EE8002 Design of Electrical Apparatus (DEA)

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UNIT -1

1.Major considerations in Electrical Machine Design ** 2. Flux leakage ,Leakage in Armature. 3. Design of lap winding and wave winding** UNIT-2 1. Design of Tank and cooling tubes(2 SUms repeated one) 2. Complete Design of single phase core transformer 3.KVA output for single and three phase transformers,construction UNIT-3 1.Output Equation of DC machine 2. Choice of specific loadings,Selection of number of poles **

3.Design of Armature,commutator and brushes** problem based finding I,D,p,Va UNIT-4 1.O/p Eqn of IM**
2.Design of rotor& Ring squirrel cage **
3.Im,d,l,Z's,In,ae UNIT-5 1.Brushless DC 2.Design of salient pole machines

3.Determination of full load field MMF,Estimation of air gap length(problem may be asked on this topic).Ig,a,ATa**

3.Bav,ac

**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }

mostly asked from unit 4,5(OR) a Problem given

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SYllabuS

UNIT I DESIGN OF FIELD SYSTEM AND ARMATURE

Major considerations in Electrical Machine Design – Materials for Electrical apparatus – Design of Magnetic circuits – Magnetising current – Flux leakage – Leakage in Armature. Design of lap winding and wave winding.

UNIT II DESIGN OF TRANSFORMERS
Construction - KVA output for single and three phase transformers – Overall dimensions –
design of yoke, core and winding for core and shell type transformers – Estimation of No
load current – Temperature rise in Transformers – Design of Tank and cooling tubes of
Transformers. Computer program: Complete Design of single phase core transformer
UNIT III DESIGN OF DC MACHINES
Construction - Output Equations – Main Dimensions – Choice of specific loadings – Selection of number of poles – Design of Armature – Design of commutator and brushes –
design of field Computer program: Design of Armature main dimensions
UNIT IV DESIGN OF INDUCTION MOTORS Construction - Output equation of Induction motor – Main dimensions – choice of specific loadings – Design of squirrel cage rotor and wound rotor –Magnetic leakage calculations – Operating characteristics : Magnetizing current - Short circuit current – Circle diagram - Computer program: Design of slip-ring rotor
UNIT V DESIGN OF SYNCHRONOUS MACHINES
Output equations – choice of specific loadings – Design of salient pole machines – Short circuit ratio – Armature design – 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 -Computer program: Design of Stator main dimensions-Brushless DC
Machines

EE8002 Design of Electrical Apparatus (DEA)