GETCO Exam Paper (11-06-2017)
For a lossy transmission line, the characteristic impedance does not depend on

length of the line
the conductivity of the conductors
the operating frequncy of the line
conductivity of the dielectric separating the conductors

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GETCO Exam Paper (11-06-2017)
In a 3-phase, 4-wire cable the cross sectional area of neutral conductor is

half of the area of phase conductor
1.5 times the area of phase conductor
double the area of phase conductor
equal to the area of phase conductor

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