1. It was a mythic name used in the letters of warnings to the farmers using threshing machines.

    It was a mythic name used in the letters of warnings to the farmers using
    threshing machines.

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  2. The earth wire functions as a safety measure, specially for those appliances that have a metallic body e.g., electric press, toaster, table fan, refrigerator, room cooler etc. The metallic body of the appliance is connected to the earth wire, which provides a low resistance conducting path for electRead more

    The earth wire functions as a safety measure, specially for those appliances that have a metallic body e.g., electric press, toaster, table fan, refrigerator, room cooler etc. The metallic body of the appliance is connected to the earth wire, which provides a low resistance conducting path for electric current. It ensures that any leakage of current to the metallic body of an appliance keeps its potential same as of earth. As a result, the user would not get a severe electric shock, even if he touches the body of appliance.

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  3. We should take following precautions to avoid the overloading of domestic electric circuits : (i) Two separate circuits should be used, one of 5 A current ratings such as geysers, air coolers, electric iron, electric stove etc. (ii) Too many appliances should never be connected to a single socket. (Read more

    We should take following precautions to avoid the overloading of domestic electric circuits :
    (i) Two separate circuits should be used, one of 5 A current ratings such as geysers, air coolers, electric iron, electric stove etc.
    (ii) Too many appliances should never be connected to a single socket.
    (iii) A fuse of appropriate current rating should be used with the electric circuit.

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  4. Some sources of direct current are a cell a battery and a D.C. generator.

    Some sources of direct current are a cell a battery and a D.C. generator.

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  5. An electric generator is based on the principle of electromagnetic induction. when a coil is rotated in a uniform magnetic field, an induced voltage is generated between the ends of the coil.

    An electric generator is based on the principle of electromagnetic induction. when a coil is rotated in a uniform magnetic field, an induced voltage is generated between the ends of the coil.

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