Fleet Electrical Safety Rules Test -electrical Operator
This competancy assessment may be used to assess the competancies required by an electrical person.
- 1.
The size of an electric shock current is related to the......
- A.
Applied voltage
- B.
Body resistance
- C.
Both applied voltage and body resistance
Correct Answer
C. Both applied voltage and body resistanceExplanation
The size of an electric shock current is related to both the applied voltage and the body resistance. The applied voltage determines the potential difference across the body, while the body resistance determines the flow of current through the body. Therefore, both factors play a role in determining the size of the electric shock current.Rate this question:
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- 2.
The Insulation resistance value of a machine falls.....
- A.
At low temperature
- B.
At high temperature
- C.
At both low and high temperature both
Correct Answer
B. At high temperatureExplanation
The insulation resistance value of a machine falls at high temperature because high temperatures can cause the insulation material to degrade and become less effective. This can lead to a decrease in the resistance of the insulation, which in turn affects the overall insulation resistance value of the machine.Rate this question:
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- 3.
Insulation and vibration testing are part of .....
- A.
Break down maintenance
- B.
Condition monitoring
- C.
Planned maintenance
Correct Answer
B. Condition monitoringExplanation
Insulation and vibration testing are part of condition monitoring. Condition monitoring involves regularly monitoring the condition of equipment or systems to detect any potential issues or failures. Insulation testing is done to ensure that the insulation material is functioning properly and preventing electrical leakage. Vibration testing is conducted to identify any abnormal vibrations that could indicate mechanical faults or wear and tear. By performing these tests as part of condition monitoring, any potential problems can be identified early on and appropriate maintenance or repairs can be scheduled to prevent further damage or breakdowns.Rate this question:
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- 4.
Infrared Thermography inspection (IRT) cannot help in detecting.....
- A.
High electrical resistance and high loading
- B.
Energised ground cables, open circuits and short circuits
- C.
Dynamic unbalance of a rotating machine
Correct Answer
C. Dynamic unbalance of a rotating machineExplanation
Infrared Thermography inspection (IRT) is a technique that uses infrared cameras to detect and measure the thermal patterns emitted by objects. It is commonly used to identify issues such as high electrical resistance, high loading, energised ground cables, open circuits, and short circuits. However, it is not effective in detecting dynamic unbalance of a rotating machine. This is because dynamic unbalance refers to an uneven distribution of mass within a rotating object, causing it to vibrate. Since IRT focuses on thermal patterns, it cannot directly detect or measure the mechanical imbalance of a rotating machine.Rate this question:
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- 5.
Infrared Thermography inspection (IRT) can be carried out by
- A.
Any electrical person provided he or she knows how to use IRT camera and asked to do so.
- B.
Any electrical person provided he or she knows to use IRT camera and wears proper PPE.
- C.
Only by approved contractors (i.e.Yellotec)
Correct Answer
C. Only by approved contractors (i.e.Yellotec)Explanation
The correct answer states that infrared thermography inspection can only be carried out by approved contractors, specifically Yellotec. This implies that there are certain qualifications or certifications required to perform this type of inspection, and only those who have been approved by Yellotec are authorized to do so. This ensures that the inspection is conducted by professionals who have the necessary knowledge and expertise in using IRT cameras and following proper safety protocols, as indicated by the requirement to wear proper PPE.Rate this question:
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- 6.
. Which statements are correct?
- A.
A risk assessment must be prepared before performing any electrical work
- B.
A risk assessment does not need to be documented for simple tasks such as changing a light fitting
- C.
Risk assessments are only necessary for live work
Correct Answer
B. A risk assessment does not need to be documented for simple tasks such as changing a light fittingExplanation
A risk assessment is a process of identifying and evaluating potential hazards and risks associated with a task or activity. While it is important to conduct a risk assessment before performing any electrical work, it is not always necessary to document the assessment for simple tasks like changing a light fitting. This is because the level of risk involved in such tasks is generally low and well-known, and the necessary precautions can be taken without the need for formal documentation. However, it is still important to assess and manage risks even for simple tasks to ensure safety.Rate this question:
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- 7.
. In which circumstances are contact with electricity most likely to be harmful.
- A.
Touching a 24 V dc battery terminal with hand.
- B.
Using a faulty 110V ac power tool in a damp environment
- C.
Using a faulty 240Vac power tool with RCD.
Correct Answer
B. Using a faulty 110V ac power tool in a damp environmentExplanation
Using a faulty 110V ac power tool in a damp environment can be most harmful because it involves a higher voltage and the presence of moisture increases the conductivity of the electricity. This combination can lead to a higher risk of electric shock or electrocution.Rate this question:
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- 8.
Which statement is correct?
- A.
There is no directly defined boundary between a safe voltage and a dangerous voltage.
- B.
Voltage between 110V are considered safe
- C.
Voltages over 440V are especially dangerous.
Correct Answer
C. Voltages over 440V are especially dangerous.Explanation
Voltages over 440V are especially dangerous because they can cause severe electric shock, burns, and even death. This is because higher voltages have more energy and can overcome the body's resistance, leading to more severe injuries. It is important to handle and work with high voltages with extreme caution and follow proper safety procedures to prevent accidents and injuries.Rate this question:
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- 9.
Who is allowed to open live electrical panels?
- A.
Any ship’s engineer.
- B.
A qualified electrical person.
- C.
A qualified electrical person wearing appropriate PPE.
Correct Answer
C. A qualified electrical person wearing appropriate PPE.Explanation
Opening live electrical panels can be extremely dangerous and can result in electrocution 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) such as insulated gloves and goggles is crucial to minimize the risk of injury.Rate this question:
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- 10.
EPTW is not required for replacing lamps in luminaries installed in:
- A.
Pump room
- B.
Engine room and accommodation places.
- C.
Motor room
Correct Answer
B. Engine room and accommodation places.Explanation
EPTW stands for Electrical Permit to Work, which is a safety procedure used to ensure that electrical work is carried out safely. In this case, the question is asking where EPTW is not required for replacing lamps in luminaries. The correct answer is "Engine room and accommodation places" because these areas do not require an EPTW for replacing lamps in luminaries.Rate this question:
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- 11.
Isolation means:
- A.
Physical separation from all sources of supply.
- B.
Physical separation from all sources of supply and application of safety locks and caution notices to prevent electrical equipment being made live in error.
- C.
Disconnection from live conductors by an open isolator.
Correct Answer
B. 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 the physical separation from all sources of supply and the application of safety locks and caution notices to prevent electrical equipment from being accidentally energized. This ensures that the equipment is completely disconnected and cannot be mistakenly activated, providing a safe working environment for maintenance and repair tasks.Rate this question:
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- 12.
The smoke detector Ion Chambers should never be disposed of by crushing or burning (incinerating) because these contain:
- A.
Explosive material.
- B.
Radioactive material
- C.
Non-ionizing radiation source.
Correct Answer
B. Radioactive materialExplanation
The correct answer is radioactive material. Smoke detectors that use ion chambers contain a small amount of radioactive material, typically Americium-241. This radioactive material is used to ionize the air in the chamber, allowing the detector to sense smoke particles. Crushing or burning the smoke detector could release the radioactive material, posing a health and environmental hazard. Therefore, proper disposal methods should be followed to ensure the safe handling of the radioactive material.Rate this question:
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- 13.
. A voltage not exceeding 1kVAC is
- A.
Medium Voltage (MV)
- B.
Low Voltage (LV)
- C.
High Voltage (HV)
Correct Answer
A. Medium Voltage (MV)Explanation
A voltage not exceeding 1kVAC is considered as Medium Voltage (MV). This is because medium voltage typically ranges from 1kV to 35kV. Voltages below 1kV are generally classified as low voltage (LV), while voltages above 35kV are classified as high voltage (HV). Therefore, a voltage not exceeding 1kVAC falls within the range of medium voltage.Rate this question:
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- 14.
What is meant by being intrinsically safe?
- A.
Electric wiring executed by approved manufacture?
- B.
Product having a special wiring system?
- C.
Cannot produce enough energy to ignite a gas (explode)?
Correct Answer
C. Cannot produce enough energy to ignite a gas (explode)?Explanation
Being intrinsically safe means that a product or wiring system is designed in such a way that it cannot produce enough energy to ignite a gas and cause an explosion. This ensures that even in potentially hazardous environments, the product or wiring system will not pose a risk of causing an explosion.Rate this question:
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- 15.
Zone 0 is a Hazardous area:
- A.
An area in which an explosive gas/air mixture is likely to occur in normal operation.
- B.
In which an explosive gas/air mixture is continuously present, or present for long periods.
- C.
None of the above
Correct Answer
B. 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 an explosion occurring in this zone. It is important to take appropriate safety measures and precautions in Zone 0 to prevent accidents and ensure the safety of individuals working in or around this area.Rate this question:
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- 16.
Arching faults are most likely to occur:
- A.
During circuit breaker insertion
- B.
During circuit breaker removal
- C.
During circuit breaker removal or insertion and during switching operations.
Correct Answer
C. 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, there is a possibility of arcing due to the high voltage and current levels involved. Similarly, during switching operations, there can be arcing due to the sudden change in electrical load. These arcing faults can cause damage to the circuitry and pose a safety risk.Rate this question:
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- 17.
Arc Flash energy is generally much higher:
- A.
Away from the source of power generation.
- B.
Equal at all panels.
- C.
Close to the source of power generation.
Correct Answer
C. 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 is concentrated and has not yet dissipated as it travels further away. As the energy travels through the electrical system, it can lose intensity, making it less dangerous. Therefore, being close to the source of power generation puts individuals at a higher risk of experiencing a more intense and dangerous arc flash event.Rate this question:
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- 18.
Portable electrical equipment is:
- A.
Battery powered devices carried on the person for own use
- B.
Equipment connected by a cable through a plug and receptacle to the ships electrical power system.
- C.
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
C. 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 battery-powered and carried on a person for personal use, as well as equipment connected to a ship's electrical power system via a cable and plug. Therefore, the correct answer is that any appliance that is hand-held or can be moved while connected to an electricity supply via a lead and plug is considered portable.Rate this question:
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- 19.
Start or stop an electric generator set from a remote control station can be performed by:
- A.
Electrical Person
- B.
Electrical Operator
- C.
Both of them may perform this routine.
Correct Answer
C. 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 suggests that both individuals have the necessary knowledge and skills to operate the generator set from a remote location.Rate this question:
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- 20.
Work on electrical equipment operating on a nominal 24 V installed in non hazardous area can be performed by:
- A.
Electrical Operator
- B.
Electrical Person LV and electrical person MV
- C.
A & B
Correct Answer
C. A & BExplanation
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 means that both an Electrical Operator and an Electrical Person LV and MV have the necessary skills and qualifications to work on electrical equipment operating at 24 V in a non-hazardous area.Rate this question:
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- 21.
What will you do if you are told to operate unknown mechanical equipment?
- A.
Do not operate the machine, but read the manual before reporting to the head of your department
- B.
Seek advice from your superior before attempting to operate it.
- C.
As time is money, the trial and error method shall be used.
Correct Answer
B. Seek advice from your superior before attempting to operate it.Explanation
When faced with operating unknown mechanical equipment, it is important to seek advice from a superior before attempting to operate it. This is because operating unfamiliar machinery without proper knowledge or guidance can be dangerous and potentially result in accidents or damage. Seeking advice from a superior ensures that you have the necessary information and guidance to operate the equipment safely and effectively. Reading the manual and reporting to the head of your department are also important steps, but seeking advice from a superior should be the first course of action.Rate this question:
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- 22.
Portable electrical tools are not suitable for use in:
- A.
Accommodation areas.
- B.
All non-accommodation areas.
- C.
In hazardous areas.
Correct Answer
C. In hazardous areas.Explanation
Portable electrical tools are not suitable for use in hazardous areas because they can pose a risk of igniting flammable substances or causing explosions. Hazardous areas typically have a higher concentration of flammable gases, vapors, or dust, and using electrical tools in such areas can create a potential source of ignition. Therefore, it is important to use specially designed tools that are intrinsically safe and approved for use in hazardous environments.Rate this question:
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- 23.
Electrical test Equipments for use on STASCO managed vessels:
- A.
Can be from any Maker supplied through RS Components.
- B.
Should be selected from the list approved by the managing office (OTS/332).
- C.
Should be from quality manufacturer and expensive.
Correct Answer
B. 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 means that the electrical test equipment used on STASCO managed vessels should be chosen from a specific list that has been approved by the managing office. This ensures that the equipment meets the necessary standards and requirements for use on the vessels.Rate this question:
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- 24.
Live working on medium voltage systems is:
- A.
Permitted under special circumstances provided suitable PPE is worn.
- B.
Permitted only if the work is carried out by Electrical Person (MV).
- C.
Strictly forbidden in all circumstances.
Correct Answer
C. Strictly forbidden in all circumstances.Explanation
Live working on medium voltage systems is strictly forbidden in all circumstances. This means that under no circumstances should work be carried out on medium voltage systems while they are live. This is because working on live systems poses a significant risk to the safety of the workers involved. It is important to de-energize the system and follow proper safety procedures before conducting any maintenance or repairs on medium voltage systems.Rate this question:
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- 25.
Risk assessments are carried out in order to:
- A.
Meet a legal requirement under the Health and Safety Regulations.
- B.
To identify the extent of hazards in the work place and to put control measures to reduce or eliminate the hazard.
- C.
A & B
Correct Answer
C. A & BExplanation
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 and put control measures in place to reduce or eliminate the hazard. By conducting risk assessments, organizations ensure compliance with legal regulations and create a safe working environment by identifying potential hazards and implementing measures to mitigate them. This helps protect the health and safety of employees and reduces the risk of accidents or injuries in the workplace.Rate this question:
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- 26.
Two pole voltage Detectors are better than Digital Multimeters because:
- A.
These are cheap and easy to find.
- B.
Comparatively Safe, no connection errors and no danger of arching due their two-handed operation.
- C.
They are easy to use.
Correct Answer
B. 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, with no connection errors and no danger of arching due to their two-handed operation. This means that they provide a higher level of safety when working with electricity. Additionally, they are easy to use and are cheap and easy to find, making them a convenient option for voltage detection.Rate this question:
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- 27.
When using test equipment in hazardous area.
- A.
Always carry spare batteries.
- B.
Open equipment and check the condition of the fuse and batteries before each use.
- C.
Use Type approved fuses and batteries and never carriy spare batteries and open the equipment at work place
Correct Answer
C. Use Type approved fuses and batteries and never carriy spare batteries and open the equipment at work placeExplanation
When using test equipment in a hazardous area, it is important to use type-approved fuses and batteries. This ensures that the equipment is designed to safely operate in the specific hazardous environment and reduces the risk of accidents or malfunctions. Additionally, it is advised not to carry spare batteries and open the equipment at the workplace to prevent any potential hazards or dangers.Rate this question:
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- 28.
For testing and any “Live” work on low voltage electrical equipment
- A.
Any type and size of non-conducting mats can to be used.
- B.
Type approved matting provided by STASCO as part of the electrical safety kit on each ship is to be used.
- C.
Non-conducting mats are not necessary for “Live” work
Correct Answer
B. Type approved matting provided by STASCO as part of the electrical safety kit on each ship is to be used.Explanation
The correct answer is to use the type approved matting provided by STASCO as part of the electrical safety kit on each ship. This implies that the company has already selected and approved specific mats that meet the necessary safety standards for working with low voltage electrical equipment. Therefore, it is recommended to use these mats rather than any other type or size of non-conducting mats. Additionally, the statement mentions that non-conducting mats are not necessary for "Live" work, further emphasizing the importance of using the approved matting provided by STASCO.Rate this question:
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- 29.
Fast and accurate assessment of Life &Rescue Boat battery condition can be done:
- A.
By regular testing battery voltage using digital multimeter.
- B.
By carrying out2/3engine start each week.
- C.
With the help of STASCO approved Battery tester 12V
Correct Answer
C. With the help of STASCO approved Battery tester 12VExplanation
The correct answer suggests that the fast and accurate assessment of Life & Rescue Boat battery condition can be done with the help of a STASCO approved Battery tester 12V. This implies that using this specific battery tester is the most effective and reliable method for assessing the battery condition, as it has been approved by STASCO, indicating that it meets the necessary standards and requirements for accurate testing.Rate this question:
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- 30.
Which group of electrical services are likely to be supplied from an emergency generator?
- A.
Steering gear and alarm system
- B.
Engine room lighting and bow thrusters
- C.
Galley and air conditioning
Correct Answer
A. Steering gear and alarm systemExplanation
An emergency generator is typically used as a backup power source in case of a power outage. The steering gear and alarm system are critical components for the safe operation of a vessel, and they require a continuous power supply. Therefore, it is likely that these electrical services would be supplied from an emergency generator to ensure their uninterrupted operation.Rate this question:
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- 31.
The best way of testing the "stand-by" function of the emergency diesel alternator is by:
- A.
Causing a total black-out on the ship, for example in dry dock or when time is available in port.
- B.
By switching off the emergency switch board supply breaker on the main switch board.
- C.
Switching on the `test run` button on the emergency diesel switchboard
Correct Answer
C. Switching on the `test run` button on the emergency diesel switchboardExplanation
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 test 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.Rate this question:
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- 32.
One of the statements with regards to Electrical safety Rules & Procedures (ESR) is not correct:
- A.
The rules apply to all persons carrying out activities involving electrical safety.
- B.
The rules apply to all those who work in close proximity to electrical equipment
- C.
The rules apply to electrical persons only and not to shore contractors working on electrical equipment aboard the vessel.
Correct Answer
C. The rules apply to electrical persons only and not to shore contractors working on electrical equipment aboard the vessel.Explanation
The given answer is correct because it states that the Electrical Safety Rules and Procedures (ESR) apply only to electrical persons and not to shore contractors working on electrical equipment aboard the vessel. This means that the rules do not apply to individuals who are not specifically trained or qualified in electrical work, such as shore contractors.Rate this question:
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- 33.
One of the below areas is not a hazardous area:
- A.
Areas close to cargo tanks and piping.
- B.
Areas close to cargo tank and piping relief valves and vents.
- C.
Motor room with supply fans located outside of the dangerous zones.
Correct Answer
C. 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, meaning they are not in close proximity to any potential hazards such as cargo tanks, piping, relief valves, or vents.Rate this question:
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- 34.
Electrical equipment could ignite a flammable atmosphere in several ways.
- A.
Sparks from opening and closing contacts and loose connections
- B.
High surface temperature
- C.
All the answers are correct.
Correct Answer
C. All the answers are correct.Explanation
All the answers provided 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 scenarios can create a source of ignition that can potentially ignite the flammable atmosphere.Rate this question:
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- 35.
Ex d is the type of protection designed to:
- A.
Prevent ignition from arising
- B.
Prevent ignition from spreading outside enclosure
- C.
Limit ignition energy
Correct Answer
B. Prevent ignition from spreading outside enclosureExplanation
Ex d is a type of protection that is specifically designed to prevent ignition from spreading outside of the enclosure. This means that if there is an ignition event within the enclosure, such as a spark or flame, the design of the Ex d protection will ensure that it does not propagate to the surrounding environment. This is achieved through various measures, such as the use of flameproof enclosures and sealing techniques, to contain any potential ignition sources within the enclosure and prevent them from causing a larger fire or explosion.Rate this question:
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- 36.
One of the following statements with regards to Portable equipment is not correct:
- A.
It shall be inspected at the earliest opportunity after its arrival on the ship
- B.
It is subject to regular formal inspection
- C.
Its supply must be suitable for the area where it will be used.
- D.
Ship’s Bosun is generally asked to inspect portable electrical equipment.
Correct Answer
D. Ship’s Bosun is generally asked to inspect portable electrical equipment.Explanation
The correct answer is "Ship’s Bosun is generally asked to inspect portable electrical equipment." This statement is not correct because the inspection of portable electrical equipment is usually carried out by a qualified electrician or a designated competent person, not the ship's Bosun. The Bosun's responsibilities typically include maintenance and repair of the ship's equipment and supervising the deck crew.Rate this question:
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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:
- A.
Ex-d
- B.
EX-i
- C.
EX-p
Correct Answer
C. EX-pExplanation
EX-p refers to equipment that is designed to maintain a small internal overpressure, which prevents the entry of a gas/air explosive mixture or flammable substance. This means that the equipment is specifically designed to prevent the occurrence of explosions or fires by keeping the internal pressure higher than the external environment. This ensures that any potential explosive or flammable substances are contained within the equipment and do not pose a risk to the surrounding area.Rate this question:
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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:
- A.
They do not produce enough light
- B.
These lamps are only for domestic application not marine use.
- C.
These are banned by US Coast Guard .
Correct Answer
C. These are banned by US Coast Guard . -
- 39.
.A good way to make yourself less conductive while working on Live panel is
- A.
Standing on metal deck or near metal structure.
- B.
Wet deck.
- C.
Perspiration.
- D.
A,B & C
Correct Answer
D. A,B & CExplanation
Standing on a metal deck or near a metal structure can make a person less conductive while working on a live panel. This is because metal is a good conductor of electricity, so standing on or near it can help to dissipate any electrical charge and reduce the risk of electric shock. Wet deck and perspiration can also help to make a person less conductive as moisture can provide a path for the electrical current to flow through, rather than through the person's body. Therefore, options A, B, and C are all correct ways to make oneself less conductive while working on a live panel.Rate this question:
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- 40.
.A good way to make yourself less conductive while working on Live panel is
- A.
Work bare foot
- B.
Stand on one foot
- C.
Wear safety shoes
- D.
Wear safety shoes and use company approved rubber mat
Correct Answer
D. Wear safety shoes and use company approved rubber matExplanation
To make yourself less conductive while working on a live panel, it is important to wear safety shoes and use a company-approved rubber mat. Safety shoes are designed to provide insulation and protect against electrical shocks. The rubber mat acts as an additional layer of insulation, reducing the risk of electrical conductivity. By combining these two safety measures, you can minimize the chances of electrical accidents and ensure a safer working environment.Rate this question:
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Mar 15, 2023Quiz Edited by
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Apr 25, 2017Quiz Created by
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