Question: A 6 6 - kV single - core lead sheathed cable is graded by using three dielectrics of relative permittivity 5 , 4 and 3

A 66-kV single-core lead sheathed cable is graded by using three dielectrics of relative permittivity 5,4 and 3 respectively; thickness of each being 1.5cm. The core diameter is 0.02 meter. Determine the maximum stress in the three dielectrics.
A 6 6 - kV single - core lead sheathed cable is

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