SETS 6000 EM10: Diagnose and Correct Equipment Malfunctions Answers (Engine, Operational)

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Amount of questions: 19.

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What is the function of item "PC"?

Pressure Controller activating 3-way valve solenoid.

Pressure Container admitting air to air bottle.

Pressure Container activating automatic pressure release valve.

Piston Controller activating compressor piston movement.

What is item "U" and how does it act on item "S"?

Item "U" is the uplifter of the air bottle's safety valve.

Item "U" is the upper pressure limit valve activating the solenoid.

Item "U" is the unloader lifting the compressor suction valve.

Item "U" is the activator for the safety release valve.

You will notice in this drawing that steam traps are fitted so only condensate can return. Then why is there an atmospheric condenser fitted?

Because the water is condensed under pressure and will re-evaporate.

To allow the vapour and water to be cooled under vacuum.

To de-airate the water under vacuum.

To avoid steaming up if steam traps are frequently stuck or defective.

What will happen if the seat plate 5 is ground too much allowing valve disc 4 to open an increased amount?

The thermodynamic efficiency decreases.

The compression ratio decreases.

The maximum output pressure decreases.

All of these.

What are the steps to be taken, in what order, to stabilise the governor of a diesel engine after overhaul?

Adjust speed P, then integrate, next differentiating, from 0.

Set integrating to MAX, than adjust speed P and differential D.

Set integrating to MAX, differentiating to MIN, adjust speed upward.

Integrating and differentiating MAX, set speed from 0 upwards.

All engine crankcase explosion investigations have show only one thing in common; this is:

The build up of oil vapour.

Excessively high lubricating oil temperature.

Evidence of a hot spot.

A wiped crankshaft bearing.

What is the primary cause of scavenge air space fires?

Blow-by due to broken piston rings.

Insufficient cylinder lubrication.

Faulty injectors.

Excessive cylinder lubrication.

If the performance of a centrifugal pump deteriorates over time (tons/hour x height in metres) it is usually due to:

Cavitation of the impeller.

Excessive wear between impeller and wear ring.

Condition of the ball bearing.

Condition of the pump housing.

The amount, condition and appearance of liquid collecting in bilges over time is a sign of:

Sloppy engine room management.

Flooding taking place.

Specific system losses.

Leakage or overflow.

Which are the parameters that steer the automatic level control system of the boiler shown here?

Water level and steam consumption.

Feedvalve and feed by-pass valve.

The level controller.

The level transmitter.

Which of the significant combustible elements of fuel oil are a major source of air pollution?

Sulphur, carbon.

Nitrogen, oxygen.

Carbon, oxygen.

Hydrogen, nitrogen.

Too high alkalinity of boiler water may cause:

Scale.

Corrosion.

Caustic embrittlement.

Alkoid precipitation.

The weakening of boiler steel as the result of inner crystalline cracking is known as:

Exposure stress.

Caustic embrittlement.

Alkaline stress.

Corrosion.

Uneven flame distribution during combustion in the boiler furnace is known as:

Flame impingement.

Furnace overload.

Burner flame failure.

Unequal firing.

The best way to ensure engine speed governor stability is to allow a given ratio of:

Stability.

Sensitivity.

Speed droop.

Compensation.

When a new cylinder liner is fitted to a 2-stroke engine, which of the following steps should be taken ? I. Increase the cylinder oil flow. II. Reduce the cylinder load. III. Reduce the oil flow.

I and II.

I, II and III.

II and III.

I and III.

If you get a heavy scavenging air fire, which of these parts is likely to suffer the most serious damage?

The crosshead bearing.

The piston.

The exhaust valve.

The stuffing box.

When taking a set of crankshaft deflections the + sign is indicated, example +4. This means that:

The crankpin location is 4/100 mm out of centre.

The crankwebs have opened up by 4/100 mm.

The crankwebs have closed in by 4/100 mm.

One main bearing on one side is 4/100 mm bigger than the other.

In the operation shown what is being checked?

Axial position of the compressor impeller.

Turbine wheel/nozzle clearance.

Axial location of the labrynth gland.

Axial movement in the thrust bearings.

Welcome to the website where you can pass online the Seafarer Evaluation Training System (SETS) test on «EM10: Diagnose and Correct Equipment Malfunctions». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. SETS based on practical information and marine specialists experience.

SETS tests developed for evaluating seaman basic knowledge by company “Naval Education Services” is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW Section A-V/1-2.

SETS 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.

Current test contains SETS questions in area «EM10: Diagnose and Correct Equipment Malfunctions». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«EM10: Diagnose and Correct Equipment Malfunctions» subject includes theoretical and practical information about advanced training for work on any type of vessel. This test evaluates a candidate’s knowledge and ability to diagnose and correct malfunctions in critical vessel systems. It assesses the understanding of systematic troubleshooting methodologies applicable to various equipment, from main propulsion engines to auxiliary systems. A significant portion of the test is dedicated to interpreting technical diagrams, such as hydraulic schematics and electrical circuit drawings, to identify fault points. Candidates must demonstrate proficiency in using diagnostic tools and interpreting their readings to accurately pinpoint the root cause of a failure. Practical scenarios will require the test-taker to outline a logical sequence of corrective actions, ensuring compliance with safety and environmental protection standards. The examination includes questions on the operational principles of key machinery, as a deep technical understanding is essential for effective troubleshooting. Successfully passing this test confirms the advanced competencies needed to maintain operational safety and efficiency on any type of vessel. The final section challenges the candidate to propose solutions for complex, multi-system failures, simulating the high-pressure situations encountered at sea.

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September, 26, 2025 1344 1

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