engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electronic Mechanic Electric Components Transformers and 3 Phase Systems
An ideal voltage step up transformer with 1:4 turns ratio has 120 V across 100 ohm load resistor at the secondary. What will be primary current?
1
1.2 A
2
4.8 A
3
0.3 A
4
1.8 A