Electrical Symbols and Their Functions
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Questions and Answers

What is the primary use of electrical symbols in diagrams?

  • To create a list of electrical devices
  • To depict the physical appearance of electrical fixtures
  • To outline the safety measures in electrical work
  • To represent various electrical devices in a circuit (correct)

Which symbol represents a device that measures current in a circuit?

  • Voltmeter
  • Wattmeter
  • Ammeter (correct)
  • Galvanometer

Which device in the table is indicated by the symbol for a fuse?

  • Circuit Breaker (correct)
  • Push Button
  • Speaker
  • Resistor

What does the symbol for a capacitor represent in an electrical circuit?

<p>Energy storage (C)</p> Signup and view all the answers

Which of the following symbols denotes a device for controlling current flow?

<p>Switch (D)</p> Signup and view all the answers

What does the symbol for a diode represent?

<p>A device that allows current to flow in one direction (B)</p> Signup and view all the answers

Which electrical symbol represents a duplex convenience outlet?

<p>The symbol used for a standard wall outlet with two sockets (D)</p> Signup and view all the answers

What is the purpose of the lightning arrester symbol?

<p>To represent a device that protects against electrical surges (C)</p> Signup and view all the answers

Which electrical symbol is associated with a service entrance that includes three wires?

<p>The symbol illustrating a service entrance for electrical supply (B)</p> Signup and view all the answers

What does the symbol for an incandescent lamp represent?

<p>A light source powered by electricity (A)</p> Signup and view all the answers

What does the CAUTION symbol indicate?

<p>It indicates minor or moderate injury risks. (C)</p> Signup and view all the answers

Which symbol instructs that an activity is not allowed?

<p>Prohibition (C)</p> Signup and view all the answers

What should a person do when they see the SAFETY ALERT symbol?

<p>Observe extra awareness. (D)</p> Signup and view all the answers

Which of the following is NOT represented by a warning icon?

<p>Mandatory protective measures. (C)</p> Signup and view all the answers

Why is it important to understand the warning icons on a power tool manual?

<p>To operate the tool more effectively. (B)</p> Signup and view all the answers

What should one do if they see a 'DANGER' symbol?

<p>Avoid the hazardous situation to prevent serious injury or death. (C)</p> Signup and view all the answers

What does a 'WARNING' symbol signify?

<p>A potentially hazardous situation may lead to serious injury or death. (D)</p> Signup and view all the answers

When should one read the instruction manual according to the safety symbols?

<p>Before doing any activity related to the equipment. (B)</p> Signup and view all the answers

What does the 'WEAR EYE PROTECTION' symbol indicate?

<p>Safety goggles or eye protection should be worn. (B)</p> Signup and view all the answers

What action is advised when encountering the 'DANGER HIGH VOLTAGE KEEP OUT' symbol?

<p>Stay away to prevent risk of shock or injury. (A)</p> Signup and view all the answers

What does the 'VOLTAGE DANGER' symbol alert individuals to?

<p>There are high voltage areas and equipment present, noting 400 Volts. (B)</p> Signup and view all the answers

What does the 'ELECTRICAL HAZARD' symbol represent?

<p>An electrical hazard is present in the area. (A)</p> Signup and view all the answers

Why is it important to follow safety instructions?

<p>To prevent potential harm and ensure safety. (A)</p> Signup and view all the answers

Flashcards

Electrical Symbols

Small drawings representing electrical devices in circuit diagrams.

Conductor/Wire Symbol

A symbol representing a wire or conductor in an electrical circuit.

Switch Symbol

A symbol that represents an electrical switch in a circuit.

Ammeter Symbol

A symbol that represents an instrument for measuring electric current.

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Resistor Symbol

A symbol that represents a component that opposes current flow in a circuit.

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Diode Symbol

A symbol representing a semiconductor device that allows current to flow in one direction only.

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Ground Symbol

A symbol representing a connection to the earth, providing a return path for electrical current.

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Lightning Arrester Symbol

A symbol representing a device that protects electrical equipment from damage caused by lightning strikes.

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Duplex Convenience Outlet Symbol

A symbol representing an electrical outlet with two receptacles, commonly used for plugging in devices.

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Incandescent Lamp Symbol

A symbol representing a light bulb that uses a filament to generate light by heating it.

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Caution Symbol

Indicates a potential situation that could lead to minor or moderate injury if not avoided.

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Safety Alert Symbol

Warns the user to pay close attention to potential risks and take extra precautions.

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Prohibition Symbol

Indicates an action that is strictly prohibited.

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What do warning icons do?

Help users understand potential risks and follow safety instructions.

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Why are warning icons important?

They help users operate tools safely and prevent accidents.

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Safety Symbol

A standardized graphic used to warn about potential dangers, hazards, or instructions.

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Danger Symbol

A symbol indicating a hazardous situation that could result in severe injury or death if not avoided.

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Warning Symbol

A symbol indicating a potentially hazardous situation that could lead to severe injury or death if not avoided.

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Read Manual Symbol

A symbol that advises reading and understanding the instruction manual before operating equipment.

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Eye Protection Symbol

A symbol indicating the need to wear protective eyewear.

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High Voltage Danger Symbol

A symbol indicating a high voltage hazard, requiring a safe distance due to the risk of electrocution.

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Voltage Danger Symbol

A symbol indicating a high voltage present, typically accompanied by the voltage value.

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Electrical Hazard Symbol

A symbol indicating the presence of an electrical hazard, potentially causing shocks or injuries.

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Study Notes

Electrical Symbols

  • Electrical symbols are small drawings or pictograms used to represent various electrical devices in a diagram or plan of an electrical circuit

  • Used in sketching schematic diagrams and electrical plans for numerous types of electrical works.

  • Practically any electrical fixture found in a house has a symbol that coincides to said fixture on an electrical wiring diagram. This are very useful guide for an electrician or electrical contractor, thus, making the wiring easier to install as well.

  • Symbol | Description | Symbol | Description

  • --|---|---|---

  • Straight line | Conductor/Wire | A | Ammeter

  • Two short lines connected | Terminal | V | Voltmeter

  • Series of curved lines | Switch | G | Galvanometer

  • Series of wavy lines | Fuse | W | Wattmeter

  • Plus and minus sign connected by a line | Connected Wires | Arrow pointing with lines to side | Wires Not Connected

  • Curved line with a wide arc | Circuit Breaker | Circle with a dot inside | Push Button

  • Series of parallel lines | Cell | Horizontal rectangle with slight curved line | Bell

  • Multiple parallel lines| Battery | Horizontal rectangle with diagonal lines | Buzzer

  • Series of wavy lines| Resistor | Cone shape with horizontal lines | Speaker

  • Two horizontal lines connected by a diagonal line | Capacitor | Two horizontal lines connected by a T shape | Antenna

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Description

This quiz focuses on various electrical symbols used in diagrams and plans for electrical circuits. Participants will learn to identify symbols for devices like ammeters, voltmeters, and circuit breakers. Understanding these symbols is essential for electricians and anyone involved in electrical work.

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