Maintenance is a routine and recurring activity of keeping a particular equipment or facility at its normal operating condition so…
As with most of electrical equipment, the key causes of failure of power transformers are either due to electrical failure…
AC generators can be utilized in high precision control systems. The AC generator rotor is rotated by the rotating shaft…
Option 1: With a Toggle Switch Let’s consider a simple three-phase, 480V AC motor control circuit consisting of a contactor,…
Permanent magnet dc motors employ a permanent magnet instead of stationary field winding (as with the case of some other…
Testing is usually performed on DC machines to establish efficiency and power losses. A brake test is a direct technique…
The cycloconverter provides direct ac to ac transformation with control over both the output voltage magnitude and output frequency. It…
Instrument transformers are used in the measurement of voltage, current, energy, and power in ac circuits. The main reasons why…
Introduction The transformer, in simple terms can be defined as the voltage regulator. It helps in stepping up and stepping…
A compound motor is a combination of a series and a shunt-wound motor. Compound-wound motor (long shunt) Compound-wound motor (short…
