Advertisements
Advertisements
प्रश्न
Why fuse wire must always be connected in ‘live’ wire? Explain.
Advertisements
उत्तर
Under any circumstances, fuse wire always be connected in a live wire and never in neutal wire. The reason is that in the case of over-loading, if fuse wire is connected in neutral wire, it will certainly melt and break, but the electric appliance still be in contact with the live wire, so if any person happens to touch the appliance, he will get a shock which may prove fatal.
APPEARS IN
संबंधित प्रश्न
A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.
A fuse is a short piece of wire of high ______ and of material of low ______.
A fuse wire is made of an alloy of ______ and ______. If the current in a circuit exceeds the current rating of the fuse wire, it ______.
How is a fuse put in an electric circuit?
Describe with the aid of a diagram some form of a fuse which is used in the electric lighting circuit of a house. Give two reasons why a fuse must not be replaced by an ordinary copper wire.
(i) Write one advantage of connecting electrical appliances in parallel combination.
(ii) What characteristics should a fuse wire have ?
(iii) Which wire in a power circuit is connected to the metallic body of the appliance ?
Higher the current rating, _______ is the fuse wire.
(a) Name the electrical appliance shown in the diagram below.
(b) Name the material of the wire used in this device.
(c) Name two important characteristics of this wire.
How does the length of a fuse wire depend on its current rating?
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
