A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-ampere transformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3 phase, 4 wire delta-connected secondary. Full load current of the primary is 360 amps. What is the full-load current in the primary?
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A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-ampere transformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3 phase, 4 wire delta-connected secondary. Full load current of the primary is 360 amps. What is the full-load current in the primary?
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- Please explain each stepTwo 11,000/2,200-V, 1-phase transformers are connected in parallel to supply a total load of 200 at 0.8 p.f. lagging at 2,200 V. One transformer has an equivalent resistance of 0.4 ohms and equivalent reactance of 0.8 ohms referred to the low-voltage side. The other has equivalent resistance of 0.1 ohms and a reactance of 0.3 ohms. Determine the current and power supplied by each transformer.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-ampere transformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wire delta-connected secondary. For problems 1 through 4 show calculations and/or source of information. What is the full-load current in the primary? What is the full-load current in the secondary? What is the proper rating of the fuses to install for overcurrent protection of the secondary? What is the kilovolt-ampere of the bank if one of the transformers is removed? Sketch the secondary connections, and indicate where a 120-volt load could be connected.
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- If the secondary side of a dual-voltage single phase transformer, as per figure 1, were to be connected in series, the rated output current would be equal to the -A- current rating of the individual coils, B- sum of the current rating of the individual coils, C- either "a" or "b", D- neither "a" nor "b". If secondary side of the a dual-voltage single phase transformer, as per figure 1, were to be connected in paralle, the rated output current would be equal to the A- current rating of the individual coils, B- sum of the current rating of the individual coils, C- either "a" or "b", D- neither "a" nor "b". The poles of a magnet tend to be____________. A - at the ends of the magnet, B- in the middle of the magnet, C -all around the magnet, D- none of the above.Two transformers A and B of different ratings but equal voltage ratios share a load of 900 kVA at 0.8 power factor lagging at 400 V by operating in parallel. Transformer A has a rating of 600 kVA, resistive drop of 1% and reactance drop 5%. Transformer B has a rating of 300 kVA, resistive drop of 1.5% and reactance drop of 4%. Calculate the load shared by each transformer and the power factor at which it is working.A Single-phase transformer has a turns ratio 1: 2, and is connected to a purely resistive load as shown in the figure. The magnetizing current drawn is 1 A, and the secondary current is 1 A. If core losses and leakage reactances are neglected, the primary current is 1:2 llllllll A
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