# EE6604 Design of Electrical Machines | Important Questions | Question bank | Syllabus | Model and Previous Question papers | Download PDF

## EE6604 Design of Electrical Machines

Subject Informations :

University        :   Anna University
Department     :   B.E. ELECTRICAL AND ELECTRONICS ENGINEERING
Semester          :   06 th sem
Year                  :   03 rd year
Regulation       :   R2013
Subject Code   :   EE6604
Subject Name  :   Design of Electrical Machines

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EE6604 Design of Electrical Machines | Important  Questions

### EE6604 DESIGN OF ELECTRICAL MACHINES – SYLLABUS – R- 2013

OBJECTIVES:

 To study mmf calculation and thermal rating of various types of electrical machines.
 To design armature and field systems for D.C. machines.
 To design core, yoke, windings and cooling systems of transformers.
 To design stator and rotor of induction machines.
 To design stator and rotor of synchronous machines and study their thermal behaviour.

UNIT I INTRODUCTION

Major considerations in Electrical Machine Design – Electrical Engineering Materials – Space factor – Choice of Specific Electrical and Magnetic loadings – Thermal considerations – Heat flow – Temperature rise and Insulating Materials – Rating of machines – Standard specifications.

UNIT II DC MACHINES

Output Equations – Main Dimensions – Choice of Specific Electric and Magnetic Loading – Maganetic Circuits Calculations – Carter’s Coefficient – Net length of Iron –Real & Apparent flux densities – Selection of number of poles – Design of Armature – Design of commutator and brushes –
performance prediction using design values.

UNIT III TRANSFORMERS

Output Equations – Main Dimensions – kVA output for single and three phase transformers – Window space factor – Design of core and winding – Overall dimensions – Operating characteristics – No load current – Temperature rise in Transformers – Design of Tank – Methods of cooling of Transformers.

UNIT IV INDUCTION MOTORS

Output equation of Induction motor – Main dimensions – Choice of Average flux density – Length of
air gap- Rules for selecting rotor slots of squirrel cage machines – Design of rotor bars & slots – Design of end rings – Design of wound rotor – Magnetic leakage calculations – Leakage reactance of
polyphase machines- Magnetizing current – Short circuit current – Operating characteristics- Losses
and Efficiency.

UNIT V SYNCHRONOUS MACHINES

Output equations – choice of Electrical and Magnetic Loading – Design of salient pole machines – Short circuit ratio – shape of pole face – Armature design – Armature parameters – Estimation of air

gap length – Design of rotor –Design of damper winding – Determination of full load field mmf – Design of field winding – Design of turbo alternators – Rotor design.

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