of all of dem 3 phase 3 wire is most economical as it uses less conductor dan in 4 wire system, 3 phase 3 wire is used in transmission and 4 wire in distribution as it has 3 live and one neutral wire.
3 phase needs lesser conductor size than 2 phase 4 wire for the same power.
3 wire dc feeder is more economical than 2 wire dc feeder for the same power.
that was all i cud get..... hope u find it a lil helpful.
sdd
They both convey messages or information relatively quickly.
Windows is the most best operating system
A single force cannot exist because forces are interactions between two or more objects. For a force to be present, there must be an object or system exerting the force and another object or system experiencing the force. It is this interaction that defines and characterizes a force.
explain the difference between systems and sub systems
A reference point helps to explain why we are, where we are.
The circulatory system and respiratory system are interlaced. The circulatory system much deliver nutrients to all the parts of the body. Every single part of the body needs oxygen, so the circulatory system takes the oxygen collected by the respiratory system and delivers it to the rest of the body.
A comparison between an unknown quantity and a standard is known formally as a measurement. In essence, by taking a measurement of a standard against an unknown quantity, you are creating your own system of measurement.
A system of government in which power is divided between a central authority and constituent political units
unix is a multiuser operating system but widows is a single user operating system.
The comparison between output and input work is called efficiency. It is a measure of how well a system can convert input work into useful output work. Efficiency is usually expressed as a percentage, with 100% being perfect efficiency.
single destroys the brain and double destroys the spinal cord or central nervous system