Three-Phase Circuits:

A design of three-phase AC circuits lends itself to a more efficient method of generating and utilizing an AC voltage.

STATE the reasons in which three-phase power systems are used in the company.

Given values for voltage, power and current factor in a three-phase system, CALCULATE the following:

a. Real power

b. Reactive power

c. Apparent power

Given a diagram of a wye- or delta-connected three- phase system and DESCRIBE the voltage/current relationships of the circuit.

 STATE the indications of an unbalanced load in a three- phase power system.