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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 | |