Basic Electricity - Senior Secondary 2 - Transmission of electricity II

Transmission of electricity II

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TERM: 1ST TERM

WEEK FOUR

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: TRANSMISSION OF ELECTRICITY II

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Identify the functions of each components of the electrical system

II.) Discuss the layout of transmission system

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher highlights the components of electrical system and discuss their functions individually

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher explains the layout of transmission of electricity

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

TRANSMISSION OF ELECTRICITY

Functions Of Components Of electrical system

The following are the functions of the components of an electrical system:

  1. Power Generation: Generate electrical energy from various sources like coal, natural gas, nuclear, hydroelectric, wind, or solar power.
  2. Transmission:

   - Transmit electricity over long distances from power plants to substations.

   - Maintain high voltages to minimize energy losses during transmission.

  1. Substations:

   - Step down high-voltage electricity to lower voltages suitable for distribution.

   - Monitor and control the flow of electricity.

   - Provide switching and protection functions.

  1. Distribution Lines:

   - Distribute electricity from substations to homes, businesses, and other consumers.

   - Carry lower-voltage electricity safely to end-users.

  1. Transformers:

   - Change the voltage levels to match the requirements of the electrical system.

   - Step up voltage for long-distance transmission and step down for local distribution.

  1. Circuit Breakers:

   - Protect the electrical system from overloads, short circuits, and faults by interrupting the flow of electricity.

   - Ensure safety for both the system and consumers.

  1. Switches:

   - Control the flow of electricity, allowing for the isolation of circuits for maintenance and repairs.

   - Enable the operation of different parts of the electrical system as needed.

  1. Meters:

   - Measure the amount of electricity consumed by homes, businesses, and other consumers.

   - Provide data for billing purposes and help monitor energy usage..

Layout of transmission of electric power

The layout of electric power transmission typically involves power plants generating electricity, which is then stepped up in voltage by transformers for efficient long-distance transmission. High-voltage transmission lines carry the electricity to substations, where it's stepped down for distribution to homes and businesses. The layout ensures minimal power loss over long distances and reliable delivery to end-users.

EVALUATION: 1. State 2 functions of the switch

  1. Mention 3 functions of substations
  2. Discuss briefly the layout of transmission of electrical power

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively