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Unit-IV: (Polyphase A.C. Circuits and Single phase Transformers )
Unit-IV: (Polyphase A.C. Circuits and Single phase Transformers )
A) Polyphase A.C. Circuits: Concept of three-phase supply and phase sequence. Balanced and unbalanced load, Voltages, currents and power relations in three phase balanced star-connected loads and delta-connected loads along with phasor diagrams.
B) Single phase transformers: principle of working, construction and types, emf equation, voltage and current ratios. Losses, definition of regulation and efficiency, determination of these by direct loading method. Descriptive treatment of autotransformers. (3Hrs)
Single Phase Transformer.docxC-9-Three phase circuits [1-50].pdfNPTEL Notes on Three Phase AC Circuit
NPTEL Notes on Three Phase AC Circuit
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