11การหาพารามิเตอร์ของหม้อแปลง 1 เฟส Determination of transformer parameter by measurementOpen circuit testProvides magnetizing reactance and core loss resistanceObtain components are connected in parallelShort circuit testProvides combined leakage reactance and winding resistanceObtain components are connected in series
12Open circuit testEquivalent circuit for open circuit test, measurement at the primary side.Simplified equivalent circuit
13Short Circuit TestEquivalent circuit for short circuit test, measurement at the secondary sideSimplified equivalent circuit for short circuit test
24Three-phase Transformer Relations Transformer Connection Primary and Secondary Voltage Phase RelationPhase Shift*Windings Placed on the Same LegWye-WyeVAN is in phase with VanZeroA and aWye-DeltaVAN is in phase with Vab30°A and abDelta-WyeVAB is in phase with Van–30°AB and aDelta-DeltaVAB is in phase with VabAB and ab* Note: Phase shift lead between line-to-line voltages, VAB and Vab, and line-to-neutral voltages, VAN and Van, and line currents, IA and Ia.
27วัตถุประสงค์ The DC Series Motor and DC Shunt Motor The Construction of DC MachinesThe Classification according to form of excitationTorque and Speed EquationEfficiency
28วัตถุประสงค์ The DC Compound Motor The Classification according to form of excitationList the advantages of DC compound motor by using series field and shunt fieldTorque and Speed EquationEffieciency
45วัตถุประสงค์ The Three Phase Alternator - Explain the no load saturation curve of the alternator- Explain the short circuit characteristics of the alternator- Explain the open circuit characteristics of the alternator
54วัตถุประสงค์ The Synchronous Motor - The Construction and classification of three phase synchronous machines- Determine the starting characteristics of 3-phase synchronous motor- How can a synchronous motor act as variable inductance of capacitance- Explain the DC current vs Ac current characteristics curve for the synchronous motor