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

    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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    Quiz Team

    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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