Introduction to Motors ,Generators and transformers

In this subject in our most of the time, we deal with rotating machines especially electromechanical energy conversion machines. DC as well as AC. we deal with motors and generators.

Motors: It is the machine used to convert electrical energy into mechanical energy.

Generators: It is a machine used to convert mechanical energy into electrical energy.

We deal with these machines in the subject of electrical machines but at the time of generation of electricity it is of the order of only 10-12kV but at the time of transmission it is of the order of 465-800kV so here the need of transformers comes into the picture. These are of two types 

Step-up transformer: whenever we need to convert the voltage for the production level ( 10-12kV ) to the transmission level(465-800kV) we use this type of transformer.

Step-down transformer: whenever we need to convert the voltage from the transmission level to the domestic level we use this type of transformer.

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Introduction to Field Effect Transistors (FET's) also similarity and difference

 Introduction to Field Effect Transistors (FET's)  also similarity and difference

• BJT and FET Both are 3 terminal devices
• BJT and FET's have nearly equal importance.
• BJT is a current-controlled device while FET's are voltage-controlled devices its the main difference between them. ( Ic=f(Ib) and Id = f(Vgs) )
•  BJT is a bipolar device and FET's are unipolar devices.
• FET's are of two types n -channel FET's and p-channel FET's.
•  FET's can be used as amplifiers or switches.
•  FET's are classifieds into two categories JFET and MOSFET
• JFET is classified into two categories n -channel and p- channel.
•  MOSFET is classified into DMOSFET and EMOSFET. and bother of them further divided into two categories n-channel and p-channel.
• FET's are known as Field effect transistors because there is an electric field is developed by the charge is present and this electric field controls the conduction path of the output circuit.So there is an effect of electric field and so this device is known as Field effect transistors.
  
• Input impedance: FET's have higher input impedance as compared to BJT's
• FET's are more temperature stable then BJT.
•  FET's are smaller then BJT.
•  BJT's are more sensitive to the applied signal as compared to the FET's.

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Some Best Animes

Naruto

This anime is one of the best animes I have ever seen. This anime is about a boy named Naruto who wants to become a Hokage because he is treated differently from others because of having a monster named nine Tail's spirit inside him who destroyed half of the leaf village( the village in which naruto leaves ). In the anime there are all shinobis which are basically ninjas.

It have approx 220 episodes after this Naruto shipudan starts.

Death Note

This anime is also one of the great anime I have ever seen in this anime there is a notebook in which if anyone writes a name then he will die by the hurt attack and if he mentions the reason for death then the person dies with the mentioned reason. this notebook belongs to shinigami world but the shinigami's are bored so they through this notebook in the human world and a genius student named Light Yagami gets this and with his genius mind he try to eliminate all the criminals from the world. people said him, Kira. This anime is of approx 40 episodes but it was one of the best a suggest you watch it now.

Erased

This anime is also one of my favorite anime it is short anime of approx 12 episodes. and in this somehow a people is able to move from his present time to past time and he is able to change something from past which prevents the future crimes which he seen in the future.

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