Answer / allwyn

4.5m deep g.i pipe along with 30 kg charcoal and 15 kg salt

Answer / v.venkata ramana

required for dg set earth pits are 2 no,s of dg body, 2 no,s
of dg nutaral.
6 meters required to 6 earth pits and lift also required to
2 no's body earthing

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