Monday, 26 October 2015

Study notes for EL 407 - Electrical Machine Design.

Study Material for EL 407   - Electrical Machine Design.


DC machine design: Main dimensions, output equation, choice of number of poles, choice of type of winding, design of commutator and brush gear, design of field poles and field winding's


Armature windings: Basic principles and classification of armature windings, single layer and double layer windings, simple and multiple windings. Different types of AC windings, commutator windings, AC winding factors. Armature reaction in AC machines, causes and elimination of harmonies. Skin effect and eddy current losses in armature conductors. Design of different types of motor starters, field regulators.

Transformer design: Single-phase and three-phase­ main dimensions, core and winding design, magnetizing current, losses, reactance of windings, tank design.

Induction motor design: Three-phase-main dimensions. Stator and rotor windings. Calculation of no load and pull out currents. Torque and speed calculations.

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Friday, 13 March 2015

Old Question papers - EL403-Power systems Winter 2010

Old Question papers - EL403-Power systems Winter 2010

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Old Question papers - EL403-Power systems Summer 2011

Old Question papers - EL403-Power systems Summer 2011

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Old Question papers - EL403-Power systems Winter 2009

Old Question papers - EL403-Power systems Winter 2009

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Old Question papers - EL403-Power systems Summer 2009

Old Question papers - EL403-Power systems Summer  2009

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Old Question papers - EL403-Power systems Winter 2008

Old Question papers - EL403-Power systems Winter  2008

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Old Question papers - EL403-Power systems Summer 2008

Old Question papers - EL403-Power systems Summer  2008

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