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.
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.
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.
Who was Captain Swing? What did the name symbolise or represent?
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
See lessthreshing machines.
What is the function of an earth wire? Why is it necessary to earth metallic appliances?
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.
See lessWhat precaution should be taken to avoid the overloading of domestic electric circuits?
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 :
See less(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.
Name some sources of direct current.
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.
See lessState the principle of an electric generator.
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.
See less