120/480 V, 10 kVA two-winding transformer is to be used as an auto-transformer to supply a 480 V circuit from a 600 V source. When it is tested as a two-winding transformer at rated load, unity power-factor, its efficiency is 0.979. Determine its percent efficiency as an auto-transformer at full-load, with 0.85 power-factor lagging.

Q: 7- The Full load. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)…

A: In this question we need to find loading of the transformer at which maximum efficiency occurs and…

Q: The primary and secondary windings of a 500 kVA transformer have resistances of 0.44 Ω and 0.0027 Ω,…

A: The solution is given below

Q: 2. A single-phase transformer has a rating of 100KVA, 7200V/600V, 60HZ. a. If it is reconnected as…

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Q: A 4 MVA, 66/13.2 Kv, 50 Hz. Delta star connected Three phase transformer has a primary resistance…

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Q: ABB company manufactures 44 kVA, 2200/220 V conventional transformer. Using this transformer, design…

A: In autotransformer, the same winding works both primary and secondary. AB- is known as series…

Q: 630kVA 31500/400 DY 50Hz transformer has no load and short circuit tests power measurements are…

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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: Q4:A/The primary and secondary windings of a 30 kVA 76000/230, V, 1-phase transformer have…

A: This question belongs to electrical machine . It is based on the short circuit test of transformer .…

Q: II. , The parameters of the equivalent circuit of a 150-kVA, 22000/400-V transformer are: R = 0.3 n…

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Q: A 10-kVA, 2000/400-V, single-phase transformer has resistances and leakage reactances as follows :…

A: The information we have :   Primary voltage, V1 = 2000 V Secondary voltage, V2 = 400 V So,…

Q: A 1000-VA 380 / 110 V conventional transformer is to be used to supply power from a 490-V source to…

A: From the given data of normal transformer, KVA=1000 VAVP=380 VVS=110 V To the Auto-transformer…

Q: The Full load. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)…

A:

Q: 1- A 200-kVA transformer has an efficiency of 98 % at full-load. If the maximum efficiency occurs at…

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Q: The rating of current transformer is given as 200/5A 5P10 20VA. Assume that the secondary resistance…

A: Given CT secondary resistance =Rc t =0.12 Ω from CT data 200/5A 5P10 20VA Sn =20 VA I=5 A Fn=10

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: I need the answer as soon as possible

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Q: Q) A 120-kVA, 6,000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W. The maximum…

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Q: A 20kVA, single-phase transformer is tested on both open-circuit and short-circuit conditions,…

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Q: A 200-KVA transformer has an efficiency of 98 % at full-load. If the maximum efficiency occurs at…

A:

Q: A 230-kVA, 2300/230-V, 60-Hz, step-down, two-winding transformer has the following parameters RH =…

A: Given data: S=230 kVARH=1.2 ΩRL=12 mΩXH=3 ΩXL=30 mΩRcH=2 kΩXmH=1.8 kΩVp=2300 V

Q: امتحان مکائن Q) A 120-kVA, 6,000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W. The…

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Q: The following results were obtained on a 50 kVA transformer. Open circuit test – primary voltage,…

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

Q: Q2] The efficiency of a 6600/384V, 200kVA, 1-phase transformer is 97.5% at full load 0.8 power…

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Q: 10- A 10-KVA, 500/250-V, single-phase transformer has its maximum efficiency of 94 % when delivering…

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Q: A 1000-VA, 230/115-V traformer has been tested to determine its equivalent circuit. The results are…

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Q: A 20-kVA, 8000:480-V distribution transformer has the following resistances and reactances: Rp= 32…

A: Note: We are authorized to answer three subparts at a time, since you have not mentioned which part…

Q: An ideal transformer is rated to deliver 460 kVA at380 V to a customer, as shown in Figure.a. How…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: (a) The efficiency of a 320 KVA, single phase transformer is 98.5 % when delivering full load at…

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Q: A transformer rated at 1000 kVA is operating near capacity as it supplies a load that draws 900 kVA…

A: According to the question, we have to find, real power delivered to the load and how mu ch…

Q: A 20-kVA, 440/220 V, 1-phase, 50 Hz transformer has iron loss of 324 W. The Cu loss is found to be…

A: A 20-kVA, 440/220 V, 1-phase, 50 Hz transformer has iron loss of 324 W. The Cu loss is found to be…

Q: For a 150 kVA, 2400/240 V transformer, the equivalent circuit parameters are given as R1 = 0.2 Ohm,…

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Q: A 2.4-kVA, 2400/240-V, 50-Hz, step-down transformer has the following parameters: R, = 1.5 a, X, =…

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Q: A 500kVA transformer has an open circuit test of 600W and the full load short circuit test of 700W,…

A: In a transformer, the open circuit test gives total iron loss in the transformer which is 600 W and…

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

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Q: 2- Find the efficiency of a 150 kVA transformer at 25 % full load at 0.8 p.f. lag if the copper loss…

A: Given, kVA rating, S = 150 kVA Factor of load, x = 25 % = 0.25 Power factor, cosϕ=0.8 Copper loss,…

Q: (b) The followings are the reading of the test on a transformer. Transformer rating 10 kVA 240/480…

A: In this question,  Transformer rating is given 10kVA, 0.866Power factor, 240/480V Open and short…

Q: A 1000-VA, 230/115-V traformer has been tested to determine its equivalent circuit. The results ar…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

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: Q1 Calculate the daily efficiency of a single-phase transformer with an output capacity of 350 kVA…

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Q: TRUE or FALSE: If a transformer operates at maximum efficiency, then the power factor is at unity

A: condition for maximum efficiency is copper losses are made equal to iron losses .  and maximum…

Q: Determine the efficiency of a 150 kVA transformer at 50% of full load and 0.8 power factor lagging…

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Q: Q1 Calculate the daily efficiency of a single-phase transformer with an output capacity of 350 kVA…

A: The solution can be achieved as follows.

Q: A 15 kVA, 6000/415 V transformer is to be tested to determine its excitation branch components, its…

A: As per the guidelines of Bartley we supposed to answer first three subpart only for solution of…

Q: Example: A 50 kVA distribution transformer has iron loss of 600W and full-load copper loss of 700w.…

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Q: Q1 The oil test condition analysis is the ultimate starting point for any HV transformer assessment.…

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Q: 1. An ideal transformer with N = 2400 and N2 400 is connected with an impedance Z2 across winding 2,…

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Q: A 10-KVA, 500/250-V, single-phase transformer has its maximum efficiency of 94 % when delivering 90…

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Q: 5) The maximum efficiency of a 100 kVA, 6600/240 V, 60 Hz single phase transformer occurs at half…

A: The solution is given below

Q: 1. A 5-kVA, 110/110-V, single-phase, 50-Hz transformer has full-load efficiency of 95% and an iron…

A: Given:5 kVA, 110-110V, single phase, 50 Hz transformer,full load efficiency of 95%, Iron loss,…

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.