1.

A single core cable used on a 3.3 kV, 50 Hz system has conductor diameter 10 mm and internal diameter of sheath 25 mm. Permittivity of insulator of sheath, k = 3.5, power factor of an open circuit is 0.03. The capacitance of cable per km will be

A. 0.212 μF
B. 0.414 μF
C. 0.667 μF
D. 0.512 μF
Answer» B. 0.414 μF


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