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प्रश्न
State two advantages of ‘the ring system of house wiring’.
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उत्तर
The three advantages of ring system are:
(i) Length of wiring used is much less and so less costly, since a single ring feeds the whole house.
(ii) In case of short-circuit, only the fuse of that particular appliance blows off, diconnecting it from the electric circuit; while the circuits of other appliances remain unaffected.
संबंधित प्रश्न
Name the color code of the wire which is connected to the metallic body of an appliance.
A fuse is connected to the live wire.
The red colour insulated wire in a cable is the .............. wire.
A fuse wire should have low .................
A fuse wire should have
Can we use copper wire as a fuse wire? Give reason.
Which fuse wire is thick: 5 A or 15 A?
Why is the metal covering of an electrical appliance earthed?
What is the colour code for the insulation on the live wire?
Name the material and type of wires for the following:
(a) Connecting wires for lighting
(b) Fuse wire
(c) Heating elements
(d) Connecting wires of a power line
(e) Earthing elements
