Fleet Electrical Safety Rules Test -electrical Operator

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  • 1/40 Questions

    The size of an electric shock current is related to the......

    • Applied voltage
    • Body resistance
    • Both applied voltage and body resistance
Please wait...
About This Quiz

When it comes to electricity if you are not careful, you stand a high chance of getting injured or injuring those around you. Over the past month, we have covered much about electrical safety rules. This competency assessment may be used to assess the competencies required by an electrical person. Take it up and see just how much you know See moreas an electrical operator.

Fleet Electrical Safety Rules Test -electrical Operator - Quiz

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  • 2. 

    The Insulation resistance value of a machine falls.....

    • At low temperature

    • At high temperature

    • At both low and high temperature both

    Correct Answer
    A. At high temperature
    Explanation
    Insulation resistance refers to the ability of the insulation material to resist the flow of current. At high temperatures, the insulation material tends to degrade and become less effective in preventing current leakage. This leads to a decrease in insulation resistance value. Therefore, the insulation resistance value of a machine falls at high temperatures.

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  • 3. 

    Insulation and vibration testing are part of .....

    • Break down maintenance

    • Condition monitoring

    • Planned maintenance

    Correct Answer
    A. Condition monitoring
    Explanation
    Insulation and vibration testing are part of condition monitoring. Condition monitoring involves regularly monitoring the condition of equipment, such as measuring insulation resistance and vibration levels, to identify any potential issues or faults. These tests help to ensure that the equipment is operating within acceptable parameters and can help to detect any early signs of deterioration or malfunction. By regularly monitoring the condition of equipment, maintenance can be scheduled proactively, minimizing the risk of unexpected breakdowns and reducing downtime.

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  • 4. 

    Infrared Thermography inspection (IRT) cannot help in detecting.....

    • High electrical resistance and high loading

    • Energised ground cables, open circuits and short circuits

    • Dynamic unbalance of a rotating machine

    Correct Answer
    A. Dynamic unbalance of a rotating machine
    Explanation
    Infrared Thermography inspection (IRT) is a technique used to detect variations in temperature. It works by measuring the infrared radiation emitted by an object or surface. However, dynamic unbalance of a rotating machine does not cause any significant temperature variations that can be detected by IRT. Dynamic unbalance refers to an uneven distribution of mass in a rotating object, which can cause vibrations but not necessarily temperature changes. Therefore, IRT is not effective in detecting dynamic unbalance of a rotating machine.

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  • 5. 

    Infrared Thermography  inspection (IRT) can be carried out by

    • Any electrical person provided he or she knows how to use IRT camera and asked to do so.

    • Any electrical person provided he or she knows to use IRT camera and wears proper PPE.

    • Only by approved contractors (i.e.Yellotec)

    Correct Answer
    A. Only by approved contractors (i.e.Yellotec)
    Explanation
    The correct answer is "Only by approved contractors (i.e. Yellotec)". This means that only contractors who have been approved by Yellotec are allowed to carry out infrared thermography inspections. This implies that there may be certain qualifications, training, or certifications required to perform this type of inspection accurately and safely.

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  • 6. 

    . Which statements are correct?

    • A risk assessment must be prepared before performing any electrical work

    • A risk assessment does not need to be documented for simple tasks such as changing a light fitting

    • Risk assessments are only necessary for live work

    Correct Answer
    A. A risk assessment does not need to be documented for simple tasks such as changing a light fitting
    Explanation
    A risk assessment is a process of identifying potential hazards and evaluating the associated risks before performing any task. While it is important to conduct a risk assessment before performing any electrical work, it does not always need to be documented for simple tasks like changing a light fitting. However, it is still necessary to assess the risks involved and take necessary precautions to ensure safety.

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  • 7. 

    . In which circumstances are contact with electricity most likely to be harmful.

    • Touching a 24 V dc battery terminal with hand.

    • Using a faulty 110V ac power tool in a damp environment

    • Using a faulty 240Vac power tool with RCD.

    Correct Answer
    A. Using a faulty 110V ac power tool in a damp environment
    Explanation
    Using a faulty 110V ac power tool in a damp environment can be most harmful when in contact with electricity. This is because the combination of a faulty tool and moisture increases the risk of electrical shock. Damp environments can conduct electricity more easily, making it easier for the electrical current to flow through the body, potentially causing serious injury or even death.

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  • 8. 

    Which statement is correct?

    • There is no directly defined boundary between a safe voltage and a dangerous voltage.

    • Voltage between 110V are considered safe

    • Voltages over 440V are especially dangerous.

    Correct Answer
    A. Voltages over 440V are especially dangerous.
    Explanation
    The correct answer is "Voltages over 440V are especially dangerous." This statement indicates that voltages exceeding 440V are particularly hazardous. It suggests that there is a threshold at which voltage becomes significantly more dangerous, emphasizing the importance of caution when dealing with high voltages.

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  • 9. 

    Who is allowed to open live electrical panels?

    • Any ship’s engineer.

    • A qualified electrical person.

    • A qualified electrical person wearing appropriate PPE.

    Correct Answer
    A. A qualified electrical person wearing appropriate PPE.
    Explanation
    Opening live electrical panels can be extremely dangerous and can result in electric shock or other serious injuries. Therefore, only individuals who are qualified and trained in electrical work should be allowed to open live electrical panels. Additionally, wearing appropriate personal protective equipment (PPE) is necessary to ensure the safety of the person performing the task.

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  • 10. 

    EPTW is not required for replacing lamps in luminaries installed in:

    • Pump room

    • Engine room and accommodation places.

    • Motor room

    Correct Answer
    A. Engine room and accommodation places.
    Explanation
    EPTW stands for Electrical Permit to Work, which is a safety procedure used to control electrical work in hazardous areas. The question states that EPTW is not required for replacing lamps in luminaries installed in engine room and accommodation places. This implies that replacing lamps in these areas does not pose a significant electrical hazard, and therefore, EPTW is not necessary.

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  • 11. 

    Isolation means:

    • Physical separation from all sources of supply.

    • Physical separation from all sources of supply and application of safety locks and caution notices to prevent electrical equipment being made live in error.

    • Disconnection from live conductors by an open isolator.

    Correct Answer
    A. Physical separation from all sources of supply and application of safety locks and caution notices to prevent electrical equipment being made live in error.
    Explanation
    Isolation refers to physically separating electrical equipment from all sources of supply and taking additional safety measures such as using safety locks and caution notices to prevent accidental activation of the equipment. This ensures that the equipment remains inactive and prevents any potential hazards or accidents.

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  • 12. 

    The smoke detector Ion Chambers should never be disposed of by crushing or burning (incinerating) because these contain:

    • Explosive material.

    • Radioactive material

    • Non-ionizing radiation source.

    Correct Answer
    A. Radioactive material
    Explanation
    The correct answer is radioactive material. Smoke detector ion chambers contain a small amount of a radioactive material called Americium-241. This material is used to ionize the air inside the detector, allowing it to detect smoke particles. Crushing or burning the detector can release this radioactive material into the environment, posing a potential health hazard. Therefore, it is important to handle and dispose of smoke detector ion chambers properly, following the guidelines provided by the manufacturer or local authorities.

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  • 13. 

    . A voltage not exceeding 1kVAC is

    • Medium Voltage (MV)

    • Low Voltage (LV)

    • High Voltage (HV)

    Correct Answer
    A. Medium Voltage (MV)
    Explanation
    A voltage not exceeding 1kVAC is considered medium voltage (MV). This is because medium voltage typically ranges from 1kV to 35kV. Voltages below 1kVAC are categorized as low voltage (LV), while voltages above 35kV are considered high voltage (HV). Therefore, the given voltage falls within the medium voltage range.

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  • 14. 

    What is meant by being intrinsically safe?

    • Electric wiring executed by approved manufacture?

    • Product having a special wiring system?

    • Cannot produce enough energy to ignite a gas (explode)?

    Correct Answer
    A. Cannot produce enough energy to ignite a gas (explode)?
    Explanation
    Being intrinsically safe means that a product or system is designed in a way that it cannot produce enough energy to ignite a gas and cause an explosion. This is achieved through various safety measures such as limiting electrical energy, using non-sparking materials, and implementing protective barriers. Intrinsically safe devices are commonly used in hazardous environments where the presence of flammable gases or vapors poses a risk. By ensuring that the device cannot cause an ignition, the risk of accidents and explosions is minimized, making it safe to use in such environments.

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  • 15. 

    Zone 0 is a Hazardous area:

    • An area in which an explosive gas/air mixture is likely to occur in normal operation.

    • In which an explosive gas/air mixture is continuously present, or present for long periods.

    • None of the above

    Correct Answer
    A. In which an explosive gas/air mixture is continuously present, or present for long periods.
    Explanation
    Zone 0 is considered a hazardous area because it is an area where an explosive gas/air mixture is continuously present, or present for long periods. This means that there is a high risk of explosion or fire in this zone, making it dangerous for individuals and equipment. It is important to take proper safety precautions and use appropriate equipment in Zone 0 to minimize the risk of accidents and ensure the safety of personnel.

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  • 16. 

    Arching faults are most likely to occur:

    • During circuit breaker insertion

    • During circuit breaker removal

    • During circuit breaker removal or insertion and during switching operations.

    Correct Answer
    A. During circuit breaker removal or insertion and during switching operations.
    Explanation
    Arching faults are most likely to occur during circuit breaker removal or insertion and during switching operations because these actions involve the interruption of electrical current flow. When a circuit breaker is removed or inserted, or when switching operations are performed, there is a possibility of creating a high voltage arc due to the sudden interruption or restoration of the electrical circuit. This can lead to arcing faults, which can cause damage to the electrical equipment and pose a safety hazard.

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  • 17. 

    Arc Flash energy is generally much higher:

    • Away from the source of power generation.

    • Equal at all panels.

    • Close to the source of power generation.

    Correct Answer
    A. Close to the source of power generation.
    Explanation
    Arc Flash energy is generally much higher close to the source of power generation. This is because the energy levels decrease as the distance from the source increases. As the electrical current travels through the system, it encounters resistance and losses occur, resulting in a decrease in energy. Therefore, the arc flash energy is highest near the source of power generation and decreases as it moves further away.

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  • 18. 

    Portable electrical equipment is:

    • Battery powered devices carried on the person for own use

    • Equipment connected by a cable through a plug and receptacle to the ships electrical power system.

    • Any appliance that is hand held or can be moved whilst connected to an electricity supply via a lead and plug is classed as portable.

    Correct Answer
    A. Any appliance that is hand held or can be moved whilst connected to an electricity supply via a lead and plug is classed as portable.
    Explanation
    Portable electrical equipment refers to any appliance that can be hand-held or moved while connected to an electricity supply through a lead and plug. This definition includes devices that are not battery-powered and are connected to the power system through a cable and plug.

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  • 19. 

    Start or stop an electric generator set from a remote control station can be performed by:

    • Electrical Person

    • Electrical Operator

    • Both of them may perform this routine.

    Correct Answer
    A. Both of them may perform this routine.
    Explanation
    Both an Electrical Person and an Electrical Operator may perform the task of starting or stopping an electric generator set from a remote control station. This implies that both individuals have the necessary knowledge and skills to operate the generator set remotely. There may be specific circumstances or protocols in place that dictate who is authorized to perform this routine, but ultimately, either an Electrical Person or an Electrical Operator can carry out this task.

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  • 20. 

    Work on electrical equipment operating on a nominal 24 V installed in non hazardous area can be performed by:

    • Electrical Operator

    • Electrical Person LV and electrical person MV

    • A & B

    Correct Answer
    A. A & B
    Explanation
    The correct answer is A & B. This means that work on electrical equipment operating on a nominal 24 V installed in a non-hazardous area can be performed by both an Electrical Operator and an Electrical Person LV and MV. This implies that both individuals have the necessary knowledge, skills, and qualifications to safely work on such equipment.

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  • 21. 

    What will you do if you are told to operate unknown mechanical equipment?

    • Do not operate the machine, but read the manual before reporting to the head of your department

    • Seek advice from your superior before attempting to operate it.

    • As time is money, the trial and error method shall be used.

    Correct Answer
    A. Seek advice from your superior before attempting to operate it.
    Explanation
    The correct answer is to seek advice from your superior before attempting to operate the unknown mechanical equipment. This is the best course of action because your superior will have more knowledge and experience with the equipment and can provide guidance on how to operate it safely and effectively. It is important to prioritize safety and avoid potential risks or accidents by seeking guidance from someone who is more knowledgeable in handling the equipment.

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  • 22. 

    Portable electrical tools are not suitable for use in:

    • Accommodation areas.

    • All non-accommodation areas.

    • In hazardous areas.

    Correct Answer
    A. In hazardous areas.
    Explanation
    Portable electrical tools are not suitable for use in hazardous areas because these areas may contain flammable or explosive substances, which can pose a risk of fire or explosion if sparks or heat generated by the tools come into contact with them. Therefore, it is important to use specialized tools that are specifically designed for use in hazardous areas to ensure safety.

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  • 23. 

    Electrical test Equipments for use on STASCO managed vessels:

    • Can be from any Maker supplied through RS Components.

    • Should be selected from the list approved by the managing office (OTS/332).

    • Should be from quality manufacturer and expensive.

    Correct Answer
    A. Should be selected from the list approved by the managing office (OTS/332).
    Explanation
    The correct answer is "Should be selected from the list approved by the managing office (OTS/332)." This answer is supported by the statement that the electrical test equipment for use on STASCO managed vessels should be selected from the list approved by the managing office. This indicates that there is a specific list of approved equipment that should be used, and any equipment not on this list may not be suitable or allowed for use on the vessels.

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  • 24. 

    Live working on medium voltage systems is:

    • Permitted under special circumstances provided suitable PPE is worn.

    • Permitted only if the work is carried out by Electrical Person (MV).

    • Strictly forbidden in all circumstances.

    Correct Answer
    A. Strictly forbidden in all circumstances.
    Explanation
    Working on medium voltage systems is strictly forbidden in all circumstances. This is because medium voltage systems carry a higher risk of electrical shock and other hazards compared to low voltage systems. Therefore, it is important to follow safety protocols and regulations to ensure the safety of workers.

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  • 25. 

    Risk assessments are carried out in order to:

    • Meet a legal requirement under the Health and Safety Regulations.

    • To identify the extent of hazards in the work place and to put control measures to reduce or eliminate the hazard.

    • A & B

    Correct Answer
    A. A & B
    Explanation
    Risk assessments are carried out in order to meet a legal requirement under the Health and Safety Regulations and to identify the extent of hazards in the workplace. By conducting risk assessments, organizations can evaluate the potential risks and hazards present in their work environment and implement control measures to reduce or eliminate these risks. This helps ensure the safety and well-being of employees and helps organizations comply with legal obligations related to health and safety regulations.

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  • 26. 

    Two pole voltage Detectors are better than Digital Multimeters because:

    • These are cheap and easy to find.

    • Comparatively Safe, no connection errors and no danger of arching due their two-handed operation.

    • They are easy to use.

    Correct Answer
    A. Comparatively Safe, no connection errors and no danger of arching due their two-handed operation.
    Explanation
    Two pole voltage detectors are better than digital multimeters because they are comparatively safe, have no connection errors, and there is no danger of arching due to their two-handed operation. This means that users can safely and accurately detect voltage without the risk of electrical accidents or damage. Additionally, two pole voltage detectors are easy to use, making them a convenient and reliable tool for voltage detection.

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  • 27. 

    When using test equipment in hazardous area.

    • Always carry spare batteries.

    • Open equipment and check the condition of the fuse and batteries before each use.

    • Use Type approved fuses and batteries and never carriy spare batteries and open the equipment at work place

    Correct Answer
    A. Use Type approved fuses and batteries and never carriy spare batteries and open the equipment at work place
    Explanation
    It is important to use type approved fuses and batteries when using test equipment in a hazardous area to ensure safety and prevent any potential hazards. Carrying spare batteries and opening the equipment at the workplace can increase the risk of accidents and should be avoided.

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  • 28. 

    For testing and any “Live” work on low voltage electrical equipment

    • Any type and size of non-conducting mats can to be used.

    • Type approved matting provided by STASCO as part of the electrical safety kit on each ship is to be used.

    • Non-conducting mats are not necessary for “Live” work

    Correct Answer
    A. Type approved matting provided by STASCO as part of the electrical safety kit on each ship is to be used.
    Explanation
    The correct answer states that the type approved matting provided by STASCO as part of the electrical safety kit on each ship should be used for testing and any "Live" work on low voltage electrical equipment. This implies that using any type and size of non-conducting mats is not necessary and may not be as safe or effective as the approved matting provided by STASCO. Therefore, the recommended option is to use the type approved matting provided by STASCO.

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  • 29. 

    Fast and accurate assessment of Life &Rescue Boat battery condition can be done:

    • By regular testing battery voltage using digital multimeter.

    • By carrying out2/3engine start each week.

    • With the help of STASCO approved Battery tester 12V

    Correct Answer
    A. With the help of STASCO approved Battery tester 12V
    Explanation
    Regular testing of battery voltage using a digital multimeter and carrying out 2/3 engine starts each week are methods that can be used to assess the condition of Life & Rescue Boat batteries. However, the most effective and reliable method is to use a STASCO approved Battery tester 12V. This specialized battery tester is specifically designed for assessing the condition of batteries and can provide fast and accurate results. Using this approved tester ensures that the assessment is done accurately and in line with industry standards.

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  • 30. 

    Which group of electrical services are likely to be supplied from an emergency generator?

    • Steering gear and alarm system

    • Engine room lighting and bow thrusters

    • Galley and air conditioning

    Correct Answer
    A. Steering gear and alarm system
    Explanation
    An emergency generator is typically used to provide power to critical systems during a power outage or emergency situation. The steering gear and alarm system are essential for the safe operation of a vessel and require a continuous power supply. Engine room lighting and bow thrusters may be important, but they are not as critical as the steering gear and alarm system. The galley and air conditioning are not essential for the immediate safety of the vessel and its occupants, so they are less likely to be supplied from an emergency generator.

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  • 31. 

    The best way of testing the "stand-by" function of the emergency diesel alternator is by: 

    • Causing a total black-out on the ship, for example in dry dock or when time is available in port.

    • By switching off the emergency switch board supply breaker on the main switch board.

    • Switching on the `test run` button on the emergency diesel switchboard

    Correct Answer
    A. Switching on the `test run` button on the emergency diesel switchboard
    Explanation
    The best way of testing the "stand-by" function of the emergency diesel alternator is by switching on the "test run" button on the emergency diesel switchboard. This allows for a controlled and controlled testing of the emergency diesel alternator without causing a total black-out on the ship or switching off the emergency switch board supply breaker on the main switch board.

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  • 32. 

    One of the statements with regards to  Electrical safety Rules & Procedures (ESR) is not correct:

    • The rules apply to all persons carrying out activities involving electrical safety.

    • The rules apply to all those who work in close proximity to electrical equipment

    • The rules apply to electrical persons only and not to shore contractors working on electrical equipment aboard the vessel.

    Correct Answer
    A. The rules apply to electrical persons only and not to shore contractors working on electrical equipment aboard the vessel.
    Explanation
    The correct answer is that the rules apply to electrical persons only and not to shore contractors working on electrical equipment aboard the vessel. This means that the rules do not apply to contractors who are not directly involved in electrical work but are working near electrical equipment. The rules, however, do apply to all persons carrying out activities involving electrical safety, regardless of their role or position.

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  • 33. 

    One of the below areas is not a hazardous area:

    • Areas close to cargo tanks and piping.

    • Areas close to cargo tank and piping relief valves and vents.

    • Motor room with supply fans located outside of the dangerous zones.

    Correct Answer
    A. Motor room with supply fans located outside of the dangerous zones.
    Explanation
    The correct answer is "Motor room with supply fans located outside of the dangerous zones." This area is not considered hazardous because the supply fans are located outside of the dangerous zones, which means they are not in close proximity to any potential hazards such as cargo tanks, piping, relief valves, or vents. Therefore, this area is safe and not classified as a hazardous area.

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  • 34. 

    Electrical equipment could ignite a flammable atmosphere in several ways.

    • Sparks from opening and closing contacts and loose connections

    • High surface temperature

    • All the answers are correct.

    Correct Answer
    A. All the answers are correct.
    Explanation
    All the answers are correct because electrical equipment can ignite a flammable atmosphere through sparks from opening and closing contacts and loose connections, as well as through high surface temperature. Both of these conditions can create a source of ignition that could potentially cause a fire or explosion in a flammable atmosphere.

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  • 35. 

    Ex d is the type of protection designed to:

    • Prevent ignition from arising

    • Prevent ignition from spreading outside enclosure

    • Limit ignition energy

    Correct Answer
    A. Prevent ignition from spreading outside enclosure
    Explanation
    Ex d is a type of protection that is specifically designed to prevent ignition from spreading outside the enclosure. This means that if an ignition event were to occur within the enclosure, the Ex d protection would contain it and prevent it from causing a fire or explosion in the surrounding environment. This type of protection is commonly used in hazardous areas where flammable gases, vapors, or dusts are present, ensuring the safety of personnel and equipment.

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  • 36. 

    One of the following statements with regards to Portable equipment is not correct:

    • It shall be inspected at the earliest opportunity after its arrival on the ship

    • It is subject to regular formal inspection

    • Its supply must be suitable for the area where it will be used.

    • Ship’s Bosun is generally asked to inspect portable electrical equipment.

    Correct Answer
    A. Ship’s Bosun is generally asked to inspect portable electrical equipment.
    Explanation
    The statement that says "Ship’s Bosun is generally asked to inspect portable electrical equipment" is not correct. The inspection of portable electrical equipment is usually conducted by qualified electricians or personnel with specific training in electrical safety. The Bosun's responsibilities typically include deck maintenance, rigging, and other non-electrical tasks. Therefore, it is not their role to inspect portable electrical equipment.

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  • 37. 

    The equipments that maintain a small internal overpressure (of the order of 0.5 mbar minimum) which prevents the entry of a gas/air explosive mixture or flammable substance are known as:

    • Ex-d

    • EX-i

    • EX-p

    Correct Answer
    A. EX-p
    Explanation
    EX-p stands for explosion-protected pressurized equipment. These equipments are designed to maintain a small internal overpressure to prevent the entry of a gas/air explosive mixture or flammable substance. The pressurization helps to keep the hazardous substances out and ensure the safety of the equipment and the surrounding environment.

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  • 38. 

    The use of compact fluorescent (CFL) lamps(CFLs)  is not permitted in the vicinity of marine safety communications equipment. Because:

    • They do not produce enough light

    • These lamps are only for domestic application not marine use.

    • These are banned by US Coast Guard .

    Correct Answer
    A. These are banned by US Coast Guard .
    Explanation
    The US Coast Guard has banned the use of compact fluorescent lamps (CFLs) in the vicinity of marine safety communications equipment.

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  • 39. 

    .A good way to make yourself  less conductive while working on Live panel is

    • Standing on metal deck or near metal structure.

    • Wet deck.

    • Perspiration.

    • A,B & C

    Correct Answer
    A. A,B & C
    Explanation
    Standing on a metal deck or near a metal structure, having a wet deck, and perspiring are all good ways to make oneself less conductive while working on a live panel. Metal is a conductor of electricity, so standing on a metal deck or near a metal structure can help to divert the electrical current away from the person. Having a wet deck can also help to reduce conductivity as water is a poor conductor of electricity. Perspiration can create a layer of moisture on the skin, which can act as a barrier between the person and the electrical current. Therefore, options A, B, and C are all correct ways to make oneself less conductive while working on a live panel.

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  • 40. 

    .A good way to make yourself  less conductive while working on Live panel is

    • Work bare foot

    • Stand on one foot

    • Wear safety shoes

    • Wear safety shoes and use company approved rubber mat

    Correct Answer
    A. Wear safety shoes and use company approved rubber mat
    Explanation
    Wearing safety shoes and using a company-approved rubber mat is a good way to make yourself less conductive while working on a live panel. Safety shoes are designed to provide insulation and protect against electrical hazards. The rubber mat acts as an additional layer of insulation, reducing the risk of electric shock. By combining both safety measures, the chances of electrical conductivity and potential accidents are minimized, ensuring a safer working environment.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 01, 2011
    Quiz Created by
    Jimbrown

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