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EXPERIMENT 1 An open circuit and short circuit tests were performed on a single-phase transformer (100 VA, 230/15.6 V) and the following results were obtained. Open-circuit test results 110 130 150 170 | Voc(V) 50 70 90 190 210 230 250 loc (A) 0.014 0.015 0.017 0.020 0.023 0.029 0.038 0.054 0.075 0.103 0.136 Poc (W) 0 0 0 0 1 2 3 4 6 8 12 V2(V) 3.7 5.2 6.7 8.1 9.6 11.1 12.6 14.1 15.6 17.0 18.5 Short-circuit test results Vsc1.FL 21.6 V IsciFL 0.44 A SC1.FL 8 W Iscirl 5.9 A EXPERIMENT 2 Measurements were done on 3x single-phase transformers (100 VA, 230/15.6 V) connected as shown in the diagram below

EXPERIMENT 2 Measurements were done on 3x single-phase transformers (100 VA, 230/15.6 V) connected as shown in the diagram below Van Primary windings Ven Von Load Secondary windings And the results were obtained

Measured voltages across windings for a 50 W load VP_Line-Neutral (V) Vs_Line-Line (V) Phase A 227.8 16.5 Phase B 229.1 16.6 Phase C 230.1 16.4 Measured voltages across windings for No-load VP_Line-Neutral (V) Vs_Line-Line (V) Phase A 228.8 Phase B 229.7 Phase C 230.5 16.9 17 17 1.1. Determine the voltage regulation on all three transformers for the 50 W loads according to your measurements in experiment 2. 1.2. Calculate what the voltage regulation and efficiency should be from the values that was determined in experiment 1 for a 50 W load with unity power factor. 1.3. Compare the values in 1.1. and 1.2. and discuss. 1.4. For experiment 2 draw a phasor diagram of one phase under load with a unity power factor.