Question

1) what is earthing?
2)what the merits of LED tv?
3)write the advantage of LED bulb ?
4)States joules law of heating?
5) what is fuse wire??
6) why nichrome wire used as a heating element??​

Answer 1

1. The process of transferring the immediate discharge of the electrical energy directly to the earth by the help of the low resistance wire is known as the electrical earthing. ... Mostly, the galvanised iron is used for the earthing. The earthing provides the simple path to the leakage current.

2. : Picture Quality. This is one of the noteworthy features that will shift the gear from

: LCD to LED. ...

: Efficiency/Consumption of Energy. ...

: Life Span. ...

: Price. ...

: Fluorescent Light. ...

: Superior Quality Picture. ...

: Angles of Viewing.

3. : LED lighting is energy efficient. LED fixtures are much more economical than halogen or incandescent light bulbs and so they can realize a huge cost savings. ...

: LED lighting is environmentally friendly. ...

: Longer expected life cycle. ...

: Many possibilities. ...

: No warm-up time. ...

: Shock resistant.

4. Joule's first law" (Joule heating), a physical law expressing the relationship between the heat generated and current flowing through a conductor. Joule's second law states that the internal energy of an ideal gas is independent of its volume and pressure, depending only on its temperature.

5. In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.

6. Because of its low cost of manufacture, strength, ductility, resistance to oxidation, stability at high temperatures, and resistance to the flow of electrons, nichrome is widely used in electric heating elements in applications such as hair dryers and heat guns.

Answer 2

Answer:

1) An earthing system or grounding system connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes. The choice of earthing system can affect the safety and electromagnetic compatibility of the installation.

2)They deliver better viewing angles than other LCD TVs; LEDs are long-lasting; LEDs are more energy efficient than their CCFL counterparts, and better than plasma Tvs and much better than CRTs; LEDs don't use mercury like some other backlighting methods.

3)The advantages of LED lighting

LED lighting is energy efficient. LED fixtures are much more economical than halogen or incandescent light bulbs and so they can realize a huge cost savings. ...

LED lighting is environmentally friendly. ...

Longer expected life cycle. ...

Many possibilities. ...

No warm-up time. ...

Shock resistant.

4)"Joule's first law" (Joule heating), a physical law expressing the relationship between the heat generated and current flowing through a conductor. Joule's second law states that the internal energy of an ideal gas is independent of its volume and pressure, depending only on its temperature.

5)In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.

6)Because of its low cost of manufacture, strength, ductility, resistance to oxidation, stability at high temperatures, and resistance to the flow of electrons, nichrome is widely used in electric heating elements in applications such as hair dryers and heat guns.

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