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MID-SEMESTER TEST ,  SYLLABUS for A C Machine Design(3170909)(7Th Semester- Electrical)

 

(1)Introduction

Major considerations in electrical machine design, Electrical engineering materials, Spacefactor, Choice of specific electrical and magnetic loadings, Thermal considerations, Heatflow, Temperature rise, Rating of machines.

  (2) Design of transformers

Sizing of a transformer, Main dimensions, kVA output for single- and three-phase transformers, Window space factor, Overall dimensions, Operating characteristics,voltage regulation

(3) Design of induction motors

Sizing of an induction motor, Main dimensions, Length of air gap, Rules for selecting rotorslots of squirrel cage machines, Design of rotor bars & slots, Design of end rings, Design of wound rotor, Magnetic leakage calculations, Leakage reactance of poly phase machines, Magnetizing current, Short circuit current,

(4) Design of synchronous machines

Sizing of a synchronous machine, Main dimensions, Design of salient pole machines, Short  circuit ratio and its significance, Shape of pole face, Armature design,  Armature parameters, Estimation of air gap length, Design of rotor, Design of damper winding,