The Generator transformer is Select one: a. One-one transformers b. Step-up transformers c. Step-down transformers d. Auto-transformers
Q: 1- The transformer called step-up transformer, when the number of. greater than winding winding.
A: As per our policy i have attempted only one question Step-up transformer: Step up transformer is a…
Q: State the differences in the shell type and core type transformer in short
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Q: Explain in short note How transformer works?
A: Given Working of Transformer
Q: 1. What is the difference between power transformer and distribution transformer in core losses and…
A: Power transformers are generally high voltage transformers which are used stepping up and down of…
Q: 2. What is unique about the High Voltage Test Transformer?
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Q: B/ Short answer questions 1- What is the function of instrument transformers? 2- What are the…
A: In this question we will write about instrument transformers, core type and shell type…
Q: Explain the working principle of "Transformer" as usual Electromagnetic induction application.
A: Transformer: An item utilized in the transfer of electric energy is a transformer. AC current is…
Q: Draw the construction diagram of the core type transformer
A: In core type transformer both the primary and the secondary windings are placed on the side limbs…
Q: Why are the low voltage winding short-circuited and high voltage excited during the short-circuit…
A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…
Q: Name two types of Transformer equivalent circuit and then compare them.
A: Since both the question are not interrelated as per the guidelines of Bartley we supposed to answer…
Q: Why does the power factor of a load affect the voltage regulation of a transformer
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Q: 2-Draw the equivalent circuit of single-phase Transformer ,and write each value on it. ?
A: Equivalent circuit of the single phase transformer is given below
Q: What is a transformer and explain how does it works
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: what is synchro and conventional transformer, and how do they differ from each other?
A: Synchro transformer are three phase transformers have rotating primary winding which can rotate to…
Q: what is the Formulae of short test of single phase transformer and Formulae to determine efficiency…
A: If, Wsc = Full load copper losses Isc = short circuit current Vsc = short circuit voltage Equivalent…
Q: Short circuit test on a single phase transformer is performed to determine_____________ a.…
A: Need to Find the correct option
Q: When rated voltage at rated frequency is applied to a single phase transformer the hysteresis and…
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Q: PRINCIPLE OF OPERATION OF A SINGLE-PHASE IRON CORE TRANSFORMER.
A: Given: PRINCIPLE OF OPERATION OF A SINGLE-PHASE IRON CORE TRANSFORMER. According to question:…
Q: Define Mutual Induction and how describe how a transformer operates.
A: Here is the explanation
Q: Name three types of transformer and brief about each.
A: 1. Step Up Transformer and Step Down Transformer: Generally these Step up and step down transformers…
Q: A certain single-phase transformer with full-load copper loss and core loss is loaded at full load.…
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Q: What are the objectives of implementing a short circuit test on a single phase transformer?
A: Given What are the objectives of implementing a short circuit test on a single phase transformer
Q: What is the difference in connection between a voltage transformer and a current transformer?
A: We know that the electrical instruments are not directly connected to the control apparatus or the…
Q: Is the turns ratio of a transformer the same as the ratio of voltages across the transformer? Why or…
A: The turn ratio of a transformer, the same as the voltage across the transformer is described below.…
Q: 1.Compute the Core losses(no-load loss) of the Transformer.?
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Q: )A. Draw approximate transformer model into all quantities of a secondary referred to primary.…
A: Transformer model Equivalent transformer circuit diagram:- Secondary referred to primary side
Q: .Compute the Core losses(no-load loss) of the Transformer. ?
A: As per our policy i have attempted only one question. The basic flow chart of types of losses in…
Q: 4- The step-down transformer ?
A: Electrical machines can be either generator, motors or transformers. They can be either Ac machines…
Q: Assume a single phase transformer with primary and secondary winding. Explain what would happen if a…
A: Transformer is a static device which is used to step up/down the voltage or current level without…
Q: Which is better, one transformer is used to feed the load or two transformers? Why?
A: Multiple transformers can be connected to reduce the size which improves surface area to volume…
Q: What are the reasons for using transformer oil in power transformers and why are mineral oils…
A: The explanation is as follows.
Q: 5-Questions : 1- What are the advantages of Transformer Tests?
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: transformer the core loss is 100 watt at 40 Hz and 72 watt at 37 Hz, then eddy current and…
A: In this question , we have to find out Eddy current losses and hysteresis losses...
Q: Questions: 1. Why a short circuit test is done on the transformer with LV winding shorted and supply…
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Q: Which transformer is used for welding application? Explain the operation in detail with diagram.
A: Need to find which transformer is used for welding application
Q: TRUE or FALSE: If a transformer is loaded from full-load value to half-load value, then the amount…
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Q: _________________________________ transformer is called isolation transformer. 1:1 Three phase core…
A: Transformer is a device used to step up or step down the voltage in transmission system . For step…
Q: What are the objectives of conducting an open circuit test on single phase transformer?
A: In transformer its important to judge its performance parameters such as efficiency, regulation etc.…
Q: Draw a complete circuit diagram describing a transformer
A: Electrical machines can be either generator, transformers or motors. They can be either Ac machines…
Q: Which is better to use a transformer with the same load capacity or use two transformers?
A: Use two transformer is better. It is economical to install transformer in parallel instead of single…
Q: 4. Why the efficiency of the transformer is high at half load compared to full load?
A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…
Q: 1.Compute the Core losses(no-load loss) of the Transformer. ?
A: As per the policy, I am attempting the only first question. Please ask the second question…
Q: List the materials used for construction of following parts (1) commutator (2) Transformer core (3)…
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Q: 1 Normal Styles Paragraph Question 3 a) What loss does laminating the iron core of a transformer…
A: In this question we will write about what loss in transformer reduces by lamination.....
Q: 2- Why the transformer core made from lamination plates?
A: We are authorized to answer the first question since the exact one wasn’t specified. Please submit a…
Q: 1- What is the purpose of laminating the core in a transformer?
A: As per bartleby guideline for more than one question asked only first is to be answered please…
Q: When rated voltage at rated frequency is applied to a single phase transformer, the hysteresis loss…
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- In per-unit equivalent circuits of practical three-phase transformers, under balanced thr-phase operation, in which of the following connect ions would a phase-shifting transformer come up? (a) Y-Y (b) Y- (c) -For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) NoFor an ideal 2-winding transformer, the ampere-turns of the primary winding, N1I1 is equal to the ampere-turns of the secondary winding, N2I2 (a) True (b) False
- Using the transformer ratings as base quantities. work Problem 3.14 in per-unit.The leakage reactance of a three-phase, 300-MVA,230Y/23-kV transformer is 0.06 per unit based on its own ratings. The Y winding has a solidly grounded neutral. Draw the per-unit equivalent circuit. Neglect the exciting admittance and assume the American Standard phase shift.Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance Xeq=0.10perunit, are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
- Rework Problem 3.14 if the transformer is delivering rated load at rated secondary voltage and at (a) unity power factor, (b) 0.8 power factor leading. Compare the results with those of Problem 3.14. -In developing per-unit circuits of systems such as the one shown in Figure 3.10. when moving across a transformer, the voltage base is changed in proportion to the transformer voltage ratings. (a) True (b) FalseWith the American Standard notation, in either a Y-or-Y transformer, positive- sequen quantities on the high-voltage side shall lead their corresponding quantities on the low-voltage side by 30. (a) True (b) False
- Three single-phase two-winding transformers, each rated 25MVA,54.2/5.42kV, are connected to form a three-phase Y- bank with a balanced Y-connected resistive load of 0.6 per phase on the low-voltage side. By choosing a base of 75 MVA (three phase) and 94 kV (line-to-line) for the high-voltage side of the transformer bank, specify the base quantities for the low-voltage side. Determine the per-unit resistance of the load on the base for the low-voltage side. Then determine the load resistance RL in ohms referred to the high-voltage side and the per-unit value of this load resistance on the chosen base.Consider a bank of this single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, 13.8-kV feeder. The low-voltage terminals are connected to a three-phase substation load rated 2.0 MVA and 2.5 kV. Determine the required voltage, current, and MVA ratings of both windings of each transformer, when the high-voltage/low- voltage windings are connected (a) Y-, (b) -Y, (c) Y-Y, and (d) -.Three single-phase two-winding transformers, each rated 3kVA,220/110volts,60Hz, with a 0.10 per-unit leakage reactance, are connected as a three-phase extended autotransformer bank, as shown in Figure 3.36(c). The low-voltage winding has a 110 volt rating. (a) Draw the positive-sequence phasor diagram and show that the high-voltage winding has a 479.5 volt rating. (b) A three-phase load connected to the low-voltage terminals absorbs 6 kW at 110 volts and at 0.8 power factor lagging. Draw the per-unit impedance diagram and calculate the voltage and current at the high-voltage terminals. Assume positive-sequence operation.
