Advertisements
Advertisements
प्रश्न
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?
Advertisements
उत्तर
Rating of appliance 5 kW 200 V
∴ I = `5000/200`
= 25 A very high current
So A fuse rated 8A cannot be used.
APPEARS IN
संबंधित प्रश्न
State the characteristics required in a material to be used as an effective fuse wire.
A fuse is rated 8A. Can it be used with an electrical appliance rated 5 KW, 200 V ? Give a reason.
Why is the fuse wire fitted in a porcelain casing?
Explain the meaning of the statement ‘the current rating of a fuse is 5 A’.
An electric kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a fuse of current rating 13 A.
(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 ?
How does the thickness of a fuse wire depend on its current rating?
State the purpose of using a fuse in a circuit.
Name two safety devices which are connected to the live wire of a household electric circuit.
Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit?
