Basic Electrical Engineering (KIIT)

Introduction
Electrical Energy Scenario in India, power system layout, Comparison: overhead transmission lines and underground cable; generating stations (Thermal, Hydro, Nuclear and Solar PV Stations), AC and DC distribution System; Safety measures in electrical system) Components of LT Switchgear: Switch Fuse Unit (SFU), MCB, ELCB, MCCB, Types of Wiring, Types of Batteries, necessity of earthing and fuse. IE Rules for Domestic wiring.

DC Circuits
Basic terminology- circuit, network, mesh, loop, node, junction, active network, passive network, lumped network, distributed network, bilateral element and unilateral element, linear and non linear network, Kirchhoff’s law, star-delta transformation, mesh analysis, nodal analysis, Superposition theorem, Thevenin’s Theorem, Norton’s Theorem, DC transients (RL, RC series circuits). Problems on DC Circuits and DC transients.

AC circuits
Basic terminology-Amplitude, time period, frequency, phase, phase difference, average value, R.M.S value, form factor, peak factor, phasor representation of alternating quantities, Phasor Algebra, AC Series circuit, Resonance in AC series Circuit, Three phase AC circuits- voltage and current relations in star and delta connections, Measurement of power and power factor by two-wattmeter method. Problems on AC Circuit.

Magnetic circuits
Basic terminology-magnetizing force, reluctance, Permeance, magnetic field, magnetic permeability, analogy between electric circuit and magnetic circuits, analysis of series magnetic circuit, B-H curve, hysteresis and eddy current loss, leakage flux, Faraday’s laws of electromagnetic induction, self and mutual inductance. Problems on Magnetic circuit.

Transformer and Induction Motors
Single Phase transformer: principle, construction, Uses, E.M.F equation, Auto transformer, Three Phase Induction Motor: Principle, types and uses and Torque-Slip characteristics, Single Phase Induction Motor: Working Principle, Types and applications.

Measuring Instruments and Illumination
Principle and construction of Moving coil instruments, Extension of range; Moving iron instruments, Dynamometer Watt meter, 1-Phase induction type energy meter, Basic terminology-Luminous flux, luminous intensity, lumen, candela power, brightness; Different lamps: Fluorescent Lamp, Compact Florescent Light (CFL), Light Emitting Diode (LED). Problems on Extension of range.

Why 3-phase, why not 4-ph, 5ph, 6ph

Easy way to draw the 3-phase waveform

Why Sinusoid and what is sinusoid

Easy way to write KVL equation

Proper understanding of Series and Shunt

Star to Delta Conversion Pro-tip to remember the formula

Secret behind the name star connection

Fundamentals of AC circuits

What is root mean square (rms) value

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