Question

Balanced three-phase systems with positive sequence do not have zero sequence and negative-sequence components.

(a) True

(b) False

Short answer

The correct option is (a): True.

Step-by-step solution

The balanced electrical system.

An electrical system is said to be balanced when the magnitude of voltage or current of all three phases are equal, and the phase angle of the three phases differs from each other by 120 degrees.

If the balanced voltage is supplied in an identical impedance system, the current is also balanced.

Determine whether the balance system have zero sequence and negative sequence component.

The balanced three-phase system is symmetrical and has an equal magnitude. Therefore, the zero and negative sequence components become zero, and the balance system has only a positive sequence component. The positive sequence network directly can be obtained.

Therefore, the given statement is True.