name the electric device that convert mechanical energy into electrical energy draw the labelled diagram and explain the principle involved in the device or (i) what is the function of earth wire is electrical instrument (ii) element what is sold circuiting and Electric Supply (iii) what is the usual current rating of fuse wire in the line of feed (a) light and Fan (b) appliances of 2 KW or more power
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electric generators convert mechanical energy into electrical energy you can see figure on Google and your text book
i) Earth wire prevent us from shocks
rating of fan and light - 5 A
and rating of appliances above 2Kw - 15 A
hope it helps you Mark as brainliest plz ☺
i) Earth wire prevent us from shocks
rating of fan and light - 5 A
and rating of appliances above 2Kw - 15 A
hope it helps you Mark as brainliest plz ☺
sachin370785:
i need answer plzz help me..
ya where is ur questions
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HOLA friend!!
Rajdeep here....
An AC generator is the device which converts mechanical energy of its rotation into electrical energy. An AC generator works on the principle of Electromagnetic induction, according to which, if there is a change in the magnetic flux linked with the coil, an emf is induced in the coil. Refer to the attachment to get the diagram of an AC generator.
(i) An earth wire is connected to the metallic case of an appliance. Whenever the live wire comes in contact with the metallic body of the appliance due to break of insulation or any other reason, the heavy current flows through the earth wire to the earth, the fuse melts, and breaks the circuit, thus saving the appliance from damage, and you, from getting a fatal shock.
(ii) Short circuiting is the generation of heat (overheating) of wires when the live wire comes in contact with the neutral wire. In this case, the current gets a zero-resistance path to flow, due to which, the wires heat up to the extent that it causes a fire.
(iii) (a) Current rating of a circuit containing light and fan is 5A (5 Amperes).
(b) Let the Power of the appliance be 2kW = 2000W
Let the voltage supply be 220V.
Now, safe limit of current through it = P/V
= 2000/220 = 9.09A
Hence, the fuse rating for such appliances is 10A or more.
Thanks!
Rajdeep here....
An AC generator is the device which converts mechanical energy of its rotation into electrical energy. An AC generator works on the principle of Electromagnetic induction, according to which, if there is a change in the magnetic flux linked with the coil, an emf is induced in the coil. Refer to the attachment to get the diagram of an AC generator.
(i) An earth wire is connected to the metallic case of an appliance. Whenever the live wire comes in contact with the metallic body of the appliance due to break of insulation or any other reason, the heavy current flows through the earth wire to the earth, the fuse melts, and breaks the circuit, thus saving the appliance from damage, and you, from getting a fatal shock.
(ii) Short circuiting is the generation of heat (overheating) of wires when the live wire comes in contact with the neutral wire. In this case, the current gets a zero-resistance path to flow, due to which, the wires heat up to the extent that it causes a fire.
(iii) (a) Current rating of a circuit containing light and fan is 5A (5 Amperes).
(b) Let the Power of the appliance be 2kW = 2000W
Let the voltage supply be 220V.
Now, safe limit of current through it = P/V
= 2000/220 = 9.09A
Hence, the fuse rating for such appliances is 10A or more.
Thanks!
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