A 12KVA, 1200/400 V, single-phase, 50Hz transformer has the following test results: Short Circuit test (LV side): Vsc=30 V, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc-80 W Find the following:

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A 12KVA, 1200/400 V, single-phase, 50HZ transformer has the following test results:
Short Circuit test (LV side): Vsc=30 v,
Open Circuit test (HV side):
V1=1200V, 10=1.2A, Po=70 W
Isc=22 A, Psc=80 w
Find the following:
1). Equivalent resistance of the transformer referred to as LV side.(Req2).
2) Equivalent leakage reactance (Xeq2).
3). Calculate the magnitude secondary voltage JE2| to keep the secondary
terminal voltage 400 V at full load and 0.8 power factor lagging.
4). Voltage Regulation of the transformer at full load and 0.8 power factor
lagging.in%
5). Efficiency of the transformer in %
Transcribed Image Text:A 12KVA, 1200/400 V, single-phase, 50HZ transformer has the following test results: Short Circuit test (LV side): Vsc=30 v, Open Circuit test (HV side): V1=1200V, 10=1.2A, Po=70 W Isc=22 A, Psc=80 w Find the following: 1). Equivalent resistance of the transformer referred to as LV side.(Req2). 2) Equivalent leakage reactance (Xeq2). 3). Calculate the magnitude secondary voltage JE2| to keep the secondary terminal voltage 400 V at full load and 0.8 power factor lagging. 4). Voltage Regulation of the transformer at full load and 0.8 power factor lagging.in% 5). Efficiency of the transformer in %
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