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What is AC supply and DC supply.

 

What is AC supply and DC supply

There are mainly two types of Electric supply

1.            AC

2.            DC

Electricity is generated in the form of AC(alternating) at generating station/ power station.

But what is mean by AC supply ?

AC Supply :

The quantity which changes its value as well as direction (polarity changes positive to negative) continuously with respect time that is called as AC supply.

AC means Alternating Current .  Polarity of AC supply is continuously changes.



AC supply can produced magnetic fluxes whenever current flowing through conductor. This nature of AC supply makes it very very useful.

AC supply is further converted into DC by using filters in order to used for various electronics and other application.

AC can not be stored in batteries.

AC supply have frequency of 50 Hertz.

The machines which are operate on AC supply that  machine are called as AC machines.

AC machines are : AC Motor, Generator and Transformer we see this in details in another blog.

Now we know about AC supply let understand what is DC supply.

 

3.     DC Supply  :


The supply(current) which does not change its polarity (direction) that is called as DC (current) supply. DC means Direct Current.

DC can be pure DC or pulsating DC.

DC can be stored in batteries.

DC supply has zero frequency.

The machines which are operate on DC supply that are called as DC machines.

E.g. DC motor and DC generator.

 

Comparison Chart

Basis

Alternating current

Direct current

Definition

The direction of the current reverse periodically.

The direction of the current remain same.

Causes of flow of electrons

Rotating a coil in a uniform magnetic field or rotating a uniform magnetic field within a stationary coil

Constant magnetic field across the wire

Frequency

50 or 60 Hertz

Zero

Direction of flow of electrons.

Bidirectional

Unidirectional

Power Factor

Lies between 0 and 1

Always 1

Polarity

It has polarity (+, -)

Do not have polarity

Obtained From

Alternators

Generators, battery, solar cell, etc.

Type of load

Their load is resistive, inductive or capacitive.

Their load is usually resistive in nature.

Graphical Representation

It is represented by irregular waves like triangular wave, square wave, square tooth wave, sine wave.

It is represented by the straight line.

Transmission

Can be transmitted over long distance with some losses.

It can be transmitted over very long distance with negligible losses.

Convertible

Easily convert into direct current

Easily convert into alternating current

Substation

Few substation is required for generation and transmission

More substations are required for generation and transmission

Passive Parameter

Impedance

Resistance

Harazdous

Dangerous

Very dangerous

Application

Factories, Industries and for the domestic purposes.

Electroplating, Electrolysis, Electronic Equipment etc.

 

So now you can known what is AC and DC in upcoming blogs I will share information about AC machines and DC machines So stay healthy and Stay connected with Engineeringdudes4u.

 

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