For economic size the ratio of outer diameter to the conductor diameter should be e What is the economic overall diameter of 1-core cable metal sheathed for a working voltage of 85 kV if the dielectric strength of the insulating materials is 65 kV/cm?

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For economic size the ratio of outer diameter to the conductor diameter should be e
What is the economic overall diameter of 1-core cable metal sheathed for a working
voltage of 85 kV if the dielectric strength of the insulating materials is 65 kV/cm?
Transcribed Image Text:For economic size the ratio of outer diameter to the conductor diameter should be e What is the economic overall diameter of 1-core cable metal sheathed for a working voltage of 85 kV if the dielectric strength of the insulating materials is 65 kV/cm?
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