Please answer all subparts for like either dislike is ready. Thanks A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data:Open-circuit test: 433 watts, while the test is carried out at rated voltage.Short circuit test: 434 watt, while the test is carried out at rated current.for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated loadQuestion 6A 3-phase, 230 V, 30 KVA, 0.9 PF(lag) load is supplied by three 10 KVA, 1330/230 V, and 60 Hz transformersconnected in YA. The transformers are supplied from a 3p source through a 3p feeder whose impedance is3+14 2 per phase. The equivalent impedance of one transformer referred to on the low-voltage side is0.3+j0.3 02. Determine:The supply voltage if the load voltage is 230 V.The % voltage regulation

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A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load

A single-phase, 2,959 VA, 2200/220 transformer has the following open circuit and short circuit test data: Open-circuit test: 433 watts, while the test is carried out at rated voltage. Short circuit test: 434 watt, while the test is carried out at rated current. for a unity power factor, calculate the PERCENT transformer efficiency at 2% of the rated load

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9P

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Similar questions

An ideal transformer has no real or reactive power loss. (a) True (b) False
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A single-phase l0-kVA,2300/230-volt,60-Hz two-winding distribution transformer is connected as an autotransformer to step up the voltage from 2300 to 2530 volts (a) Draw a schematic diagram of this arrangement, showing all voltages and currents when delivering full load at rated voltage. (b) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of this kVA rating is transformed by magnetic induction? (C) The following data are obtained from tests carried out on the transformer when it is connected as a two-winding transformer: Open-circuit test with the low-voltage terminals excited: Applied voltage =230V, input current =0.45A, input power =70W. Short-circuit test with the high-voltage terminals excited: Applied voltage =120, input current =4.5A, input power =240W. Based on the data, compute the efficiency of the autotransformer corresponding to full load, rated voltage, and 0.8 power factor lagging. Comment on why the efficiency is higher as an autotransformer than as a two-winding transformer.
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