engineering recuitment PGCIL Diploma Trainee Mock Test 2024 Electrical Machines Transformer Auto Transformer
In which of the following cases is the use of autotransformer more economical as compared to a two - winding transformer?
1
Voltage ratio is 0.5
2
Voltage ratio is 0.75
3
Voltage ratio is 0.9
4
Voltage ratio is 0.1