AC machines are motors that convert ac electric energy to mechanical energy and generators that convert mechanical energy to ac electric energy. The two major classes of ac machines are synchronous and induction machines. The field current of synchronous machines (motors and generators) is supplied by a separate dc power source while the field current of induction machines is supplied by magnetic induction (transformer action) into the field windings.

This free application serves to both engineering students and professionals.

Some of topics Covered in this application are:

BASIC AC THEORY
COMPLEX NUMBERS
REACTANCE AND IMPEDANCE -- INDUCTIVE
REACTANCE AND IMPEDANCE -- CAPACITIVE
REACTANCE AND IMPEDANCE -- R, L, AND C
RESONANCE
MIXED-FREQUENCY AC SIGNALS
FILTERS
TRANSFORMERS
POLYPHASE AC CIRCUITS
POWER FACTOR
AC METERING CIRCUITS
AC MOTORS
TRANSMISSION LINES