In a 3-phase extra-high voltage cable, a metallic screen around each core insulation is

In a 3-phase extra-high voltage cable, a metallic screen around each core insulation is provided to 

(a) Facilitate heat dissipation (b) Give mechanical strength (c) Obtain longitudinal electric stress (d) Obtain radial electric stress 
by

1 Answer

Answer :

In a 3-phase extra-high voltage cable, a metallic screen around each core insulation is provided to Give mechanical strength

by

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