DC FULL FORM - SSC NOTES PDF

# DC FULL FORM

## DC FULL FORM

Full Form of DC : Direct current

### What is the Full form of DC?

No:1. The full form of DC is Direct current.
No:2. Direct current is the unidirectional flow of an electric charge.
No:3. Direct current may flow through conductors like wire, but also can flow via the semiconductors, or through the vacuum.
No:4. The electric current flows in a constant direction, distinguishing it from alternating current (AC).

##### Examples of direct current

No:1. The primary use of DC is to the power supply and also to charge the batteries for electrical equipment. The mix of plus & minus signs, a dotted line or a straight line is available in DC.
Example: Flashlights, Mobile phone batteries,flat-screen TV & electric vehicles.

### How can we convert AC to DC and DC to AC?

No:1. The alternating current (AC) can be converted in to direct current by using a rectifier.
No:2. The direct current (DC) can be converted into alternating current by using an inverter.

##### Benefits of DC

No:1. The electrical device is more powerful when charged from DC.
No:2. Less chance of electrical shocks if the voltage is less than 48V
No:3. The DC transmission line can transfer more power over long distances with less loss of electricity. It also enhances performance and decreases the cost of transmission.
No:4. Compared to AC lines, DC transmission lines need less ground, narrower structural support.

###### Another full form of DC

No:1. Other full form of DC  is Data Compression.
No:2. To minimize the amount of storage in bits, DC is a digital signal mechanism wherein data to be sent is compressed.
No:3. After applying DC, you can conclude that the space of the data storage is lower than normal.
No:4. Transmission of data dramatically decreases data storage space and transmission power.
No:5. It is also recognized as reducing bit-rate or source coding.
No:6. Back utilities, database management system and so on, usually use the method of data compression.

#### Parts of data compression

Data compression mainly has two parts.

###### No:1. Lossless

a). Compression is accomplished by the detection and removal of any statistical redundancy in the lossless compression process.
b). For example, when we encrypt a source of data before transmitting it, the size is decreased quickly and information stays unchanged and unaffected as well.

##### No:2. Lossy

a). Some pieces of information are removed or lost in the lossy compression process.
b). Since, before transmission, it recognizes and then deletes the unnecessary content.