Basic Electricity - Senior Secondary 2 - AC current generation

AC current generation

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TERM: 1ST TERM

WEEK EIGHT

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: AC CURRENT GENERATION

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

I.) Define and AC motor

II.) Identify the characteristics of an AC generator

III.) State the real life applications of AC generators

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 explains the meaning of AC motor and discusses the characteristics of an AC generator

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher state and describe some of the real life applications of AC generators.

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

AC CURRENT GENERATION

An AC motor, or alternating current motor, is a type of electric motor that operates using alternating current (AC) as its power source. It converts electrical energy into mechanical energy to drive various mechanical devices.

Characteristics of an AC generator:

  1. Alternating Current Output: AC generators produce alternating current electricity, where the direction of current flow periodically reverses.
  2. Electromagnetic Induction: Similar to an AC motor, AC generators operate on the principle of electromagnetic induction, where a changing magnetic field induces an electric current in conductors.
  3. Voltage Regulation: AC generators can maintain relatively stable voltage output under varying load conditions through voltage regulation mechanisms such as automatic voltage regulators (AVRs).
  4. Frequency Control: The frequency of the generated AC power (measured in Hertz) is typically controlled to match the requirements of the connected electrical system.

Real-life applications of AC generators

  1. AC generators are used in power plants to generate electricity for residential, commercial, and industrial applications.
  2. They provide backup power in critical facilities such as hospitals, data centers, and telecommunications networks during power outages.
  3. AC generators are integral components of renewable energy systems such as wind turbines, hydroelectric plants, and solar power systems, converting mechanical energy into electrical energy.
  4. AC generators power electrical systems on ships, boats, and offshore platforms.
  5. AC generators provide portable and stationary power for construction sites, mining operations, and other remote locations where grid power is unavailable.

EVALUATION: 1. What is an AC motor?

  1. State 4 characteristics of AC generators
  2. Mention 4 real life applications of AC generators.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively