Transformer Efficiency: Why Does Direct Loading Not Determine It?

  • Thread starter Thread starter glasgowkizz
  • Start date Start date
  • Tags Tags
    Transformer
Click For Summary

Discussion Overview

The discussion revolves around the efficiency of transformers and why it is not determined by direct loading. Participants explore the implications of transformer efficiency, particularly in the context of large transformers and potential measurement errors.

Discussion Character

  • Debate/contested
  • Homework-related

Main Points Raised

  • Some participants suggest that the high efficiency of large transformers (e.g., 99%) can lead to misleading efficiency calculations due to measurement errors in primary or secondary voltage or current readings.
  • One participant questions the origin of the transformer-related questions, implying they may stem from academic assignments.
  • There is a suggestion that the discussion may not be appropriate for the current forum and should be moved to a Homework Help section.

Areas of Agreement / Disagreement

Participants express differing views on the appropriateness of the forum for the discussion and the implications of transformer efficiency, indicating that multiple perspectives remain without a clear consensus.

Contextual Notes

Participants mention the need for relevant equations and attempts at solutions when discussing homework-related questions, highlighting the importance of context in evaluating transformer efficiency.

glasgowkizz
Messages
7
Reaction score
0
Why is the efficiency of a transformer not determined by direct loading?
 
Physics news on Phys.org
glasgowkizz said:
Why is the efficiency of a transformer not determined by direct loading?

Could you please clarify the question? Also, where are these transformer questions coming from? Are you reading a textbook or online resource about transformers?
 
Probably because large transformers are too efficient.

If a transformer is 99% efficient then an errow of 1.1% in reading primary or secondary volts or amps could give you an efficiency greater than 100%.
 
berkeman said:
Could you please clarify the question? Also, where are these transformer questions coming from? Are you reading a textbook or online resource about transformers?

Our professor gave these questions as an assignment.
 
Carl Pugh said:
Probably because large transformers are too efficient.

If a transformer is 99% efficient then an errow of 1.1% in reading primary or secondary volts or amps could give you an efficiency greater than 100%.

Thanks for your opinion.
 
glasgowkizz said:
Our professor gave these questions as an assignment.

Then these questions belong in the Homework Help forums, either in Intro Physics or Engineering. Please do not post schoolwork questions here in the EE forum.

And you need to post the Relevant Equations and your Attempt at a Solution when posting schoolwork questions here on the PF.

I'll move this thread now, leaving an expiring redirect behind in EE.
 

Similar threads

Transformer exceeding its rated maximum temperature
  • · Replies 5 ·
Replies
5
Views
4K
Engineering Transformer -- find equivalent circuit from efficiency and V.R
  • · Replies 2 ·
Replies
2
Views
2K
Transformer Load Regulation Old Exam Question Help
  • · Replies 6 ·
Replies
6
Views
2K
How Do You Calculate Gear Train Efficiency Based on Load Torque?
  • · Replies 13 ·
Replies
13
Views
8K
Engineering How to calculate the power distribution through this gearbox?
  • · Replies 6 ·
Replies
6
Views
3K
Engineering Maximizing Thread Strength: Stress Analysis on M10 Bolt with 100 kg Load
  • · Replies 3 ·
Replies
3
Views
3K
Delta-Y Connected Load Transformation
  • · Replies 2 ·
Replies
2
Views
2K
Engineering 2nd Degree Inderteminacy for Structure Using Force Method
  • · Replies 3 ·
Replies
3
Views
3K
Engineering How would I solve this using Laplace transformation?
  • · Replies 4 ·
Replies
4
Views
2K
Engineering Calculating Efficiency and Speed of a DC Motor at Half-Load Torque
  • · Replies 13 ·
Replies
13
Views
4K