Correct option is D
Three-Phase Unbalanced Load:
· In a three-phase system, an unbalanced load occurs when the loads connected to each phase are not equal in magnitude or type (resistive, inductive, or capacitive).
· This unbalance can cause different current magnitudes and phase angles in each phase, leading to different power factors in each phase.
Power Factor:
· The power factor is the ratio of real power (P) to apparent power (S) in a circuit and indicates how efficiently the electrical power is being converted into useful work.
· In a balanced three-phase system, all phases have the same power factor.
· However, in an unbalanced system, each phase can have a different load, resulting in different power factors for each phase.
