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प्रश्न
State two advantages of ‘the ring system of house wiring’.
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
The earth wire protects us from an electric shock.
In a cable, the green wire is the live wire.
A switch is connected to the neutral wire.
Why is the metal covering of an electrical appliance earthed?
State two circumstances when one may get an electric shock from an electrical gadget. What preventive measure must be provided with the gadget to avoid it?
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?
State the colour coding of wires in the flexible lead used for connecting the appliances to the mains in a house circuiting.
According to the old convention, the colour of the earth wire is ______.
A power circuit uses a cable having three different wires. Between which of the two wires should the heating element of an electric geyser be connected?
