Experiments
1 Open Circuit and Short circuit tests on single phase step up or step down transformer and predetermination of (i) Efficiency and regulation (ii) Calculation of parameters of equivalent circuit.
2 Sumpner’s test on similar transformers and determination of combined and individual transformer efficiency.
3 Parallel operation of two dissimilar single-phase transformers of different kVA and determination of load sharing and analytical verification given the Short circuit test data.
4 Polarity test and connection of 3 single-phase transformers in star – delta and determination of efficiency and regulation under balanced resistive load.
5 Comparison of performance of 3 single-phase transformers in delta – delta and V – V (open delta) connection under load.
6 Scott connection with balanced and unbalanced loads.
7 Separation of hysteresis and eddy current losses in single phase transformer. 8 Voltage regulation of an alternator by EMF and MMF methods.
9 Voltage regulation of an alternator by ZPF method.
10 Slip test – Measurement of direct and quadrature axis reactance and predetermination of regulation of salient pole synchronous machines.
11 Performance of synchronous generator connected to infinite bus, under constant power and variable excitation & vice - versa.
12 Power angle curve of synchronous generator.