During routine tests of a three phase transformer, measurements of DC resistance between winding terminals is noted down. What kind of information can be obtained from the values so noted?

Q: If the secondary side of a dual-voltage single phase transformer, as per figure 1,  were to be…

A: The secondary side of a dual-voltage single phase transformer, as per the figure given in  the…

Q: Answer by true or false * True False while conducting short- circuit on transformer the low voltage…

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

Q: What is the relationship between the power losses and the load current of a power transformer?…

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Q: How do you find the transformer rated current when given the current ratios for both the high…

A: Transformer- Transformer is a passive component which transfers electrical energy or electrical…

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

A: Transformer is the static device it work on the principle of faraday law of mutual inductance. It…

Q: A 800/160V, 55 HZ, 1-phase transformer with cross sectional area of the core is 26 cm? and maximum…

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Q: A single-phase transformer rated at 55 KVA has no load voltage of 241 volts, when the regulation is…

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Q: state the advantages and disadvantages of three phase * transformer connections

A: we need to state the advantages and disadvantages of three phase transformer connections.

Q: A core type transformer operates on 400 / 230 volt, 55 Hz supply. If the cross-sectional area of the…

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Q: A single phase transformer has a voltage transformation ratio of 0.4. The resistance and reactance…

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

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Q: What measures are taken for cooling of the transformer?

A: Cooling of Transformer is the process by which heat generated in the transformer is dissipated to…

Q: What is the condition for the maximum efficiency of the transformer?

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

Q: If the polarity of one transformer is reversed on a delta bank of single-phase transformers that are…

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Q: Belonging to a phase measured from a 220/48 V phase transformer, no-load (no load) operation and…

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Q: (a) A 60-kVA, 4800/2400-V single-phase transformer gave the following test results: Rated voltage is…

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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: (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: What is the type of core material of the transformer?

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Q: 1- The resistance of secondary windings of step-down transformer is resistance of secondary…

A: Need to fill the blank

Q: a) Discuss why a starldelta or delta/star configuration of a three-phase transformer is optimal for…

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Q: Why is it important to know the polarity of each winding of a power transformer before connecting…

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Q: Is AC Adapter a transformer? Yes or no? If yes, what is the usual voltage rating?

A: Question : Is AC Adapter a transformer? Yes or no? If yes, what is the usual voltage rating?…

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: 4- The step-down transformer ?

A: Electrical machines can be either generator, motors or transformers. They can be either Ac machines…

Q: How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a…

A: Solution                   Given data,                           turns ratio =0.1…

Q: What are the various causes of voltage drop in a transformer?

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

Q: A core type transformer operates on 400 / 225 volt, 55 Hz supply. If the cross-sectional area of the…

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

A: In this question , we will find no load equivalent parameters...Core loss current , magnetizing…

Q: Draw the schematic diagram of Potential Transformer and label the parts. Also mention the range of…

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Q: voltage per winding of the 220V/12V, 60 Hz single phase core transformer is 2V. If the maximum flux…

A: We know direct formula of per winding voltage. From that formula we will find out cross section…

Q: the apparent power supplied to the core of transformer?"

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Q: Given this transformer with load, what is the expected phase of the primary and secondary voltage?…

A: The solution is provided in the following section.

Q: Questions: 1. Why a short circuit test is done on the transformer with LV winding shorted and supply…

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

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Q: 4. Why the terms Rm and Xm significant when the transformer is loaded?

A: consider the given question;

Q: What type of transformer is shown below? Note that Vp is the voltage applied to the transformer…

A: In this question , we have given a transformer....We have to find out type of given transformer....

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

A: It is given that: No-load primary voltage=V1=200 VNo-load secondary voltage=V2=400 VFrequency=f=50…

Q: What is the difference between a wye-connected and delta-connected transformer?

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Q: A core type transformer operates on 415 / 230 volt, 55 Hz supply. If the cross-sectional area of the…

A: The number of turns in primary winding is 47. The detailed solution is provided below.

Q: A 1100/170V, 50 HZ, 1-phase transformer with cross sectional area of the core is 30 cm? and maximum…

A: 1100/170V  50Hz frequency single phase transformer Emf= 4.44fN ×flux So no of turns N=?

Q: When secondary is fully loaded, transformer regulation is less than 1 percent. It shows that it is a…

A: This problem is related to the transformer If the secondary is fully loaded, transformer regulation…

Q: Due to the increase in load, what change you saw in the transformer’s output power and voltage…

A: The transformer has a primary and a secondary side. It converts electrical power to electrical power…

Q: Which of the following is the range of excitating current (in percent) of its rated current for a…

A: For non ideal transformer, the primary current that is needed to obtain the core flux and the…

Q: What will happen if proper polarity is taken for granted in paralleling transformer? If voltages are…

A: The polarity of the transformer means the instantaneous direction of the second induced emf. If the…

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…

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.