Calculate the line-to-line voltage ratio for each of the three transformer connections.

3.3 Extended Star-Delta Connection Measurements Cases Using devices Parameters Case1 Case2 Case3 Case4 DM: Abbreviation of Digital Multimeter VRY(V) 78.70 78.68 78.65 78.70 Wat: Abbreviation of Wattmeter DM Vr1r2(V) 21.56 21.57 21.57 21.55 PT+DSO: Abbreviation of Potential transformer and Sigital Storage Oscilloscope VRN(V) 45.40 45.41 45.41 46.26 CT+DSO: Abbreviation of Current Tansformer and Digital Storage Oscilloscope IR(mA) 216 156 215 1900 Phase-shift(ms): Given the time difference(At) between the two signals, the phase-shift can be further calculated IY(mA) 203 237 204 1910 IN: Provide voltage value here. Remember the current transformer's transformation ratio is 1V=2A Wat IB(mA) 208 248 208 1940 Power losses(W) 2.94 3.46 2.96 19.50 VRY(V) 81.8 81.1 81.9 82.0 Vr1r2(V) 22.2 22.2 22.2 22.2 PT+DSO Phase-shift(ms) 1.76 1.60 1.76 1.52 VRN(V) 46.8 46.8 47.2 47.0 CT+DSO IN 0.00 71.2mV 0.00 2.55V Using the Digital Multimeter:- Primary Line Voltage "VRY" Secondary No. 2 Line Voltage ("Vry" for Star-Star ; "Vrlr2" for Star-Delta) Primary Phase Voltage "VRN" Secondary No. 2 Phase Voltage "Vm" (not applicable for Star-Delta) Using the Wattmeter:- Primary Line Current "IR" Primary Line Current "Iy" Primary Line Current "IB" Total Power consumed (i.e. Power Losses) Using the Potential Transformer and Digital Storage Oscilloscope:- Primary Line Voltage "Vry" Secondary No. 2 Line Voltage ("Vry" for Star-Star ; "Vrlr2" for Star-Delta) Phase-shift of Transformer ("Vry" to Sec2 "Vry" for Star-Star ; "VRY" to Sec2 "Vrlr2" for Star-Delta) Primary Phase Voltage "VRN" Secondary No. 2 Phase Voltage "Vm" (Not applicable for Star-Delta) 3.3 Extended Star-Delta Connection Measurements Cases Using devices Parameters Case1 Case2 Case3 Case4 DM: Abbreviation of Digital Multimeter VRY(V) 78.70 78.68 78.65 78.70 Wat: Abbreviation of Wattmeter DM Vr1r2(V) 21.56 21.57 21.57 21.55 PT+DSO: Abbreviation of Potential transformer and Sigital Storage Oscilloscope VRN(V) 45.40 45.41 45.41 46.26 CT+DSO: Abbreviation of Current Tansformer and Digital Storage Oscilloscope IR(mA) 216 156 215 1900 Phase-shift(ms): Given the time difference(At) between the two signals, the phase-shift can be further calculated IY(mA) 203 237 204 1910 IN: Provide voltage value here. Remember the current transformer's transformation ratio is 1V=2A Wat IB(mA) 208 248 208 1940 Power losses(W) 2.94 3.46 2.96 19.50 VRY(V) 81.8 81.1 81.9 82.0 Vr1r2(V) 22.2 22.2 22.2 22.2 PT+DSO Phase-shift(ms) 1.76 1.60 1.76 1.52 VRN(V) 46.8 46.8 47.2 47.0 CT+DSO IN 0.00 71.2mV 0.00 2.55V Using the Digital Multimeter:- Primary Line Voltage "VRY" Secondary No. 2 Line Voltage ("Vry" for Star-Star ; "Vrlr2" for Star-Delta) Primary Phase Voltage "VRN" Secondary No. 2 Phase Voltage "Vm" (not applicable for Star-Delta) Using the Wattmeter:- Primary Line Current "IR" Primary Line Current "Iy" Primary Line Current "IB" Total Power consumed (i.e. Power Losses) Using the Potential Transformer and Digital Storage Oscilloscope:- Primary Line Voltage "Vry" Secondary No. 2 Line Voltage ("Vry" for Star-Star ; "Vrlr2" for Star-Delta) Phase-shift of Transformer ("Vry" to Sec2 "Vry" for Star-Star ; "VRY" to Sec2 "Vrlr2" for Star-Delta) Primary Phase Voltage "VRN" Secondary No. 2 Phase Voltage "Vm" (Not applicable for Star-Delta)