A uniformly-loaded D.C. distributor supplied with equal voltages at both ends experiences what voltage drop at its midpoint compared to a single-end fed equivalent______________?
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Answer: A. one-fourth
Explanation
Feeding a uniformly loaded distribution cable from both ends with equal voltages creates symmetrical voltage drops. Mathematical derivation shows that the maximum voltage drop occurs at the midpoint of the distribution line. Feeding from both ends reduces this maximum midpoint voltage drop to exactly one-fourth of a single-end fed line. Electrical distribution systems deliver power to consumers along lines drawing uniform current per unit length. Voltage drop calculations sum the incremental resistance losses along the length of the copper or aluminum conductor. Dual-end feeding methods improve overall voltage regulation and enhance reliability across extended distribution networks.
One-third is an incorrect mathematical fraction derived from improper distribution loading and feeding assumptions. One-half would represent the reduction for a concentrated load rather than a uniformly distributed line load. Twice would increase the voltage drop instead of reducing it through dual-end power feeding techniques.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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