FAQ-2 (Electrical)(Matter,Speed Of electricty,Electric shock,Fuse,Material For fuse wire,Fusing factor,Soldering,brazing,Sources of electicity,electron speed)

1. What is matter?

The matter is defined as anything, which possesses weight and occupies space and
can be in any of three forms solid, liquid or gaseous. The matter consists of three
ingredients, which are protons, neutrons and electrons.

2. What is the speed of electricity or electrons?

The speed of electricity or electrons is 297842 km (186000 miles) per second.

3. How we get electric shock?

On all alternators, transformers neutral is earthed. Human body is conductor and
when touched to the live conductor it completes its shortest root though the body and
the body gets electric shock in which its nervous system, the heart, respiratory
system may cease to function.

4. What is fuse and what materials used for fuse wire?

Fuse is a weakest point in an electrical circuit, which melts when the excess current
flows through it in the electrical circuit.
The materials, which can be used in fuses, are tin, lead, zinc, silver, antimony,
copper, and aluminium, etc.

5. What is fusing factor?

The ratio of minimum fusing current and the current rating of fusing element is
called the fusing factor.
Fusing factor = minimum fusing current / current rating of fusing element. Its value
is always more than 1 (one).

6. What is soldering and what is brazing?

Soldering is the process of joining two metals with an alloy whose melting point is
less that of the materials to be soldered.
Soldering at high temperature using brass as solder is called brazing or hard
soldering.
The composition of the fine solder (soft solder) is tin 60% and lead 40%. Its melting
point is 190°C and is widely used.

7. What are the sources of electricity?

a. Battery (chemical source)
b. Generator (magnetism)
c. Thermocouple (heat generated)
d. Light (photo electric or solar cell)
e. Pressure (piezo electricity)
f. Friction (static electricity)