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difference between coupling and socket
In a radial circuit you wire 3 cables (live/hot, neutral and earth) from the board to the first socket, and then loop these cables on from socket to socket till you get to the last socket and you are finished.In a ring circuit, the is an additional set of cables from the last socket back to the board. This increases the load that can be put on the circuit.In my country (Ireland) this is generally not in practice any more, and most circuits are radial circuits.
2 Amp
No, a main computer is not necessary as the router can be plugged into a socket.
what is the difference between plug ang socket?
It is a term used to refer to places that you plug things into your mother board i.e.; CPU, memory, add on cards etc. Additionally in a different context it also represents a single connection between two network applications.[edit: synonym=port]http://en.wikipedia.org/wiki/Internet_socket Internet socket (or commonly, a network socket or socket) is the endpoint of bidirectional communication flow across an internet Protocol-based computer network, such as the InternetA socket is one end-point of a two-way communication link between two programs running on the network.
Ring connection ensures continuety in supply
Based on the definitions at the associated links, a bus is an electronic connection which allows the transfer of information, whereas a port is a socket in the side of a computer which allows a matching plug to connect to that computer.
A socket is not a port, though there is a close relationship between them. A socket is associated with a port, though this is a many-to-one relationship. Each port can have a single passive socket, awaiting incoming connections, and multiple active sockets, each corresponding to an open connection on the port. Port identifies a service no. e.g.25 port no is for smtp
It is 120V
A butt weld is a weld made between two straight cut profiles , a socket , or plug weld is made between a surface and a hole.
The Spigot end is the ends that goes into the socket end of the pipe