Draw the per phase equivalent circuit

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Reference no: EM132914645

BEKG2433 Electrical System

QUESTION 1

a) Based on circuit shown in Figure Q2, if ERN = 240∠0° (assumed positive sequence), determine

i. All phase voltages in term of magnitude and angle at the source terminals.
ii. Draw the per phase equivalent circuit
iii. All line currents flowing through the line impedance
iv. All phase voltages in term of magnitude and angle at the load terminals.
v. All line voltages in term of magnitude and angle at the load terminals.
vi. Single and three phase active, reactive and apparent power at load

Figure Q2: Star - Star connection circuit for three phase system

a) Based on circuit shown in Figure Q2, if Vry = 240∠0° (assumed positive sequence), determine
i. All the phase currents
ii. All the line currents
iii. Three phase active, reactive and apparent power at load

Figure Q2: Three phase balance system; Delta connected load

a) Based on circuit shown in Figure Q1, the star connected three phase supply is connected to a balanced delta connected loads. Given EAB = 415V . Assume assume positive sequence, determine:
vii. magnitude and angle of all phase voltages referred to the source terminals.
viii. magnitude and angle of all line currents flowing through the line impedances (Zline).
ix. magnitude and angle of all phase currents flowing through the load impedances.
x. draw the phasor diagram showing the line and phase current relationship
xi. magnitude and angle of all line voltages at each load.
xii. total apparent power, active power and the reactive power at the loads

Figure Q3: Star - Delta connection circuit for three phase system

Reference no: EM132914645

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