When a given transformer is run at its rated voltage but reduced frequency, its
A)flux density remains unaffected
B)iron losses are reduced
C)core flux density is reduced
D)core flux density is increased

Question

Quizplus · Accepted Answer

When a transformer is operated at its rated voltage but at a reduced frequency, the core flux density increases because flux density is inversely proportional to frequency (given a constant voltage).

When a Given Transformer Is Run at Its Rated Voltage