Question

The mark of safety necessary on electrical appliances

Answer 1

Answer:

ISI mark

ISI : Indian Standard Institute

Explanation:

The mark of safety in electrical application is ISI MARK, which is certified to use safely.

★The ISI mark is mandatory for certain products to be sold in India, such as many of the electrical appliances like switches, electric motors, wiring cables, heaters, etc.,

Answer 2

The mark of safety necessary on electrical appliances:-

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When the live wire of a faulty appliance coming direct contact with its metallic case due to break of insulation after its content use the appliance acquires the high potential of the live wire .

what if a person touches that appliance

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If a person searches the plants will get a petals shop because current flows through his body to the earth .

Steps took for preventing this shock :-

if the metallic case of the appliance is properly earthed then as soon as live wire comes in contact with the metallic case of appliances having current flows to the earth through the case of appliance.

Observations we will find after the current moves in the earth:-

• We will find that the fuse connected in the circuit of appliance blows off and appliance gets disconnected from the main supply.
• we will also find a person touching the appliance does not get any shock
• appliance is been also saved from being damaged.

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