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BASIC ELECTRONICS

SS 2 FIRST TERM
 WEEK TOPIC/CONTENT ACTIVITIES 1 ALTERNATING CURRENT Concept of capacitive, reactance, inductive reactance and impedance. Teacher explains the concept of capacitive reactance, inductive reactance, and impedance. Students participate in class. Define the following terms; capacitive reactance, inductive reactance and impedance. Calculator resistors, inductors, Intructional Materials; capacitors, A.C source. 2 ALTERNATING CURRENT. RL, RC, circuits. Symbols units, Abbreviations. 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. Intructional Materials; Calculator, circuit diagrams. 6 POWER IN AC CIRCUIT. Power and power triangle. Power factor and its correction. Teacher explains power triangle, power factor and power factor correction. Students participate in class, explain power and power factor in AC circuits. Intructional Materials;Charts on power triangle. 7 POWER IN AC CIRCUITS Advantages and disadvantages. Power factor correction. Calculation of power factor. 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

SS 2 2ND TERM

BASIC ELECTRONICS

SS 2 THIRD TERM
 WEEK TOPIC/CONTENT ACTIVITIES 1 MEASURING INSTRUMENTS Concept of measuring instruments. Classification of measuring instrument (analogue and digital). Teacher explains the concept of measuring instruments. Explain the terms analogue and digital measuring instrument. Students listen to teacher’s explanations, participate in discussion. Define measuring instrument. Differentiate between analogue and digital. Intructional Materials; Various measuring instruments both analogue and digital. 2 MEASURING INSTRUMENTS Types and uses of measuring instruments (multimeter, voltmeter, ammeter, oscilloscope, ohmmeter, wattmeter etc) Teacher demonstrates using measuring instruments to measure electric quantities; Multimeter, voltmeter, ohmmeter, ammeter, wattmeter, oscilloscope etc. Explains the uses of measuring instruments. Students use measuring instruments to measure electronic quantities; various measuring instruments. Intructional Materials; Charts showing measuring instruments, circuit boards. 3 TRANSDUCERS AND SENSORS Transducers Sensors Types and uses of transducers Types and uses of sensors. 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. 10 LOGIC GATES Construction of TRUTH table. (NOR, XOR, XNOR). Teacher demonstrates construction of NOR, XOR, XNOR, logic gates. 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 8 SUSPENSION SYSTEM—LEAF SPRING AND COIL SPRING Teacher assist in tracing faulty system. Students identify faulty suspension. Resources; Leaf spring, spring, hydraulic suspension, chart. 9 SUSPENSION SYSTEM—HYDRAULIC SUSPENSION SYSTEM. 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. Resources; Suspension system, charts, posters. 13 Revision Revision 14 Examination Examination