What is difference between Neutral and Ground ?

If we take an example of a 2 wire system, There is a Live wire and a Neutral wire. Live wire carries the current and Neutral wire works as the return path. A return path is necessary to complete the circuit. Hence in a closed circuit neutral wire carries same current as live wire. Ground is not the part of this closed circuit, ground wire should not carry any current in normal conditions. Whenever there is a fault the fault current flows through ground wire and goes to ground as ground has infinite capacitance. Earthing is done to avoid stray electric fields.

Basic Electrical Engineering By I. J. Nagrath - Full Book Online

Percentage Electrical Conductivity of Material

In this table we will discuss about the conductivity of materials. A-lot of people on google are searching " Silver is more conductive than gold ? " | " Conductivity of copper vs conductivity of silver ?" | " Aluminium Vs Copper in wires " etc.

All your answers can be found using this chart.
The Top Conductive Materials are arranged in their descending order.

Name of Material	Percentage of Conductivity
Silver	104-105
Copper	98-100
Gold	65-70
Aluminium	56-61
Nickel	20-22
Zinc	27
Brass	28
Iron	17
Tin	15
Phosphor Bronze	15
Lead	7
Nickel Aluminum Bronze	7
Steel	3 -15

So We can see from this table that Silver is the most conductive material. 

Flemings Right Hand Rule with diagram

To Remember and understand Fleming's Right Hand Rule Always Remember a simple Phrase - FATHER MOTHER CHILD , how is this helpful ?

Well ,F from father will represent F for Force 

M from Mother will represent M for Magnetic Field

C from Child will represent C for Current. 

So if we place our fingers like this :

That means Thumb , Index Finger and Middle finger all aligned at 90 degrees to each other. 

Then Thumb will represent Motion of Force , Index Finger will represent Direction of Magnetic Field and Middle finger will represent Direction of Current. All Perpendicular to each other.

Why is Silicon Steel used in Generators and Transformers?

Silicon Steel is preferred over other steels to be used in transformers and generators because it improves the ability of magnetic fields to penetrate it, and reduces the hysteresis losses present in the steel. It can also reduce the rate of Corrosion but the Primary factor to Add Silicon to Steel is to reduce the Hysteresis Losses.

Silicon + Steel = Reduction of Hysteresis Losses.

Why Short Circuit test is performed on LV side?

A Short Circuit test is used to calculate the copper losses , load current and other values so in order to measure these values we have to apply meters , if the meters are connected to measure the values of Low Voltage ( LV ) side then it will be easy to find and use low voltage measuring meters, on HV side the meters required will be of higher range.

Difference Between Electrical and Electronics

Difference Between Electrical and Electronics

Electrical - A High Voltage of magnitude upto 440, 220, 132 KV etc. and a considerably low frequency - 50Hz, 60 Hz etc. Machines that fall under this category arr Power Transformers, Electrical Motors etc.

Electronics - A High Frequency ( of Mhz ) and considerably low voltage 5 V, 12 V etc.

Applications - Mobile Chargers, amplifiers, filters etc.


If you know some other differences please  comment below.