Teacher explains RL, RC and RLC circuits. Students explain RL, RC, and RLC circuits. Calculator resistors, inductors, capacitors, AC source. Circuit diagrams, teacher demonstrates the operations of RL, Intructional Materials; RC, and RLC circuits.
3
ALTERNATING CURRENT;
CALCULATION OF CAPACITIVE REACTANCE AND INDUCTIVE REACTANCE (XC and XC)
Teacher calculates capacitive reactance and inductive reactance.
Students calculate Xc and XL in a circuit, e.g calculate XL in a circuit of frequency of 50HZ and inductance of 20H. Calculate XC in a circuit of frequency 10HZ and Intructional Materials; Capacitance of 100MF. Circuit Intructional Materials; Diagrams.
4
ALTERNATING CURRENT.
Concept of resonance frequency, series and parallel resonance.
Teacher explains resonance frequency, series and parallel resonance. Circuit diagrams. Students explain series and parallel Intructional Materials; Resonance.
5
ALTERNATING CURRENT
Calculation of series and parallel resonance.
Teacher calculates series and parallel resonance students. Calculate series and parallel resonance.
Teacher explains the advantages and disadvantages of power factor correction.
Students state the advantages and disadvantages of power factor correction.
Intructional Materials; Chart on power triangle and power factor.
Teacher calculates power factor.
Students calculate power factor.
8
POWER IN AC CIRCUITS
Q factor and bandwidth.
Teacher explains Q-factor and bandwidth (FH and FL).
Students explain Q-factor and bandwidth.
Intructional Materials; Calculator, power triangle circuit diagram.
9
TRANSISTORS
Concept of transistors.
Biasing of transistors.
Teacher explains the concept of transistors. Leads discussion on biasing of a transistor. Students explain the concept of transistors, draw the transistor symbols. Explain biasing arrangement, draw transistor biasing arrangements. Transistors e.g bipolar, FET, JFET, MOSFET etc. charts showing pictures of transistors, it symbols.
10
TRANSISTORS
TYPES OF TRANSISTORS
Bipolar (NPN and PNP) transistor.
Field effect transistor (FET)
(N-channel and P-channel).
MOSFET transistors, meaning and symbols.
Teacher discusses basic bipolar transistor circuits. Explains types of transistors and symbols.
Students draw and explain common emitter collector and base circuits. State types of transistors and symbols.
Intructional Materials; Chart on types of transistors, biasing arrangements and bipolar transistor circuits.
11
TRANSISTORS
APPLICATION OF TRANSISTORS,
(e.g- amplifiers, switches, etc).
Teacher states the application of transistors.
Students state the application of transistors charts on areas of application of transistors.
12
Revision
Revision
13
Examination
Examination
14
Examination
Examination
BASIC ELECTRONICS
SS2 2ND TERM
WEEK
TOPIC/CONTENT
ACTIVITIES
1
INTEGRATED CIRCUITS (IC) AND MICRO PROCESSORS.
Concept of integrated circuits (IC).
Advantages and disadvantages of IC.
Teacher explains the concept of integrated circuit. Discusses the advantages and disadvantages of IC. Students participate in class, define IC, state the active and passive components of IC.
ICs, microprocessors.
Intructional Materials; Charts on ICs and microprocessors.
2
INTEGRATED CIRCUITS (IC) AND MICRO-PROCESSORS.
Application of IC and microprocessors.
Teacher leads discussion on application of IC. Students state the application of IC.
Intructional Materials; Chart on areas of application of IC.
Teacher explains the following terms as related to micro-processor; RAM, ROM, EPROM. State application of micro-processor.
Students state the application of micro-processor, define; RAM, ROM AND EPROM as they relate to microprocessor.
Intructional Materials; Chart on micro-processors.
4
RECTIFICATION
REGULATION
Teacher explains rectification, guides discussion on the principle of operation of rectifier, half-ware, and full-ware rectifiers. Explains regulators and its functions.
Students explain the use of rectifier in power supply unit. State the difference between half-ware and full-ware rectifiers.
State the functions of voltage regulator in power supply unit.
Intructional Materials; Diodes, resistors, transistors, pictures of rectifiers and voltage regulators.
Students; draw the circuit diagrams of full-ware and half-ware rectifiers.
5
POWER SUPPLY UNIT
Types of voltage regulators.
Series voltage regulator.
Transistorized electric voltage regulator.
Teacher lists and explains the different types of voltage regulator.
State the difference between series voltage regulator and transistorized voltage regulator. Students listen attentively, and state the functions of a voltage regulator in a power supply unit.
Intructional Materials; Pictures of rectifiers and voltage regulators, transistorized electronic voltage regulator.
6
POWER SUPPLY UNIT
Operation of voltage regulators (series voltage regulators and transistorized electronic voltage regulator).
Teacher explains the principles of operation of a voltage regulator.
Students describe the operation of a voltage regulator. Demonstrate, constructing a full-ware rectifier circuit with a transistorized voltage regulator.
Teacher explains the meaning of transducers and sensors, and their types (acoustic and photo electric transducers)
(Proximity sensor). Demonstrate the uses of sensors.
a. Students participate in class discussion.
b. Observe teacher’s demonstration
c. Define transducers and sensors.
d. State types of transducers.
e. State types of sensors.
f. Explain uses of transducers and sensors.
Intructional Materials; Charts showing different types of transducers and sensors.
4
TRANSDUCERS AND SENSORS
Principles of operation of transducers and sensors.
Teacher describes the operation of a transducer, and the operation of a sensor.
Students participate in class discussion. Practice use of sensor as demonstrated by teacher.
Intructional Materials; Charts showing different types of transducers and sensors.
5
TRANSDUCERS AND SENSORS
Acoustic transducer.
Types of acoustic transducers, e.g loud-speaker, microphone, ear-phone.
Application of acoustic transducer.
Teacher explains the different types of acoustic transducers. Explains the application of acoustic transducers e.g tweeter, micro-phone, underwater speaker.
Students participate in class discussion, ask and answer questions, copy notes.
Intructional Materials; Loud-speakers, micro-phones, ear-phones, and charts showing acoustic transducers.
6
NUMBER SYSTEM
Identification and formation of different number systems e.g. binary, octal, hexadecimal
Teacher explains different number system.
Students participate in lessons, write sequentially in figure, different number system.
Intructional Materials; Logic modules
7
NUMBER SYSTEM
Simple calculation in binary number.
Conversion from one base to another, e.g. binary to octal or hexa to binary and vice versa.
Teacher demonstrates addition and subtraction in binary numbers. Converts from one number base to another.
Students practice addition and subtraction of number base, convert from one base to the other.
Intructional Materials; Logic modules, charts showing different number system.
8
LOGIC GATES
Concept of logic gates.
Types of logic gates, e.g. OR, NOR, AND, NAND, etc.
Teacher explains logic gates, leads students to identify different logic gates.
Students listen attentively, participate in class discussion,
Intructional Materials; Charts showing different logic gates.
9
LOGIC GATES
Construction of TRUTH tables (OR, NOR, AND, etc)
Teacher demonstrates the construction of truth table of the above logic gates.
Students construct TRUTH tables of OR, NOR, AND, and NAND.
Intructional Materials; Charts showing different TRUTH tables.
Intructional Materials; Charts showing different TRUTH tables.
11
Revision
Revision
12
Examination
Examination
AUTO MECHANICS WORK
SS 2 FIRST TERM
WEEK
TOPIC/CONTENT
ACTIVITIES
1
PETROL ENGINE – TWO STROKE CYCLE
Teacher define and explain two stroke cycle operation. Students examine the working sequence.
Resources; Live engine, i.e two stroke charts.
2
PETROL ENGINE – FOUR STROKE CYCLE.
Teacher explain and illustrate four stroke cycle engine. Students observe the working operation of four stroke.
Resources; Live engine, charts, posters.
3
PETROL ENGINE – ADVANTAGES OF FOUR STROKE AND TWO STROKE
Teacher distinguish between two stroke and four stroke cycle engine. Students observe the differences between two stroke and four stroke engine.
Resources; Charts, posters on spark ignition engine (SIE)
4
DIESEL ENGINE—TWO STROKE CYCLE AND FOUR STROKE CYCLE.
Teacher explain and illustrate the principles of operation of two & four stroke cycle engines, emphasize on the difference between the two. Students observe the operational sequence of tow stroke & four stroke cycle. Distinguish between the layout and advantages.
Resources; Live engine of compression ignition engine (CIE). Two and four stroke.
5
COMPONENTS OF A TRANSMISSION UNIT (CLUTCH) – IDENTIFICATION OF PARTS AND CHARACTERISTICS OF CLUTCHES.
Teacher illustrate with sketches, types of transmission components, i.e pressure plate, disc, release bearing.
Students make sketches on types of clutches. Observe the operation. Resources; Gearbox, posters, charts.
6
COMPONENTS OF A TRANSMISSION UNIT (CLUTCH) CONSTRUCTION AND OPERATION OF A SINGLE PLATE CLUTCH.
Teacher list various parts in a transmission system. Students identify transmission components.
Resources; Live vehicle, clutch , gearbox, posters, charts.
7
COMPONENTS OF A TRANSMISSION UNIT (GEAR BOX)—OPERATION OF A SLIDING MESH GEARBOX AND REVERSE MECHANISM.
Teacher dismantle and identify parts of gearbox, illustrate and explain. Students observe the operation, and the dismantling.
Resources; Live vehicle, gearbox, posters, charts, etc
Teacher demonstrate the removal and replacement of suspension system. Students observe and demonstrate the removal and replacement of suspension system.
10
SUSPENSION SYSTEM—FAULT FINDING IN SUSPENSION SYSTEM
Teacher identify faulty areas. Students observe the fault finding. Resources; Charts, posters, leaf spring, and copulas spring
11
SUSPENSION SYSTEM—REPAIR OF SUSPENSION SYSTEM
Teacher repair faulty suspension system. Students observe the repair of the faulty side.
Resources; Coil spring, leaf spring.
12
SUSPENSION SYSTEM—ADVANTAGES OF SUSPENSION SYSTEM TYPES
Teacher demonstrates how the suspension system works. Students observe how the suspension system works.
