Consider the following open circuit transformer as shown in figure below which operate at: the voltage sources at no load (Voc)=170 V no load current (Ioc) = 85 m A iron losses power (Poc) = 14 W power factor = cos∅= 0.968 Compute the No load transformer parameter magnetizing (Im) and copper losses current (Ic) , (R0) and (X0)

Q: Excitation arm parameters of 1000V/400V single phase transformer with 15kVA power: Xm = 6kΩ an Given…

A: Given ;1000/400 V1-ϕ transformer with a power 15KVA,Xeq=6 K ohm Re=20 Kohm a)Electrical equivalent…

Q: 1. From first principles, derive the per-phase equivalent circuit of a three-phase transformer…

A: In this section are multipart questions. I have done only one part. A transformer is an electrical…

Q: (b) Discuss about the tap changing transformer and synchronous condenser methods of voltage control…

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Q: Equivalent circuit diagram and electromotive force phasor for the idle operation of a step-up phase…

A: A transformer is a static device, it consist of two winding interlinked by common magnetic circuit…

Q: If the open circuit voltage is 225V and the full load voltage is 200V, then the percentage…

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Q: A l-phase, 10-kVA, 500/250-V, 50-Hz transformer has the following constants: Reactance : primary 0.2…

A: In this question,  We need to determine the reading of the instrument for the open circuit test and…

Q: b) A single phase 50 Hz, transformer with turns ratio of 25:1400 has cross sectional area of 110 cm2…

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Q: apparent power: 15 kVA, primary:500 V, secondary: 220 V, 50 Hz, idle running current: %7 Idle lost…

A: TRANSFORMER: Transformer is a static device which transfers power from one circuit to another…

Q: A single phase, 50-Hz transformer has 80 turns on the primary winding and 400 turns on the secondary…

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Q: The full load voltage drop in a single phase transformer are 2% and 4% due respectively to…

A: Given values are - Voltage dropR%=2%%R=2%Voltage dropX%=4%%X=4%

Q: A 12-kVA, 240/120-V conventional transformer is to be reconnected as auto-transformer to supply…

A: Connect the auto transformer winding as below

Q: Consider the following short circuit transformer as shown in figure below which operate at: the…

A: The solution is given below

Q: When conducting no-load test on a given single-phase transformer, the following test data were…

A: turns ratio=primary voltagesecondary voltage. No load current is sum of magnetizing current+ core…

Q: iii. No-load current 3. If the ratio of V/F has been kept constant and the observed value of…

A: Q.1) Explanation 1)When the frequency is lowered (for slower motor speed), the magnetic field…

Q: If the open circuit voltage is 227V and the full load voltage is 207V, then the percentage…

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Q: ) In a Ideal transformer (assuming no losses),  the magnetizing component of no load current is in…

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Q: . A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV…

A: Given a single phase transformer with the following values   10 KVA ,2400v/120v ,60 Hz  Core loss…

Q: Discuss the relationship between the operating frequency and the transformer size? Through your…

A: Considering the EMF equation of the transformer, E=4.44×f×Bm×N×A Here, E is emf, f is frequency, Bm…

Q: A pure transformer is used to form a step-up autotransformer with common winding of 7200 V and 1400…

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Q: The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60-Hz transformer are to be determined.…

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Q: 9- An 11,000/230-V, 150-kVA, 50-Hz, 1-phase transformer has a core loss of 1.4 kW and full-load Cu…

A: Given, Full load KVA, Sfl=150 kVA Core loss, Pi=1.4 kW Full load Copper loss, Pcu=1.6 kW Power…

Q: We have a transformer designed to operate at 60 Hz. The voltage ratings are 4800 V rms and 240 V rms…

A: Given: A transformer is designed to operate at a frequency: f1=60 Hz New frequency is f2=120 Hz…

Q: 1. The equivalent circuit impedances of a 20-kVA, 800CV240-V, 60-Hz transformer are to be…

A: Since we are allowed to solve only the first question, The below solution contains answer for the…

Q: If the open circuit voltage is 225V and the full load voltage is 214V, then the percentage…

A: Percentage regulation is given by R    R = (VOC - VFL ) / VFL    VOC = Open circuit voltage    VFL =…

Q: A single-phase transformer (assumed to be ideal) with the rated values are given in the figure, is…

A: Two winding transformer rating given S=11KVA Voltage ratings 2200/220V After change in auto…

Q: A 60-Hz single-phase transformer has a turns ratio of 8. The resistances 0.90 2 and 0.05 2 and the…

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Q: The magnetic core of a 100 kVA, 60 Hz core-type transformer is wound with 5268 turns on the HV side…

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

Q: 60 KVA, 415-220 V, 50 Hz transformer I.(exciting current)=2% of the rated current current at 0.75…

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Q: A 10-kVA, 480/120-V conventional transformer is to be reconnected as auto-transformer to supply…

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Q: When conducting no-load test on a given single- phase transformer, the following test data were…

A: Need to find core loss and currents for given transformer

Q: Calculate voltage ratio and turn ratio of a 3-phase transformer with data: VIN=6kV, V2N=400V, Dy,

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A 150 kVA, 2500/250 V, 50 Hz, single phase transformer has a no-load current of 0.75 A and a core…

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Q: (i) Illustrate the assumption of an ideal transformer before formulatioi (ii) Formulate Voltage…

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Q: A 23 KVA, 2300/230 V, 60 Hz step down transformer has the following resistance and leakage reactance…

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

Q: For an ideal 2-winding transformer, the armpere-turns of the primary winding, N1/1, is equal to the…

A: For the magnetic circuit, the magneto-motive force is given as:

Q: The information shown in the table below was obtained when a 60-VA, 120/208 V, 60 Hz transformer was…

A: Given, Power Rating = 60 VA Voltage ratings of the transformer 120/208 V Core loss components from…

Q: What is an autotransformer? What is the main advantage of an autotransformer over a regular…

A: Transformer is a device that transfers power from one circuit to another without changing the…

Q: The following test data were obtained from short-circuit and open-circuit tests of a 50-kVA,…

A: Given data Apparent power is S = 50 kVA Voltage is V = 600 V frequency is f = 60 Hz a) Calculating…

Q: 3/The core of a 300-kVA, 15000/650 V, 50-Hz, 1-ph, core type transformer has across- section of 30…

A: In the given question we note that    The core of   = 300 KVA ,  1500/ 650 V Cross section area is…

Q: A two-winding transformer is rated at 60-kVA, 240/1200-V, 60-Hz. When operated as a conventional…

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Q: Q1: During the separation of transformer core losses experiment: 1. Why should always keep the ratio…

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Q: Justify if in a Yy transformer (without neutral wire on the supply side) there are homopolar…

A: Here it is mentioned that in a three Yy transformer there are homopolar components of fluxes,…

Q: 2. A single-phase, 50-Hz, core-type transformer's no-load voltage ratio is 1,200/440. If the maximum…

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

Q: • Q1: During the separation of transformer core losses experiment: 1. Why should always keep the…

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Q: A transformer on no-load has a core-loss of 20 W, draws a current of 1 A (rms) and has an induced…

A: According to guidelines we need to solve only the first question. According to the question we have…

Q: A 10-kVA, 2300/230-V transformer is to be tested to determine its excitation branch components, its…

A: 10-kVA, 2300/230-V transformer Open and short circuit parameters given Voc = 2300 V Vsc = 48 V Ioc =…

Q: (a) Answer the following questions. (i) Explain briefly the main funetion of a power transformer in…

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Q: A single phase 400 V, 50 Hz transformer has an iron loss of 5000 W at the rated condition. When…

A: Given, A single phase transformer at 400 V, 50 Hz transformer has an iron loss, Pi=5000 W (first…

Q: (b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a…

A: The solution is given below

Q: 5. Write down the equations of a single phase transformer at no-load mode. Give the names of the…

A: Transformer is a static device which is used to step up or down the voltage level or current level.…

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.