.
Measurement of two different temperatures.
Measurement of flow.
Measurement of temperature.
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.
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.
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.
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.
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.
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 one of the listed requirements regarding abandon ship drills corresponds to present SOLAS regulation?
Each lifeboat shall be launched, and maneuvered in the water with its assigned crew at least once every three months during an abandon ship drill.
Drills shall be conducted when the ship is in a harbour.
All lifeboats shall be lowered during drills.
In 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
In tanker operations, there will be some areas and zones where flammable or explosive vapour, gas, or dust may be expected. Such areas are classified as hazardous. What is meant by hazardous area Zone 1?
Flammable mixture is continuously present or present for long periods.
Flammable mixture is not continuously present, but will be present during normal operations.
Flammable mixture is not present at all times.
Flammable mixture would not normally be present or it would be present for a short period only.
A 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.
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.
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 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.
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.
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.
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.
When performing electrical testing of a three phase motor, insulation resistance measurements may be influenced by which of the following?
Temperature, humidity and surface contamination.
Humidity, frequency and dampness.
Humidity, pressure and surface contamination.
Between 0,1 micro Ohm and 1,0 micro Ohm.
I don’t know.
The 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 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 transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect frequency.
Incorrect voltage.
Incorrect earthing.
Incorrect current.
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.
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.
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.
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.
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.
What does ISM stand for?
The International Management Code for the Safe Operation of Ships and for Pollution Prevention.
International Ship Measurement and Pollution Control.
International Safe Manning Certification.
Internal Ship Safety Management.
The 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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