Basic Electrical Engineering- 3110005 BE01000051

Subtopic	Key Concepts	Video Focus Areas
1.1	Electrical Circuit Elements	Resistor (R), Inductor (L), Capacitor (C) - Symbols, V-I relationships, Energy storage elements
1.2	Voltage & Current Sources	Independent sources, Ideal vs Practical voltage/current sources, Source transformation
1.3	Kirchhoff's Laws	KCL (Kirchhoff's Current Law), KVL (Kirchhoff's Voltage Law), Sign conventions, Node and Loop analysis
1.4	Circuit Analysis with DC Excitation	Series and Parallel circuits, Voltage/Current divider rules, Mesh analysis, Nodal analysis
1.5	Superposition Theorem	Statement, Procedure, Applications, Limitations, Problems
1.6	Thevenin's Theorem	Statement, Procedure, Thevenin's equivalent circuit, Problems
1.7	Norton's Theorem	Statement, Procedure, Norton's equivalent circuit, Relation with Thevenin
1.8	Star-Delta / Delta-Star Conversion	Transformation formulae, Equivalent resistance calculations, Applications
1.9	Time-Domain Analysis	First-order RL circuits, First-order RC circuits, Transient response, Time constant (τ)

UNIT 2: AC CIRCUITS

Subtopic	Key Concepts	Video Focus Areas
2.1	Sinusoidal Waveforms	Representation, Characteristics (Amplitude, Frequency, Time period, Phase)
2.2	Peak, RMS & Average Values	Definition, Formulae for sine wave, Form factor, Peak factor
2.3	Phasor Representation	Phasor diagrams, Complex representation (Polar & Rectangular forms)
2.4	AC Circuit Analysis - Purely R	Voltage-current relationship, Phasor diagram, Power in resistive circuit
2.5	AC Circuit Analysis - Purely L	Inductive reactance (X_L), Voltage-current relationship, Phasor diagram
2.6	AC Circuit Analysis - Purely C	Capacitive reactance (X_C), Voltage-current relationship, Phasor diagram
2.7	RL Series Circuit	Impedance, Voltage triangle, Phase angle, Power factor
2.8	RC Series Circuit	Impedance, Voltage triangle, Phase angle, Power factor
2.9	RLC Series Circuit	Impedance, Resonance condition, Quality factor, Bandwidth
2.10	Parallel RLC Circuit	Admittance, Resonance, Current relationships
2.11	Series & Parallel Resonance	Resonant frequency, Half-power frequencies, Selectivity, Q-factor
2.12	Power in AC Circuits	Real power (P), Reactive power (Q), Apparent power (S), Power triangle, Power factor
2.13	Three-Phase Circuits	Generation of 3-phase supply, Balanced circuits, Phase sequence
2.14	Star (Y) Connection	Line & Phase voltages/currents relations, V_L = √3 V_Ph, I_L = I_Ph
2.15	Delta (Δ) Connection	Line & Phase voltages/currents relations, V_L = V_Ph, I_L = √3 I_Ph
2.16	Power Measurement	Two-wattmeter method, Three-phase power calculation

UNIT 3: MAGNETIC CIRCUITS & TRANSFORMERS

Subtopic	Key Concepts	Video Focus Areas
3.1	Magnetic Effect of Current	Cross and dot convention, Right-hand thumb rule, Cork screw rule
3.2	Magnetic Quantities	MMF (Magnetomotive Force), Flux (Φ), Flux density (B), Reluctance (S), Permeability (μ), Field strength (H)
3.3	Analogy: Electric vs Magnetic Circuits	Comparison table, Ohm's law for magnetic circuits
3.4	Magnetic Circuits	Series and parallel magnetic circuits, Composite magnetic circuits
3.5	B-H Curve	Magnetization curve, Permeability variation, Saturation
3.6	Hysteresis Loop	Hysteresis loss, Loop area significance, Factors affecting
3.7	Hysteresis & Eddy Current Losses	Steinmetz formula, Eddy current loss, Methods to reduce losses (laminations)
3.8	Single-Phase Transformer - Construction	Core type vs Shell type, Components (Core, Windings, Insulation, Tank)
3.9	Working Principle	Faraday's law, EMF equation, Transformation ratio
3.10	Voltage & Current Ratios	Turns ratio, Step-up/Step-down operation
3.11	Ideal Transformer	Assumptions, No-load condition, Phasor diagram
3.12	Practical Transformer	Equivalent circuit, Leakage reactance, Resistance, Magnetizing reactance
3.13	Transformer Losses	Copper loss (I²R), Iron loss (Hysteresis + Eddy current), Core loss
3.14	Efficiency & Regulation	Definition, Formula, Condition for maximum efficiency, Voltage regulation

UNIT 4: FUNDAMENTALS OF ELECTRICAL MACHINES

Subtopic	Key Concepts	Video Focus Areas
4.1	Generation of Rotating Magnetic Field	Concept of rotating magnetic field, Synchronous speed
4.2	Single-Phase Induction Motors	Introduction, Construction (Stator & Rotor)
4.3	Split-Phase Induction Motor	Working principle, Auxiliary winding, Applications (Pumps, Compressors)
4.4	Capacitor Start Motor	Working principle, Starting capacitor, Running capacitor, Applications
4.5	Permanent Split Capacitor (PSC) Motor	Working principle, Applications (Fans, Blowers)
4.6	Capacitor Start / Capacitor Run Motor	Working principle, Applications, Advantages
4.7	Applications of Single-Phase Motors	Pumps, Refrigerators, Fans, Compressors, Portable drills
4.8	Brushless DC Motor (BLDC)	Construction, Working principle, Electronic commutation
4.9	BLDC Applications	Electric Vehicles (EV), Washing machines, Blowers, Computers/Laptops
4.10	Comparison of Motor Types	Single-phase vs BLDC, Pros and cons

UNIT 5: ELECTRICAL WIRING, INSTALLATIONS & SAFETY

5.1 Low Voltage Switchgear

Subtopic	Key Concepts	Video Focus Areas
5.1.1	Switch Fuse Unit (SFU)	Construction, Working, Applications, Rating
5.1.2	MCB (Miniature Circuit Breaker)	Construction, Working principle, Trip characteristics (B, C, D curves), Ratings
5.1.3	ELCB (Earth Leakage Circuit Breaker)	Voltage-operated vs Current-operated, Working principle
5.1.4	MCCB (Moulded Case Circuit Breaker)	Construction, Working, Applications, Difference from MCB
5.1.5	Comparison: SFU vs MCB vs MCCB vs ELCB	Selection criteria based on application

5.2 Illumination & Lighting

Subtopic	Key Concepts	Video Focus Areas
5.2.1	Types of Lamps	Incandescent, CFL, LED, Fluorescent tubes, Halogen
5.2.2	Fixtures & Reflectors	Types, Light distribution, Efficiency
5.2.3	Illumination Schemes	Domestic, Industrial, Commercial premises, Lighting design basics
5.2.4	Lumen Requirements	Lumen per square meter for different applications

5.3 Earthing

Subtopic	Key Concepts	Video Focus Areas
5.3.1	Introduction to Earthing	Definition, Purpose, Importance for safety
5.3.2	Types of Earthing	Plate earthing, Pipe earthing, Rod earthing, Strip earthing
5.3.3	Earthing Methods	Equipment earthing, System earthing (Neutral earthing)
5.3.4	IS Standards for Earthing	Specifications, Testing, Maintenance

5.4 Batteries & Energy Consumption

Subtopic	Key Concepts	Video Focus Areas
5.4.1	Types of Batteries	Primary (Dry cell) vs Secondary (Lead-acid, Li-ion, Ni-Cd)
5.4.2	Battery Characteristics	Voltage, Storage capacity (Ah), Discharge curve, Cycle life
5.4.3	Energy Consumption Calculation	Power rating, Daily usage, Monthly consumption (kWh)
5.4.4	Electricity Bill Calculation	Tariff structure, Units consumed, Bill components

5.5 Electrical Measurements

Subtopic	Key Concepts	Video Focus Areas
5.5.1	Ammeter	Working principle, Types (Moving coil, Moving iron), Connection in circuit
5.5.2	Voltmeter	Working principle, Connection in circuit, Loading effect
5.5.3	Wattmeter	Electrodynamometer type, Connection diagram, Power measurement
5.5.4	Energy Meter	Induction type, Working principle, Connection diagram, Calibration
5.5.5	Safety Precautions	For electrical appliances, Measurements, Wiring installations

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