Unit II

Topics

• Generation of sinusoidal AC voltage →
• Concept of phasor and Power factor →
• Concept of impedance and admittance →
• Necessity and advantages of three phase systems →
• Meaning of Phase sequence →
• Balanced and unbalanced supply and loads →
• Relationship between line and phase values →
• Power in balanced & unbalanced three-phase system and measurements →
• Average value →
• R.M.S. value →
• form factor and peak factor →
• Active →
• reactive and apparent power →
• Analysis of R-L →
• R-C →
• R-L-C series & parallel circuit →