Induction Motor Torque Versus Slip
The torque of an AC induction motor is dependent upon the strength of the interacting rotor and stator fields and the phase relationship between them. Torque can be calculated by…
AC Induction Motor Slip
It is virtually impossible for the rotor of an AC induction motor to turn at the same speed as that of the rotating magnetic field. If the speed of the…
AC Motor Theory
AC motors are widely used to drive machinery for a wide variety of applications. To understand how these motors operate, a knowledge of the basic theory of operation of AC…
PLC Program for Counting Moving Objects on Conveyor
This is a PLC Program to implement a program for counting objects on the moving conveyor. Learn Ladder Logics.
AC Generator Voltage Regulators
Because the voltage from an AC generator varies as the output load and power factor change, a voltage regulator circuit is necessary to permit continuity of the desired output voltage.…
Three Phase AC Generators
The principles of a three-phase generator are basically the same as that of a single-phase generator, except that there are three equally-spaced windings and three output voltages that are all…
Types of AC Generators
As previously discussed, there are two types of AC generators: the stationary field, rotating armature; and the rotating field, stationary armature. Small AC generators usually have a stationary field and…
Parallel AC Generators
Paralleling AC Generators Most electrical power grids and distribution systems have more than one AC generator operating at one time. Normally, two or more generators are operated in parallel in…
AC Generator Nameplate Ratings
Typical name plate data for an AC generator (Figure) includes: (1) manufacturer; (2) serial number and type number; (3) speed (rpm), number of poles, frequency of output, number of phases,…
PLC Program to Read Temperature in PLC
This is a PLC Program to read the temperature in PLC. Learn PLC programming using example problems and solutions.
