A 3-phase transmission line using 20 mm diameter conductor. When these conductors are placed at the corners of an equilateral of each side 3 m, the inductance of the line per kilometer is O 1.05 mH/km O 1.05 H/km O 1.2 H/km O 1.2 mH/km

EBK ELECTRICAL WIRING RESIDENTIAL
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Chapter28: Overcurrent Protection–fuses And Circuit Breakers
Section: Chapter Questions
Problem 13R: All electrical components have some sort of withstand rating. The NEC and UL Standards refer to this...
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A 3-phase transmission line using 20 mm diameter conductor. When these conductors are placed at the corners of an equilateral of each
side 3 m, the inductance of the line per kilometer is
O 1.05 mH/km
O 1.05 H/km
O 1.2 H/km
O 1.2 mH/km
Transcribed Image Text:A 3-phase transmission line using 20 mm diameter conductor. When these conductors are placed at the corners of an equilateral of each side 3 m, the inductance of the line per kilometer is O 1.05 mH/km O 1.05 H/km O 1.2 H/km O 1.2 mH/km
If the per unit reactance of a power system up to the fault point is 0.2pu and base power (VAb) is 10 MVA, then the fault level (VA) is
O 2 MVA
O 500 MVA
O 100 MVA
O 50 MVA
Transcribed Image Text:If the per unit reactance of a power system up to the fault point is 0.2pu and base power (VAb) is 10 MVA, then the fault level (VA) is O 2 MVA O 500 MVA O 100 MVA O 50 MVA
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