final study guide

final study guide - EE 4420 Topics for Final Exam...

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EE 4420 Topics for Final Exam Transformers 1. Single-phase transformer: equivalent circuit, no-load and short circuit tests, determination of equivalent circuit parameters, simplified equivalent circuit and phasor diagrams for inductive and capacitive load, on-load (V 2 -I 2 ) characteristics, voltage regulation, efficiency (equation, condition for maximum efficiency) 2. Three-phase transformer: construction, type of connections of 3-phase winding, 3. Autotransformer: circuit diagram, 2 ways of power transmission, relations between powers transmitted by induction and by conduction. 4. Instrumentation transformers: voltage and current transformers; consequences if the instrumentation transformers are shorted or open when their primary circuits are connected to the power line. Generation of rotating magnetic field 1. Condition for generation of rotating magnetic fields: elliptic and circular. 2.
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final study guide - EE 4420 Topics for Final Exam...

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