30-kVA, 2200/220-V, 50-Hz distribution transformer is tested for efficiency and regulation as follows : O.C. test( Low voltage side ) : 220 V 4.2 A, 148 W S.C. test ( Low voltage side ) : 86 V 10.5 A, 360 W 1-The working current and resistance component of no-load are.........amper , .........ohm * 2-Efficiency at full-load and half the full-load at 0.8 p.f. lagging current. * 3-Equivalent resistance referred to primary & referred to secondary..........ohm , ..........ohm * 4-Regulation of transformer at 0.5 p.f. lagging current * 5-Equivalent reactance referred to primary & referred to secondary..........ohm , ..........ohm * 6-The magnetizing current and reactance component of no-load are.........amper , .........ohm *
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
30-kVA, 2200/220-V, 50-Hz distribution transformer is tested for efficiency
and regulation as follows :
O.C. test( Low voltage side ) : 220 V 4.2 A, 148 W
S.C. test ( Low voltage side ) : 86 V 10.5 A, 360 W
1-The working current and resistance component of no-load are.........amper , .........ohm *
2-Efficiency at full-load and half the full-load at 0.8 p.f. lagging current. *
3-Equivalent resistance referred to primary & referred to secondary..........ohm , ..........ohm *
4-Regulation of transformer at 0.5 p.f. lagging current *
5-Equivalent reactance referred to primary & referred to secondary..........ohm , ..........ohm *
6-The magnetizing current and reactance component of no-load are.........amper , .........ohm *
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