Ch.1 GENERAL DESIGN ASPECTS:
Specific electric loading and Specific magnetic loading; Output coefficient; Output equations for transformers and rotating machines; Factors affecting size of machines; Criteria for selection of specific loadings; Heating and Cooling of Transformers and rotating machines.
Ch 2 DESIGN OF THREE PHASE TRANSFORMER:
Types of transformers; Position of HV and LV windings and its importance; Relation between core and yoke cross section area and its significance; Different types of transformer windings; Different positions of taping; Window space factor; Factors affecting window space factor; Relation between emf per turn and transformer rating; Stacking factor.
MAIN DIMENSIONS: Design of window dimensions, yoke dimensions and overall core dimensions; Numerical examples.
DESIGN OF WINDINGS: Design of HVand LV windings (No. of turns and area of cross section); Selection of type of winding.
PERFORMANCE PARAMETERS ESTIMATION: Primary and secondary winding resistance and Leakage reactance calculation; Calculation of no load current, losses and temperature rise of transformer; Design of tank with tubes; Calculation of dimension of tank; Numerical examples. Variation of output and losses in transformer with linear dimensions
Ch. 3 DESIGN OF DC MACHINES:
Introduction; Output equation; MMF calculation; Selection of number of poles; Design of core length and armature diameter; Carter’s fringing curves and its significance; Design of length of air gap; Numerical examples.
ARMATURE DESIGN: Choice of armature winding; Armature conductor; Number of armature slots; Slot dimensions; Slot loading; Design of armature core; Numerical examples.
Also refer GTU question papers of sub. code:170902 dated: 7/12/15, 8/5/15, 2/12/14 etc.
Prof. K.S.Shah
Specific electric loading and Specific magnetic loading; Output coefficient; Output equations for transformers and rotating machines; Factors affecting size of machines; Criteria for selection of specific loadings; Heating and Cooling of Transformers and rotating machines.
Ch 2 DESIGN OF THREE PHASE TRANSFORMER:
Types of transformers; Position of HV and LV windings and its importance; Relation between core and yoke cross section area and its significance; Different types of transformer windings; Different positions of taping; Window space factor; Factors affecting window space factor; Relation between emf per turn and transformer rating; Stacking factor.
MAIN DIMENSIONS: Design of window dimensions, yoke dimensions and overall core dimensions; Numerical examples.
DESIGN OF WINDINGS: Design of HVand LV windings (No. of turns and area of cross section); Selection of type of winding.
PERFORMANCE PARAMETERS ESTIMATION: Primary and secondary winding resistance and Leakage reactance calculation; Calculation of no load current, losses and temperature rise of transformer; Design of tank with tubes; Calculation of dimension of tank; Numerical examples. Variation of output and losses in transformer with linear dimensions
Ch. 3 DESIGN OF DC MACHINES:
Introduction; Output equation; MMF calculation; Selection of number of poles; Design of core length and armature diameter; Carter’s fringing curves and its significance; Design of length of air gap; Numerical examples.
ARMATURE DESIGN: Choice of armature winding; Armature conductor; Number of armature slots; Slot dimensions; Slot loading; Design of armature core; Numerical examples.
Also refer GTU question papers of sub. code:170902 dated: 7/12/15, 8/5/15, 2/12/14 etc.
Prof. K.S.Shah
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