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SYLLABUS
UNIT-I
D.C Circuits Electrical circuit elements (R,L and C), Voltage and current sources, KVL & KCL, Analysis of simple circuits with D.C excitation. Superposition, Thevenin and Norton theorems. Time-domain analysis of first-order RL and RC circuits.
UNIT-II
A.C Circuits Representation of sinusoidal waveforms, Peak and rms values, Phasor representation, Real power, Reactive power, Apparent power, Power factor, Analysis of single-phase A.C circuits consisting of R, L, C, RL, RC, RLC combinations (series and parallel), Resonance in series R-L-C circuit. Three-phase balanced circuits, Voltage and current relations in star and delta connections.
UNIT-III
Transformers Ideal and practical transformer, Equivalent circuit, Losses in transformers, Regulation and efficiency. Autotransformer and three-phase transformer connections.
UNIT-IV
Electrical Machines Generation of rotating magnetic fields, Construction and working of a three-phase induction motor, Significance of torque-slip characteristic. Loss components and efficiency, Starting and speed control of induction motor. Single-phase induction motor, Construction, Working, Torque-speed characteristics and speed control of separately excited D.C motor. Construction and working of synchronous generators.
UNIT-V
Electrical Installations Components of LT switchgear: Switch Fuse Unit (SFU), MCB, ELCB, MCCB, Types of wires and cables, Earthing, Types of batteries, Important characteristics for batteries. Elementary calculations for energy consumption, Power factor improvement and battery backup.
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CategoriesEngineering
Format EPUB
TypeeBook