engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electronic Mechanic Electric Components Transformers and 3 Phase Systems
The turn ratio of a transformer is 20:1. If a load of 10 Ω is connected across he secondary, what will be the effective resistance seen looking into the Primary?
1
2 kΩ
2
4 kΩ
3
8 kΩ
4
32 kΩ