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# What is Polarity? How many types is this? How is it selected?

Polarity kya hai in hindi:- Welcome My Website- iticourse.com Guys, what is polarity in this post? Its types and its selection or election have been told.

### What is Polarity?

“The direction of the current flowing in an electric circuit is Polarity They say.”
This is only D.C. Welding only happens in machines, because when we make the electricity flow in the direction. It flows in the same direction, does not change direction by itself.
Polarity AC Does not happen in welding machines. Because in this the electricity keeps changing its direction automatically.

### Selection of Polarity

Its selection or selection is done according to the electrode. That we have to use simple polarity or opposite polarity.

### Types of Polarity

It is mainly of two types, which are as follows-

#### 1.Simple Polarity

This type of polarity is used for welding on heavy jobs. In this type of polarity, the job is kept positive and the electrode negative. Due to which 66% of the heat is generated on the job and 34% of the temperature at the electrode is generated.

#### 2. Opposite polarity

This type of polarity is used for welding non ferrous metals, cast iron, hard facing, thin sheets, stainless steel and metals such as aluminium. When position welding is to be done at a place, it is also used there.
In this the electrode melts more, because the job is kept negative and the electrode positive. Due to which 66% of the temperature is generated on the electrode and 34% on the job. In this, the use of D.C. and A. C. is reduced.

Guys, what if you have polarity? and good post like this engaged If yes then comment and share.