Construction of DC machines – Theory of operation of DC generators – Characteristics of DC generators- Operating principle of DC motors – Types of DC motors and their characteristics – Speed control of DC motors- Applications
Introduction – Single phase transformer construction and principle of operation – Types of Transformers - EMF equation of transformer– Phasor diagram - OC and SC test– Regulation of transformer –kVA rating- Transformer losses and efficiency.
Single phase induction motor - Construction –Principle of Operation– Types - Three phase induction motor – Construction – Principle of operation – Types –Starting Methods - Principles of alternator – Equation of induced EMF – Voltage regulation - Synchronous motor: Principle and operation
Classification of instruments - operating principles - Errors in Measurement - Moving coil permanent magnet (PMMC) instruments - Moving Iron of Ammeters – Classification of Transducers - Variable resistive – Variable Capacitive - Variable Inductive transducer
Applications of DC Motors: Electric Vehicle – Electric Traction – Vacuum Cleaner – Hair Dryer: Applications of Induction Motor: Domestic Applications – Air condition/heating systems -Manufacturing Plants, Pumps in sewage and irrigation. Case Study/ Mini Project: Hair Dryer / Home UPS Calculation / Project based on DC motor / Stepper motor.
Reference Book:
1. Del Toro, “Electrical Engineering Fundamentals” Pearson Education, New Delhi,2007. 2. W.D.Cooper&A.D.Helfrick, “Modern Electronic Instrumentation and Measurement Techniques”, 5thEdition, PHI, 2002. 3. John Bird, “Electrical Circuit Theory and Technology”, Elsevier, First IndianEdition, 2006. 4. Thereja .B.L, “Fundamentals of Electrical Engineering and Electronics”, S Chand& Co Ltd, 2008.
Text Book:
1. I.J Nagarath and Kothari DP, “Electrical Machines”, McGraw-Hill Education (India) Pvt Ltd ,4th Edition,2010[Unit I-III,V]. 2. A.K.Sawhney, “A Course in Electrical & Electronic Measurements and Instrumentation”, DhanpatRai and Co, 2004.[Unit IV].
