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Transmission of power by ac cables is impossible beyond.
- a)40 – 60 km
- b)400 km
- c)200 km
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Transmission of power by ac cables is impossible beyond.a)40 – 6...
Beyond a certain distance (dependent on voltage/type of cable), the capacitive losses make AC transmission uneconomical, though it is still physically possible.
Capacitance is inversely proportional to the distance between the conductor and ground, which are quite close in a cable (as opposed to transmission lines, which have lots of air between the cable and the ground).
Capacitance is proportional to the length of the cable, so becomes the limiting factor at longer distances.
Most Upvoted Answer
Transmission of power by ac cables is impossible beyond.a)40 – 6...
There is a big mistake in this question , It should have clarified which AC transmission it is talking about , If it is overhead transmission then AC can be sustained for 400-600 Km distance , but beyond 600 Km It will be costlier .
However If you says Underground AC cables then 35-50 is the limit , beyond 50 Km you will need DC if you want it to be economical .Since question asked do not mention which transmission it is talking about . You can skip this question .
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Transmission of power by ac cables is impossible beyond.a)40 – 6...
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