1–a) D. C. Circuits: Ohm\'s Law and Kirchhoff’s Laws, analysis of series,parallel and series- parallel circuits excited by independent voltage sources.Power and Energy. Illustrative examples.I–b) Electromagnetism: Faradays Laws, Lenz\'s Law, Fleming\'s Rules,Statically and dynamically induced emf’s. Concept of self inductance, mutualinductance and coefficient of coupling. Energy stored in magnetic field.Illustrative examples.
Generation of sinusoidal voltage, definitionof average value, root mean square value, form factor and peak factor ofsinusoidally varying voltage and current, phasor representation of alternatingquantities. Analysis, with phasor diagrams, of R, L, C, R-L, R-C and R-L-Ccircuits, real power, reactive power, apparent power and power factor.Illustrative examples involving series, parallel and series- parallel circuits.
Necessity and advantages of three phase systems,generation of three phase power, definition of Phase sequence, balancedsupply and balanced load. Relationship between line and phase values ofbalanced star and delta connections. Power in balanced three-phase circuits,measurement of power by two-wattmeter method. Illustrative examples.
Measuring Instruments: Construction and Principle of operation ofdynamometer type wattmeter and single-phase induction type energy meter(problems excluded).Domestic Wiring: Service mains, meter board and distribution board.Brief discussion on Cleat, Casing & Capping and conduit (concealed) wiring.Two-way and three-way control of a lamp. Elementary discussion on fuseand Miniature Circuit Breaker (MCB’s). Electric shock, precautions againstshock –Earthing: Pipe and Plate.
Working principle of DC machine as a generator and amotor. Types and constructional features. emf equation of generator, relationbetween emf induced and terminal voltage enumerating the brush drop anddrop due to armature reaction. Illustrative examples.DC motor working principle, Back emf and its significance, torque equation.Types of D.C. motors, characteristics and applications. Necessity of a starterfor DC motor. Illustrative examples on back emf and torque.
Principle of operation and construction of single-phasetransformers (core and shell types). emf equation, losses, efficiency andvoltage regulation (Open Circuit and Short circuit tests, equivalent circuit andphasor diagrams are excluded). Illustrative problems on emf equation andefficiency only.
Principle of operation. Types and constructional features. emf equation. Concept of winding factor (excluding derivation of distribution and pitch factors). Illustrative examples on emf.equation.
Principle of operation. Types and constructional features. emf equation. Concept of winding factor (excluding derivation of distribution and pitch factors). Illustrative examples on emf.equation.