UNIT I BASIC CIRCUITS ANALYSIS Period
Resistive elements – Ohm’s Law – Kirchhoff’s laws – Resistors in series parallel
circuits – Source transformation – Star/delta and delta/star transformation – Mesh
Analysis – Node Analysis – Problems on all the above topics.

UNIT II NETWORK THEOREMS Period
Superposition Theorem – Thevenin’s Theorem – Norton’s Theorem – Maximum Power
Transfer Theorem – Problems on all the above topics.

UNIT III SINGLE PHASE A.C SERIES CIRCUITS Period
Sinusoidal voltage and current – Instantaneous, peak, average and effective values
– Form Factor – Peak factor – Pure resistive, inductive and capacitive circuits – RL,
RC, and RLC series circuits – Impedance – Phase angle – Phasor diagram – Power
and Power factor – Power triangle – Apparent power – Active Power – Reactive
power – Problems using RL, RC, and RLC series circuits.

UNIT IV SINGLE PHASE A.C PARALLEL CIRCUITS & RESONANCE Period
J Notations – Rectangular and polar coordinates – Parallel circuits (two branches
only) – Conductance – Susceptance – Admittance – Problems using two branch
parallel circuits.
Series Resonance: Effects of varying inductance and capacitance in series RLC
circuit – Selectivity – ‘Q’ factor – Resonance Frequency – Bandwidth – Half power
frequencies- Problems on all the above topics.
Parallel Resonance : Two branch parallel circuits, Q Factor – Resonance Frequency
– Band width – problems on all the above topics.

UNIT V THREE PHASE CIRCUITS Period
Significance of 3 phase circuits – Star, Delta connections – Phase sequence –
Balanced load – Relation between voltages, currents of line and phase values in star
and delta connection – Problems in balanced loads of star and delta connections –
Measurement of 3 phase power using two wattmeter method (Derivation and
Problems) – Star and Delta connected unbalanced loads (No problems) –
Symmetrical components (No problems).