The lesson of electric machines and drivers - transformer questions

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Discussion Overview

The discussion revolves around questions related to a single-phase transformer, including calculations for winding ratio, nominal currents, and transformed resistance. The context is primarily educational, with a focus on homework assistance and understanding basic transformer concepts.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • Participants inquire about the winding ratio of the transformer, nominal primary and secondary currents, and the transformed value of the loading resistor.
  • One participant suggests that the questions posed are basic and implies that the original poster should be able to answer them with prior reading on transformers.
  • The original poster confirms that the questions are for schoolwork and expresses difficulty in solving them, requesting assistance.
  • Another participant reiterates that they do not provide solutions for schoolwork and encourages the original poster to refer to their course materials or online resources for help.
  • There is a suggestion to use Google for specific terms like "winding ratio" if the textbook does not provide adequate explanations.

Areas of Agreement / Disagreement

Participants generally agree that the questions are basic and that the original poster should engage with their course materials. However, there is no consensus on providing direct solutions to the homework questions, leading to a lack of resolution regarding the original poster's request for help.

Contextual Notes

The discussion highlights a reliance on prior knowledge and course readings, with participants noting that the questions should be manageable for someone familiar with the subject. There is an implicit assumption that the original poster has not fully engaged with the necessary educational resources.

mehmetemre
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the lesson of electric machines and drivers -- transformer questions

question: the data of a single phase transformer are as following;
nominal primary voltage U1n= 230V
nominal secondary voltage U2m= 12V
line frequency f= 50 Hz
apparent power S=50 VA
loading resistor on secondary side is RL=3ohm
strayed field self induction coefficient in the simplified equivalent circuit Ls=Ls1+Ls2=0.06 H ?

winding ratio of transformer N1/N2 ?
nominal primary current I1n?
nominal secondary current I2n?
primary side transformed vaue of the loading resistor R'2?
 
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mehmetemre said:
question: the data of a single phase transformer are as following;
nominal primary voltage U1n= 230V
nominal secondary voltage U2m= 12V
line frequency f= 50 Hz
apparent power S=50 VA
loading resistor on secondary side is RL=3ohm
strayed field self induction coefficient in the simplified equivalent circuit Ls=Ls1+Ls2=0.06 H ?

winding ratio of transformer N1/N2 ?
nominal primary current I1n?
nominal secondary current I2n?
primary side transformed vaue of the loading resistor R'2?

Welcome to the PF.

Is this for schoolwork? What reading have you done so far about transformers. The questions you ask above are very basic, and if you have done any reading at all about transformers, you should be able to answer them yourself. :smile:
 
electric machine questions

yes this is a schoolwork and I still can't solve it, if you can solve it for me I would be appreciate,,
please help me about that because I will have an exam 2 days later in 19 june

thanks again
 
mehmetemre said:
yes this is a schoolwork and I still can't solve it, if you can solve it for me I would be appreciate,,
please help me about that because I will have an exam 2 days later in 19 june

thanks again

We do not do your schoolwork for you. Especially schoolwork that is this easy if you will just do your course reading. You can also go to wikipedia.org and search on transformers. The basic information you need is on their main transformer page.
 
Type "winding ratio" into google if your textbook doesn't explain it.
 

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