Sumpner's test on two identical transformers
16:46
Polarity & Ratio Tests of a single phase transformer
12:21
Sumpner's Test Of Transformer | Back To Back Test || Latest Update 2018
8:25
open circuit test and short circuit test on single phase transformer
7:14
Sumpners test
12:52
Expt 2 Sumpner's test on similar transformer session2a
11:17
Make a 12v Battery charger with auto cut off, using UPS Transformer
12:06
Experiment 2. Parallel operation on two dissimilar transformers
15:34