In comparison to D.C transmission losses in AC arc:
Correct answer: B. High
- A. Low
- B. High
- C. Negligible
- D. None of the above
Explanation
In comparison to DC transmission, losses in AC transmission are generally higher. This is due to the skin effect, which causes most of the AC current to flow near the surface of the conductor, increasing resistance and, consequently, losses.
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Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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