PUP Privatization: PUPcet 2011-2012 PUP iapply application to entrance exam

PUP Privatization: PUPcet 2011-2012 PUP iapply application to entrance ex...

What are Motor controls and how they work

Motor controls a quick summary       Motor controls are those devices that operate electric motor particularly, those high powered electric motors used to operate machines like electric drilling machines, wood lathe machine, electric bending machine and those other...

A review Complex number

Complex number review     Complex number are usually discussed in the first part of advanced mathematics and here is a quick review about it. Consider the equation it has has NO SOLUTION in real number system. But in eighteenth century mathematician invented a  ...

How are coils connected in an alternator ?

Alternator coil connections   There are two ways of connecting the coils of the three phase AC generators  or alternator in a load. These are the wye or the star connection and the delta connection. Generally, generators are wye connected ( earth wire) but loads can be either delta...

Transformer operation and construction

Transformer: Basic operation and construction   Transformer is an electrical device that converts voltage from one value to another that is, either from high voltage to lower voltage which is termed step- down transformer, or from lower voltage to higher voltage which is termed step up transformer.   The...