Basic Electrical Engineering Notes | Unit 1 – 5

Examination Scheme for BEE SPPU 2024 Pattern

• Seminar Presentation / Open Book Test/ Quiz (06 Marks Unit 5)
• Unit Test 12 Marks Units 1 & Unit 2 (6 Marks/Unit)
• Assignments / Case Study 12 Marks Units 3 & Unit 4 (6 Marks/Unit)

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Syllabus

Unit I: Elementary Concepts and DC Circuits

Elementary Concepts

• Topics Covered:
  • Resistance, EMF, Current, Potential Difference, Ohm’s Law.
  • Overview of an elementary power system, including:
    • Generation
    • Transmission
    • Distribution of electrical energy.

DC Circuits

• Topics Covered:
  • Classification of electrical networks.
  • Network simplifications using:
    • Series-parallel combinations.
    • Star-delta transformation technique.
  • Kirchhoff’s Laws and applications for network solutions (loop analysis).
  • Superposition theorem.

Exemplar Applications:

• Electric power system, Electrical Load Distribution box, Robotics.

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Unit II: Electromagnetism

Magnetic Circuit

• Topics Covered:
  • Concept of flux density, field strength, permeability, MMF, and reluctance.
  • Units and relationships of the above concepts.
  • Simple series magnetic circuit.
  • Comparison of electric and magnetic circuits.

Electromagnetic Induction

• Topics Covered:
  • Faraday’s Laws of Electromagnetic Induction.
  • Fleming’s Right-hand Rule.
  • Statically and dynamically induced EMF.
  • Self and mutual inductance, coefficient of coupling.
  • Energy stored in a magnetic field.

Exemplar Applications:

• Loudspeaker, Motor, Generator, Transformer.

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Unit III: AC Fundamentals

Topics Covered

• Generation of single-phase sinusoidal voltages and currents:
  • Mathematical and graphical representation.
• Fundamental concepts:
  • Cycle, Period, Frequency, Instantaneous, Peak, Average, and RMS values.
  • Peak factor and Form factor.
• Phase concepts:
  • Phase, Phase difference, Lagging/Leading quantities, and their phasor representation.
• Representation of phasors:
  • Rectangular and Polar forms.
• Study of AC circuits with:
  • Pure resistance.
  • Pure inductance.
  • Pure capacitance.

Exemplar Applications:

• Generator, Electrical appliances, Electrical heater, Radio circuits, Capacitor.

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Unit IV: AC Circuits

Single Phase AC Circuits

• Topics Covered:
  • R-L, R-C, and R-L-C series circuits:
    • Concept of impedance, power factor, and phasor diagrams.
    • Voltage, current, and power waveforms.
  • Power concepts:
    • Active power.
    • Reactive power.
    • Apparent power.
  • Resonance in RLC series circuits.

Three Phase AC Circuits

• Topics Covered:
  • Concept of a symmetrical three-phase AC system.
  • Phase sequence.
  • Balanced and unbalanced loads.
  • Voltage, current, and power relations in balanced star and delta connected loads.
  • Phasor diagrams.

Exemplar Applications:

• Machine windings, Electric power networks.

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Unit V: Introduction to Electric Machines

Single Phase Transformer

• Topics Covered:
  • Construction and working principle.
  • EMF equation and transformation ratio.
  • Transformer rating, types, losses, regulation, and efficiency under various loading conditions.

Electrical Motors

• Topics Covered:
  • D.C. Motors:
    • Construction, working principle, types, voltage equation, characteristics, and applications.
  • Three Phase Induction Motor:
    • Working principle (rotating magnetic field theory), types, and applications.
  • Single Phase Induction Motor:
    • Construction, working principle.
    • Applications of split phase, capacitor start, and capacitor run motors.

Exemplar Applications:

• Mobile charger, Electric substations, UPS, Lathe machine, Compressor, Lifts, Hoists, Ceiling fan.