alleryStart learning →In a 3-phase transmission line, line voltage rms is 415 V. Phase voltage (Y/star) is:
A415 × √3
B415 V
C415/3
D415/√3 ≈ 240 V
Answer & Solution
Correct answer: D. 415/√3 ≈ 240 V
V_LL = √3 × V_ph (Y).
415/√3 = 240 V (phase to neutral).
**Indian LT supply:** 415 V line-to-line 3-phase, 240 V phase-to-neutral.
Single-phase appliances use 240 V (phase-neutral)
industrial 3-phase motors use 415 V (line-line).
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