Definition: Electricity is the same type of energy as heat, light, mechanical or chemical energy. Naturally, various devices are used to convert any form of energy into electric power, but the existing energy from different devices is classified into two groups.
1. DC (Direct current)
2. AC (Alternating current).
AC: The cost and direction of the current flowing through the circuit is constant all the time. A single supply is called direct (DC) current supply. The cost of this supply is stable at + V, and its direction is also stable at full time. Generally, the supply from the Cell, Battery and Solar pannel device is of a DC nature.
DC: The supply of electricity which is constantly changing the cost and direction of the current flowing through the circuit is called AC (Alternating Current) supply .The cost of this supply is constantly changing. At the same time, its direction is changing from positive to negative. The power generated by the power generator as well as the hydroelectric and thermal power plants are of AC type.
Important Properties of AC Supplies:
1) Peak Value - Maximum supply money or Maximum loan price, is called Maximum price Vp.
2) Peak To Peak Value - The difference between maximum money to maximum debt is called Vpp.
1) RMS (Root Mean Square) - heat of AC supply. The potential for generating power is the RMS cost, which is the maximum cost. Is equal to 0.707V, yes, the cost of the AC supply to the electrical device is stated in the Vrms format. (E.g. २३०V AC).
4. Cycle - A complete round of AC supply is called Cycle. Indicates the duration of a cycle with the letter 'T'.
5. Average cost - The average cost of a half cycle is Vav = 0. 637 Vp.
6.Frequency - Frequency is the number of times a unit of AC supply it is measured in Hz.
Different between AC and DC :
AC:
1. Generation and transmission can be done easily.
2. Transformer can be easily converted to electricity with this simple tool.
3. Can easily be converted to DC.
4. Cannot be stored.
DC:
1. Difficult to generate.
2. Voltage level is not easily changed.
3. Difficult to convert to AC.
4. Can be easily stored using cell or battery device.
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