Q. The voltage between any two phases in the three phase system is:

A
1100V
B
220 V
C
110 V
D
400 V
Solution:

A three-phase system may be arranged in delta (?) or star (Y) . This system allows the use of two different voltages from all three phases, such as a 230/400 V system which provides 230 V between the neutral (centre hub) and any one of the phases, and 400 V across any two phases.

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