For a transformer, operating at constant load current, maximum efficiency will occur at
A. 0.8 leading power factor
B. 0.8 lagging power factor
C. zero power factor
D. unity power factor
Answer:D
For a transformer, operating at constant load current, maximum efficiency will occur at
A. 0.8 leading power factor B. 0.8 lagging power factor C. zero power factor D. unity power factor