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Questions and Answers
What is the primary function of a circuit breaker in the context of short circuits?
What is the primary function of a circuit breaker in the context of short circuits?
What happens when a short circuit occurs?
What happens when a short circuit occurs?
Which of the following is NOT an example of a hand tool?
Which of the following is NOT an example of a hand tool?
What is the primary advantage of using power tools over hand tools?
What is the primary advantage of using power tools over hand tools?
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Which category of hand tools are rulers, tape measures, calipers, and levels classified under?
Which category of hand tools are rulers, tape measures, calipers, and levels classified under?
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Which of the following hand tools is designed for pulling, removing, or loosening materials?
Which of the following hand tools is designed for pulling, removing, or loosening materials?
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What is the primary difference between electric power tools and cordless power tools?
What is the primary difference between electric power tools and cordless power tools?
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Which type of hand tools are used for cutting through materials like wood, metal, and plastic?
Which type of hand tools are used for cutting through materials like wood, metal, and plastic?
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What is the primary cause of most electrical accidents?
What is the primary cause of most electrical accidents?
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Which of the following best describes an 'open circuit'?
Which of the following best describes an 'open circuit'?
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What does 'resistance' in an electrical circuit primarily measure?
What does 'resistance' in an electrical circuit primarily measure?
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What does the term 'intrinsically safe equipment' refer to?
What does the term 'intrinsically safe equipment' refer to?
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What immediate action should a person take after being involved in an electrical accident?
What immediate action should a person take after being involved in an electrical accident?
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What is the meaning of 'ventricular fibrillation' in the context of electrical safety?
What is the meaning of 'ventricular fibrillation' in the context of electrical safety?
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Which standard specifically addresses the safety of computers, printers, and telecommunications equipment?
Which standard specifically addresses the safety of computers, printers, and telecommunications equipment?
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What is the main purpose of the ISO 9001 standard in relation to electronics manufacturing?
What is the main purpose of the ISO 9001 standard in relation to electronics manufacturing?
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If a worker is unsure about a safety rule or procedure related to electrical work, what should their immediate course of action be?
If a worker is unsure about a safety rule or procedure related to electrical work, what should their immediate course of action be?
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A discharge of electricity through a gas is called what?
A discharge of electricity through a gas is called what?
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Which standard is directly relevant for the safe installation of electrical and electronic systems in buildings?
Which standard is directly relevant for the safe installation of electrical and electronic systems in buildings?
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Which of the following accurately describes the impact of electronics standards on consumer safety?
Which of the following accurately describes the impact of electronics standards on consumer safety?
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How do electronics standards contribute to the Philippine economy?
How do electronics standards contribute to the Philippine economy?
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What is the primary focus of the IEC 61508 standard?
What is the primary focus of the IEC 61508 standard?
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Which standard is essential for minimizing environmental impact in the electronics industry?
Which standard is essential for minimizing environmental impact in the electronics industry?
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How do electronics standards promote innovation and reliability in the Philippines?
How do electronics standards promote innovation and reliability in the Philippines?
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Which of the following tools is powered by compressed air?
Which of the following tools is powered by compressed air?
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What is the primary function of soldering in electronics?
What is the primary function of soldering in electronics?
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What organization is responsible for setting the national standards for electronic products in the Philippines?
What organization is responsible for setting the national standards for electronic products in the Philippines?
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Which of the following activities could potentially lead to an electrical hazard?
Which of the following activities could potentially lead to an electrical hazard?
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Which standard aligns with global practices for the safety of electrical and electronic equipment in the Philippines?
Which standard aligns with global practices for the safety of electrical and electronic equipment in the Philippines?
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What does the 'D' in the DRSABCD first aid principle stand for?
What does the 'D' in the DRSABCD first aid principle stand for?
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Which of the following standards is specifically for the safety of electrical appliances?
Which of the following standards is specifically for the safety of electrical appliances?
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What is the first step you should take if you encounter someone receiving an electric shock?
What is the first step you should take if you encounter someone receiving an electric shock?
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Which of the following statements regarding the Philippine Electronics Industry is incorrect?
Which of the following statements regarding the Philippine Electronics Industry is incorrect?
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What first aid principle involves ensuring the patient's airway is clear?
What first aid principle involves ensuring the patient's airway is clear?
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Which of the following ISO standards is focused on Quality Management?
Which of the following ISO standards is focused on Quality Management?
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What is the purpose of CPR?
What is the purpose of CPR?
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Why is it important to assess the situation before approaching a person receiving an electrical shock?
Why is it important to assess the situation before approaching a person receiving an electrical shock?
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What does compliance with ISO 14001 ensure for the Philippine electronics industry?
What does compliance with ISO 14001 ensure for the Philippine electronics industry?
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Which of the following could be a result of an electrical hazard?
Which of the following could be a result of an electrical hazard?
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What does 'DRSABCD' stand for in first aid?
What does 'DRSABCD' stand for in first aid?
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What is the primary purpose of grounding in electrical systems?
What is the primary purpose of grounding in electrical systems?
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What device is commonly used to detect and prevent ground faults?
What device is commonly used to detect and prevent ground faults?
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Which of the following is NOT part of the recommended protective gear when working with electrical devices?
Which of the following is NOT part of the recommended protective gear when working with electrical devices?
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What issue arises during a ground fault?
What issue arises during a ground fault?
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What should be done if electrical equipment is found to be damaged?
What should be done if electrical equipment is found to be damaged?
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Which term describes the unintentional connection of a live conductor to the ground?
Which term describes the unintentional connection of a live conductor to the ground?
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What does 'lock-out/tag-out' procedures involve?
What does 'lock-out/tag-out' procedures involve?
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What is the role of barricade tape in electrical safety?
What is the role of barricade tape in electrical safety?
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Study Notes
Electrical Safety and Precautions
- Electrical safety precautions are crucial for handling hazardous chemicals and responding to electrical shocks.
- Appropriate Personal Protective Equipment (PPE), fire extinguishers, and proper first aid procedures (e.g., CPR, burns) are essential.
- Consistently advocating for safe practices, encouraging others to wear PPE, and reporting hazards is crucial.
Objectives
- Understand the importance of general safety precautions when handling hazardous chemicals.
- Properly respond to electrical shocks.
- Use appropriate PPE and fire extinguishers.
- Accurately apply first aid techniques, like CPR or treating burns.
- Demonstrate proactive safety behaviours by promoting safe practices and reporting hazards to supervisors.
Terminologies
- Ventricular fibrillation is when the heart beats irregularly and stops pumping blood.
- Cardiopulmonary resuscitation (CPR) helps maintain blood circulation and breathing.
- Electrical arc is a discharge of electricity through a gas.
- Qualified personnel are knowledgeable about electrical equipment and its associated hazards.
- Intrinsically Safe equipment is designed to minimise the risk of ignition in hazardous environments.
Importance of Electrical Safety
- Prevention is key: recognize and avoid electrical dangers.
- Adhere to safety procedures and use proper protective gear.
- Ask questions: If unsure about a rule or procedure, seek clarification.
- Accidents are preventable: unsafe actions (carelessness, fatigue, stress) cause most incidents. Report unsafe conditions immediately to supervisors.
- Be responsible: follow safety guidelines and inform supervisors of incidents promptly, seeking medical help when needed.
Electric Circuit
- Electricity flows through a circuit, similar to water flowing through a pipe.
- A circuit needs a source of energy (like a generator or battery) to move electrons and a conductor (wire) to carry the flow.
Open Circuit vs. Closed Circuit
- Open Circuit: A break in the circuit stops the current flow (e.g., switch off).
- Closed Circuit: A complete path allows current to flow. The human body is a conductor, completing a circuit, thus causing electric shock when exposed to live wires.
Current vs Resistance
- Current (Amperes, A): Measures the flow of electricity.
- Resistance (Ohms, Ω): The opposition to the electricity flow in a wire, leading to energy loss (measured in volts, V).
Electrical Hazard Awareness
- Hazards exist—recognize potential and actual threats to people, machinery, and the environment.
- Examples include: contact with overhead wires, maintenance on live equipment, working with damaged electrical equipment, exposure to rain or water-damaged equipment.
How do you respond to electrical incidents?
- If someone is experiencing an electric shock, disconnect the power supply (if possible) whilst ensuring your own safety.
- Take precautions to protect yourself and others.
- Apply first aid principles (e.g., DRSABCD).
- Assess injuries and move casualties to a safe area.
- Seek immediate medical attention if needed.
Apply the first aid principles (e.g., DRSABCD)
- Danger: Check for potential risks to yourself, the victim, and others (e.g., turn off the electricity supply in an electrical incident).
- Response: Check if the person is responsive.
- Send for Help: Call emergency services if the person is unresponsive or needs urgent medical attention.
- Airway: Clear any blockages from the airway (e.g., remove food or vomit from the mouth).
- Breathing: Check for breathing by looking, listening, and feeling.
- CPR: If no breathing, administer CPR: 30 chest compressions followed by 2 rescue breaths.
- Defibrillation: If an AED is available, administer defibrillation as per the instructions.
Levels of Effect of Electric Current on the Human Body
- Varying levels of electric current cause varying effects on the human body, ranging from slight tingling to death.
You Can Safely Protect Yourself from Electricity!
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Avoid metal objects: metal conducts electricity.
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Turn off power: switch off electricity before working with electrical equipment.
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Wear appropriate clothing: wear non-conductive clothing and rubber-soled shoes.
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Don't touch live parts: do not touch live electrical components.
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Use qualified professionals: Only let trained professionals install or repair electrical equipment.
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Clean and dry leads and plugs.
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Wear personal protective equipment (PPE) such as insulated gloves when handling electricity.
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Heed warning signs around electrical equipment.
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Use the correct equipment for the task.
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Take care of extension leads: inspect them before use.
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Use residual current devices (RCDs) to protect against electric shocks.
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Use proper fuses and circuit breakers to avoid electrical overloads.
Electric Shock
- An electric shock occurs when a person comes into contact with an electrical current.
- The human body conducts electricity, disrupting bodily functions (especially the heart and muscles) and potentially leading to death.
- The severity of a shock depends on factors like voltage, current, duration, and the path electricity takes through the body.
Key Points About Electric Shock
- How electric shock happens: the body completes an electrical circuit.
- Factors affecting shock severity: voltage, current, duration, path.
- Effects of shock: mild (tingling), moderate (muscle spasms), severe, heart damage.
Prevention of Electric Shock
- Turn off power: always turn off electrical sources before working on equipment.
- Use PPE: wear insulated gloves, rubber soles, and additional gear.
- Avoid water: avoid working with electricity near water.
- Inspect equipment: regularly check tools and equipment for damage.
- Proper training: be properly trained before working with electrical systems.
Staying Alive! Protecting Yourself, Gear Up, Stay Alert
- Flash suits, gloves, head protection (hard hats), safety glasses.
Others (Additional Safety Gear, Procedures, and Equipment)
- Safety harnesses and lifelines, lockout/tagout devices, barricade tape, electrical tools, voltage testers.
Grounding, Ground Faults, and Short Circuits
- Grounding: Connecting electrical systems to the earth to provide a low-resistance path for electrical currents, preventing shocks and damage.
- Ground faults: unintended connections between a live wire and a ground, creating a hazardous situation.
- Short circuits: direct connections between conductors of opposite polarity, causing excessive current, potential damage (wiring, insulation, components), and fire.
Terminologies
- Ground (electrical): any connection between an electronic circuit and the earth.
- Ground fault: any unplanned connection of a live wire to the earth or unintended grounding.
- Grounding structure: a metal frame or structure not connected to earth.
- Ground fault circuit interrupter (GFCI): a device that automatically interrupts an electrical circuit if it detects an electrical fault or ground fault.
- Static electricity: unlike current electricity, it involves electrons accumulating on an object.
Key Points About Grounding
- Grounding is about connecting electrical systems to the earth.
- A low resistance path is thus created for faults.
- Shocks and damage are prevented.
- Prevents surges to protect equipment and people.
Summary
- Grounding creates a safe path for current.
- Ground faults occur when live wires touch the earth.
- Short circuits happen when wires of opposing polarity touch, potentially causing damage.
Hand Tools, Power Tools, and Soldering
- Hand Tools: manual instruments (e.g., cutting tools, measuring tools, fastening tools, striking tools, extracting tools) for tasks without power.
- Power Tools: tools that use electricity, batteries, or compressed air (e.g., drills, saws, grinders, sanders, air drills, impact wrenches, chainsaws, lawnmowers) for efficiency and reduced strain during tasks.
- Soldering: joining metal components by using a filler material called solder. This is crucial in the electronics industry for connecting wires and components to circuit boards.
Standards
- Standards are guidelines, specifications, or norms ensuring quality, consistency, and safety in products and processes.
- These are applicable across industries like manufacturing, construction, and electronics.
Key Standards for Electronics in the Philippines
- The Bureau of Philippine Standards (BPS) sets national standards for electronic products
- Philippine National Standards (PNS) for electronics, such as PNS 166-2014 and IEC 60335, ensure safety.
- International standards like IEC 60364 and IEC 61508 set functional safety standards for electrical and electronic systems.
- ISO 9001 and ISO 14001 ensure product quality and environmental impact.
Importance of Electronics Standards in the Philippines
- Consumer safety: ensures reliable and safe equipment.
- Market access: improves access to international markets.
- Environmental protection: supports sustainable practices in electronics manufacturing.
- Innovation and reliability: promotes technological advancements and the development of efficient devices.
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Description
Test your knowledge on electrical safety, the function of circuit breakers, and the use of hand tools. This quiz covers essential concepts related to circuits, tool classifications, and safety measures in electrical work. Perfect for students and professionals in the electrical and construction fields.
