Unit 51: Electromagnetic Generator
Unit 51: Electrical Technology
P1 describe the characteristics and principles of operation of a DC electromagnetic generator.
A DC electromagnetic generator produces direct power and also, electrical power (just like the AC generator). It is also produced based on same fundamental principle of Faraday’s Law of Electromagnetic induction where whenever a conductor cuts magnetic flux, dynamically induced electromotive force is produced, and this causes current to flow if the conductor/conductors is closed. The direction of induced current is given by Fleming’s right hand rule.
A DC generator consists of these vital parts: o Yoke- It is the outer frame of a DC and it is made up of cast iron or steel. It carries the magnetic flux produced by field …show more content…
P4 describe the characteristic features of two different types of electro-chemical cells or batteries.
Electrochemical cell is when a redox reaction is used to convert chemical energy into electrical energy with the help of oxidation and reduction reaction. These consist of two vessels (connected by a salt bridge/porous pot), two electrodes (made of different materials) and the electrode on which oxidation takes place is called the anode (or – ve pole) and the electrode on which reduction takes place is called the cathode (or + ve pole), two electrolytic solutions and a salt bridge. The electrolytes are taken in by half – cells.
There are many different types of electro-chemical cells and batteries but here is an explanation on two of them: o Chemical cells without transference- In this type of chemical cells, the liquid junction potential is avoided and the transference number is not taken into notice. In these cells, one electrode is reversible to cations while the other is reversible to the …show more content…
It conducts heat away from hot transformer coils. Some capacitors also use insulator oil.
P7 describe the properties and an application of two different magnetic materials commonly used in electrical and electronic engineering.
o Ferrite- These types of magnets magnets are made of a sintered composite of powdered iron oxide and barium/strontium carbonate ceramic. Because of the cheap prices of the materials and manufacturing methods, inexpensive magnets like this (or non- magnetized ferromagnetic cores, for use in electronic component such as radio antennas, for example) of different shapes can be easily mass produced. These magnets are non-corroding, but can be brittle and must be treated like other ceramics for it to be efficient. o Iron- Transformers are used widely in consumer electronic products to step down the supply voltage to a level where it will be suitable for the low voltage circuits they contain. In these kinds of applications the transformer could also act as a key safety component that electrically isolates the end user from direct contact with the extremely dangerous supply
P1 describe the characteristics and principles of operation of a DC electromagnetic generator.
A DC electromagnetic generator produces direct power and also, electrical power (just like the AC generator). It is also produced based on same fundamental principle of Faraday’s Law of Electromagnetic induction where whenever a conductor cuts magnetic flux, dynamically induced electromotive force is produced, and this causes current to flow if the conductor/conductors is closed. The direction of induced current is given by Fleming’s right hand rule.
A DC generator consists of these vital parts: o Yoke- It is the outer frame of a DC and it is made up of cast iron or steel. It carries the magnetic flux produced by field …show more content…
P4 describe the characteristic features of two different types of electro-chemical cells or batteries.
Electrochemical cell is when a redox reaction is used to convert chemical energy into electrical energy with the help of oxidation and reduction reaction. These consist of two vessels (connected by a salt bridge/porous pot), two electrodes (made of different materials) and the electrode on which oxidation takes place is called the anode (or – ve pole) and the electrode on which reduction takes place is called the cathode (or + ve pole), two electrolytic solutions and a salt bridge. The electrolytes are taken in by half – cells.
There are many different types of electro-chemical cells and batteries but here is an explanation on two of them: o Chemical cells without transference- In this type of chemical cells, the liquid junction potential is avoided and the transference number is not taken into notice. In these cells, one electrode is reversible to cations while the other is reversible to the …show more content…
It conducts heat away from hot transformer coils. Some capacitors also use insulator oil.
P7 describe the properties and an application of two different magnetic materials commonly used in electrical and electronic engineering.
o Ferrite- These types of magnets magnets are made of a sintered composite of powdered iron oxide and barium/strontium carbonate ceramic. Because of the cheap prices of the materials and manufacturing methods, inexpensive magnets like this (or non- magnetized ferromagnetic cores, for use in electronic component such as radio antennas, for example) of different shapes can be easily mass produced. These magnets are non-corroding, but can be brittle and must be treated like other ceramics for it to be efficient. o Iron- Transformers are used widely in consumer electronic products to step down the supply voltage to a level where it will be suitable for the low voltage circuits they contain. In these kinds of applications the transformer could also act as a key safety component that electrically isolates the end user from direct contact with the extremely dangerous supply