The expression 0.01E+0.003E^2 the thickness in millimeters (mm) of the insulation needed for a high voltage cable. E is the number of kilovolts carried by the cable. What thickness of insulation material is needed for 7 kilovolt cable?

a) 0.091mm

b) 1.54mm

c) 0.217mm

d) 0.847mm

Question

15 February, 14:39

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Braydon Blackburn · Answer 1

Putting 7 into E in the equation for thickness:

Thickness = 0.01 (7) + 0.003 (7) ²

= 0.217 mm

The answer is C.

The expression 0.01E+0.003E^2 the thickness in millimeters (mm) of the insulation needed for a high voltage cable. E is the number of kilovolts carried by the cable. What thickness of insulation material is needed for 7 kilovolt cable?a) 0.091mmb) 1.54mmc) 0.217mmd) 0.847mm