630kVA 31500/400 DY 50Hz transformer has no load and short circuit tests power measurements are given as 1kW and 20kW respectively. Under the fourth of the nominal load with 0,85 capacitive power factor, calculate the efficiency of the transformer at nominal voltage as %?

Q: A single-phase transformer rated 75kVA, 8000/240V is given the short circuit test. With the…

A: Rated current in primary side =75*1038000=9.375 amp Short circuit test is done with secondary side…

Q: Exercise 2 Determine the voltage drop through a 120KVA, 3300-400Y V, three-phase transformer having…

A: The solution is given below

Q: In a 30kVA, 2000/220V power transformer, the iron and full load copper losses are 400W and 450W…

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Q: A 240/120V, 60HZ ideal transformer is rated at 5KVA. 1) Calculate the a-ratio 2) Calculate the rated…

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Q: A 40KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions,…

A: The given parameters are as follows:-

Q: A 1-ph transformer 25KVA, 330/110 V, 50HZ, Req2 = 0.0452 and Xeq2 = 0.0652 draw the Kapp regulation…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: A 20-ohm resistance is connected across the secondary winding of a single-phase power transformer…

A: Given:-Secondary voltage,V2=150vResistance is connected across secondary winding,∴R2=20ΩSupply…

Q: (a) A 220 / 40OV, 11KVA, 50HZ single phase transformer has at full load, a copper load of 145W. If…

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Q: A 1-phase transformer has a no-Load power input of 250W, when supplied at 250V, 50Hz has pf of 0.25.…

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Q: Determine the output power and iron loss.

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Q: A transformer takes a No load current of 0.64 A and power factor of 0.654 lag, when its primary is…

A: First we will draw phasor diagram , from phasor diagram we will find relation between iron loss…

Q: A 10 kVA, 440/110 volt, single-phase transformer has an efficiency of 96% at a rated load of unity…

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Q: A single-phase transformer that has 8000 turns in its primary winding is powered by a voltage of 160…

A: In this question we need to find a secondary voltage of Transformer

Q: A transformer takes a No load current of 0.76 A and power factor of 0.179 lag, when its primary is…

A: To analyze and calculating the parameter of the transformer, it is advised to draw an equivalent…

Q: The maximum efficiency at Full-load and Unity power factor of a 1-phase, 25 kVA, 2000/1000V, 50Hz…

A: At maximum efficiency, iron loss = copper loss Output power at full load = kva rating * power factor…

Q: A 750 kVA transformer is at full load with an overall power factor of 0.65 lagging. The power factor…

A: By adding capacitor we supply reactive power to the load , so source  has to deliver less reactive…

Q: A transformer takes a current of 0.32 A, when its primary winding is connected to a 222V, 50HZ…

A: Dear,as per company guidelines we can answer only one question at a time, kindly post other question…

Q: The equivalent circuit of a 22KVA, 11700/520 V, 60HZ, single-phase loaded transformer when referred…

A: In this question we need to find a voltage regulation of the given transformer.

Q: A 500KVA transformer has iron loss of 500W and copper losses at full load of 2000W. Then at what KVA…

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Q: A single-phase 440/110 V transformer has primary and secondary winding resistance of 0.3 Q and 0.02…

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: A) A single-phase transformer with a ratio of 440/110-V takes a no-load current of 5A at 0.2 power…

A: In the single phase transformer. What is primary current Ip = Io + IS '  Where Is' is secondary…

Q: Problem 1 A 240/120V, 60HZ ideal transformer is rated at 5KVA. 1) Calculate the a-ratio 2) Calculate…

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Q: The maximum efficiency of a 500 – kVA, 3300/500 V, 50 Hz, single phase transformer is 97% and occurs…

A: Given  maximum efficiency ηmax=97% at 3/4 of full load kVA rating of transformer =500kVA impedance…

Q: a) A 600KVA, single phase transformer when working at unity power efficiency 92% at full load and…

A: Given:600KVA , 92% efficiency at full load and half load under unity power factorsAt full load nFL=…

Q: (c) In a 25 KVA, 1000/400 V, 1- o transformer, the core loss and full load copper losses are 200 W…

A: Efficiency = (output power/input power )×100. Input power = output power + iron losses + copper…

Q: A 10 kVA three-phase transformer is loaded with a back power factor of 0.9, while the loading ratio…

A: The given data about the three phase transformer is: Rated kVA S=10 kVA. Operating power factor…

Q: A single-phase transformer of rating 25 kVA, supplies a 12 kW load at power factor of 0.6 lagging.…

A: Referring to the given question, the load supplied is given as 12kW at 0.6 power factor lagging.…

Q: A 402 kVA single phase transformer has an efficiency of 96.4%, when delivering full load at 0.9…

A: Solve as below

Q: A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: A 45KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions,…

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Q: For the 11000/400V, A/Y 3-ph transformer, if the line current in the secondary is 500A calculate the…

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Q: A 1-ph transformer 25kVA, 330/110V, 50Hz, Req2 = 0.04522 and Xeq2 = 0.0650 draw the Kapp regulation…

A: Single Phase Transformer:  An electrical device that accepts single-phase alternating current and…

Q: A 10 KVA, 400 V/200 V single phase transformer with 10% impedance, draws s steady short circuit…

A: Given: A 400 V/200 V single phase transformer with, Power rating, S = 10 kVA Impedance percentage,…

Q: A 600 kVA, 1-ph transformer has an efficiency of 92 % both at full- oad and half-load at unity power…

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Q: In a 25-kVA, 2000/200 V, single-phase transformer, the iron and full-load copper losses are 350 and…

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Q: 4.1 Assume that an ideal transformer used to step down 13.8–2.4kV and that it is fully loaded when…

A: Given:Transormer is ideal,Hence, the i/p KVA = o/p KVAVoltage rating 13.8 kV/ 2.4 kVAlso, o/p KVA =…

Q: A 50KVA, 500/1000V Y-Y Transformer has per phase R=40, X=50, R_= open circuit, X=120k0 refer to high…

A: A 50kVA,500/1000V Y-Y Transformer has per phase Req=4ohm,Xeq=5ohm,Rc=open circuit Xm=120kohm refer…

Q: A transformer having a nameplate rating of 30kVA, 4160/230V, single phase, 60hz with an equivalent…

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Q: A 10-kVA, 450/120V, 50-Hz transformer has the following circuit parameters: R, = 0.12 n, R, = 8.533…

A: As per Bartleby guidelines, since you have posted a question with multiple sub-parts, we will solve…

Q: A 150-kVA simple-phase transformer has a core loss of a 1.5kW and a full-load Cu loss of 2 kW.…

A: In this question we need to find a efficiency of the transformer at the given condition.

Q: An (15-0.X) kVA, 110/440, 60 Hz, two winding transformer has low voltage side resistance of…

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Q: A 4160.240 V single-phase 60 Hz transformer is rated for 95 kVA. It is determined that at full load…

A: Find the efficiency of the transformer.  If iron losses and copper. Losses are given Power factor…

Q: A 230/460-V transformer has a primary resistance of 0.2 ohms and reactance of 0.5 ohms and the…

A: Given: N1N2=230460R1=0.2 ΩX1=0.5 ΩR2=0.75 ΩX2=1.8 ΩI2=15 Acosϕ=0.6 pf lagging

Q: Problem 3: Find the voltage regulation of an ideal 3– o transformer rated as 4160V/480V, 1000KVA,…

A: In the question, What is the voltage regulation  If drop on the outgoing cable =5V. We know voltage…

Q: A 250kVA, single phase transformer is designed to have a resistance of 1.5% and maximum efficiency…

A: Consider the resistance is 1.5%  The kVA is 250 The load is 160 kW The power factor is 0.8 W

Q: The efficiency of a 440/110V, 40kVA, single-phase transformer is 98.77% when delivering full-load at…

A: Single Phase Transformer: A single phase transformer is an electrical device that accepts…

Q: A 35KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions,…

A: The problem is from machine.  The calculation is shown in the next step

Q: A 10KVA, single-phase transformer has a turns ratio of 12:1 and is supplied from a 2.4 kV supply.…

A: Given values are - S=10kVAN1N2=V1V2=121V1=2.4kV

Q: Calculate the percent voltage drop in a 500 KVA transformer having 2% resistance and 4% reactance…

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Q: The maximum efficiency of a 200KVA, 6000/230volt, 50HZ, single phase transformer occurs at half load…

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.