Answer / mojinkoshy

The HT/EHT/MV voltages are mentioned as the multipliers of form factor ie. (3.14/2 root 2) = 1.1

Answer / k.prakashchandra

I had given answer to this long back.In the question
voltages are not correctly mentioned as V and KV.The first
electrical appliance was 100 V DC bulb.When AC system was
introduced ,the same bulb was used for 110 V AC applying the
form factor to make it equivalent.Then 11/33/ etc KV
systems came into being just have simple voltage ratio for
transformers.However we have 400 KV instead of 440 KV.

Answer / k.prakashchandra

220 is the root cause for others

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