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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.
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संबंधित प्रश्न
A fuse is connected to the live wire.
A switch is connected to the .......... wire.
All wires used in electric circuits should be covered with
Fuse wire is an alloy of
A fuse wire should have
Why is the metal covering of an electrical appliance earthed?
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
Why is the heating coil placed in a circular porcelain plate in an electric stove?
A lady working in her kitchen received a shock from an electric hot plate. What could be the reason for the shock?
Name the colour code of the wire which is connected to switch for the appliance.
