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Question

Which of the statements are true about ring system?
  1. Each appliance has seperate fuse.
  2. Connections of all appliances with the mains are in series.
  3. The plugs and socket are of same size.
  4. Current can travel to individual appliances through two seperate paths.


Solution

The correct options are
A Each appliance has seperate fuse.
C The plugs and socket are of same size.
D Current can travel to individual appliances through two seperate paths.
The house wiring is commonly done by using the ring system. In this system, we have seperate ring for each portion of the house. The major advantages of ring system are as follows:
(i) The current can travel to individual appliance through two seperate paths which reduces the cost of wiring.
(ii) The plugs and socket of the same size can be used. But each socket must have its own fuse rating.
(iii) Connections of all appliances with the mains are in parallel.
(iv) While installing a new appliance in  the room, a new line up to the distribution box is not required. Each appliance has a seperate fuse.

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