A single phase transformer rated 30 kVA, 1200/120 V is connected as an autotransformer to supply 1320V from a 1200 V bus (a) Draw a diagram of the transformer connections showing the polarity marks on the windings and directions chosen as positive for current in each winging so that the currents will be in phase. (b) Mark on the diagram the values of rated rated in the windings and at the input and output. (c) Determine the rated kVA of the unit as an autotransformer (Ctr) -

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: Consider Figure 1 of the text. For an ideal phase-shifting transformer, the impedance is unchanged…

A: Referring to the given hints, the impedance of the secondary side seen from the primary side:

Q: a) What is the minimum required transformer rating in kVA? b) By what percentage could the required…

A: It is given that:

Q: Q1: Fill in the blanks for the following: 1- The transformer called step-up transformer, when the…

A: 1) in step up transformer the primary winding Voltage is more than the secondary Voltage and hence…

Q: A typical single-phase transformer has a certain value of voltage regulation when connected to the…

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Q: 3.57 A two-winding single-phase transformer rated 60 kVA, 240/1200 V, 60 Hz, has an efficiency of…

A: Transformer : A transformer is a stationary device that transmits electrical energy from one circuit…

Q: b) A single-phase transformer with 10: 1 turns-ratio and rated at 50 kVA, 2400-V/240-V, 50-Hz is…

A: (b): Given in the question: Turns ratio: N1N2=101 Voltage on the primary side is: V1 = 2400V Voltage…

Q: Differentiate an ideal transformer and a practical transformer. Explain the ideal and practical…

A: Before differentiate between ideal and practical transformer let us understand the basics of simple…

Q: Along with suitable vector show, how the transformer behaves on load and no load condition

A: Transformer No-Load condition The ammeter above will indicate a small current flowing through the…

Q: A single-phase 100 kVA, 2400/240 V, two-winding transformer will be used as a step-down…

A: single-phase Two winding transformer step down  100 kVA, 2400/240 V,  auto-transformer Step down…

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: 4.6 A 60 Hz, 75 kVA, 2400/240 V, single-phase transformer is used to step down the voltage of a…

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Q: - When a 100-kVA single-phase transformer was tested in this way, the following data were obtained:…

A:

Q: With the neat diagram explain the construction and working of Sumpner’s or Back –to-Back test of…

A: Step-1   Construction   The Sumpner’s or back-to-back test of a single phase of a transformer…

Q: The values ​​of a phase measured from the no-load (no load) operation and short circuit test of a…

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Q: single-phase transformer has a voltage regulation of 10% when delivering full load at unity power…

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Q: We wish to connect a 6 kVA, 120/240 V transformer as an autotransformer to a 120 V source to supply…

A: "Since you have posted a question with multiple sub parts we will solve first three subpart for you…

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

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Q: A single-phase transformer is rated at 30 kVA. The transformer has full-load copper losses of 700 W…

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Q: b- What is the main differences in the design of Pulse transformer and Isolating transformer. c-…

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Q: 1- The transformer called step-up transformer, when the number of greater than winding winding. 2-…

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Q: A 15-kVA, 2400/240-V transformer is to be tested to determine its excitation branch components, its…

A: Solution a)- Equivalent circuit of the transformer referred to high voltage side-

Q: a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the…

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Q: (a) An ideal single-phase transformer has a rated voltage of 345 kV at the high side and 23 kV at…

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

A: It s given that: KVA=60V1V2=2401200f=60 Hzcosϕ=0.8 V1V2Auto=2401200

Q: In a 1-phase transformer of 20 KVA, 2000/200 volts, the iron and copper losses are 400 W and 500 W…

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Q: We would like to connect a 6 kVA, 120/240 V transformer as an autotransformer to a 120 V source to…

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Q: Write down the construction and working of a two-winding step-up core-type transformer with the help…

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Q: Illustrate the equivalent circuit of this transformer referred to the high voltage side of the…

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

A:

Q: 1- The transformer called step-up transformer, when the number of winding. winding greater than 2-…

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Q: Power transformer divided into two categories which are dry type and oil-immersed transformer, with…

A: You have asked multiple independent questions. We are authorized to answer one question at a time.…

Q: Determine the magnitude of the series impedance parameters of Transformer(Req ,Xeq) referred to the…

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Q: In the single-phase, three- winding, transformer, the primary current is equal to lo at the…

A: In this question we need to choose a correct option

Q: 4- When a 100-kVA single-phase transformer was tested in this way, the following data were obtained:…

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Q: Consider a power transformer having a single primary winding with a nominal voltage of 50 connected…

A: Solution

Q: 75 kVA, 2400/4800 V, 50 Hz one-phase two-winding transformer will be connected as auto transformer…

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Q: Find the elements of the equivalent circuit relative to the secondary of a single-phase transformer.…

A: Given: The no-load voltages in the primary and secondary circuits are 200 volts and 400 volts,…

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

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Q: ratio

A:

Q: The nameplate on a 25-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of…

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Q: Example 7. A transformer has a primary winding of 800 turns and a secondary winding of 200 turns.…

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Q: A 15-kVA, 2300/230- Question-2 !* V transformer has the following resistances and leakage…

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Q: Calculate the equivalent series impedance of the transformer as referred to the high-voltage…

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Q: A single-phase transformer is rated at 50 kVA. The transformer has full-load copper losses of 300 W…

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Q: single-phase 50-kVA, 2400/240-volt, 60-Hz distribution transformer is used as a step-down…

A:

Q: A 200/100 V, single-phase transformer is rated 10 kVA. If this transformer is connected as an…

A: It is given that: For single-phase transformer: V1=200 VV2=100 VS1-ϕ=10 KVAf= 50 Hz

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.