Which D.C. distribution network configuration is characterized by maximum simplicity and minimal initial cost ?
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Answer: A. Radial system
Explanation
A radial distribution system features a single path from the source to the connected loads. The single path design ensures maximum simplicity and the lowest initial installation cost for networks. Simplicity in layout and fewer required components make radial networks highly economical to construct initially. Distribution networks deliver electrical energy from transmission substations directly to commercial and residential end users. Radial systems branch out from a central substation without providing alternative secondary paths for power flow. Direct current distribution systems historically served localized urban areas before alternating current networks became dominant.
Utility companies use radial configurations primarily in rural areas where consumer density is relatively low. Lower initial capital expenditure makes radial layouts attractive for powering remote or sparsely populated communities. Designers must balance the low initial cost of radial systems against their lower overall supply reliability. Ring systems provide closed loops with multiple supply paths, increasing reliability but significantly raising initial costs. Interconnected systems mesh multiple sources together, offering maximum reliability while demanding complex protective relay schemes. Selecting none of the above ignores the accurate classification of radial networks as the simplest option.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
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