Mạch nhánh & Đi dâyCâu 232 / 521
In the voltage-drop formula for a balanced 3-phase circuit, which multiplier replaces the factor of 2 used in single-phase calculations?
a.2
b.1
c.3
d.1.732
Giải thích
Three-phase voltage drop uses 1.732 (the square root of 3) in place of the single-phase factor of 2. Using 2 would be the single-phase form, and 1 or 3 are incorrect multipliers.
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