3 PHASE CIRCUIT

Question 1

EXPLAIN BALANCED 3 PHASE VOLTAGES

Answer 1

1. THREE SINUSOIDAL VOLTAGES THAT HAVE IDENTICAL AMPLITUDE AND FREQUENCY
2. OUT OF PHASE BY EACH OTHER BY 120 DEGREES

Question 2

CONDITIONS FOR BALANCED 3 -PHASE CIRCUIT (Y-Y)

Answer 2

1. VOLTAGES SOURCE FORM A SET OF BALANCED THREE-PHASE VOLTAGES
2. IMPEDENCE FOR PHASE VOLTAGE IS THE SAME
3. IMPEDENCE FOR LINE CONDUCTOR IS THE SAME
4. IMPEDENCE OF EACH LOAD OF THE PHASE IS THE SAME