DC Motor Efficiency: Why Does Efficiency Plot Look Like Parabola?

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The discussion focuses on the efficiency plot of DC motors, specifically why it resembles a parabola. Participants highlight the importance of understanding factors affecting DC motor efficiency, including air resistance losses that become significant at higher speeds. One user mentions conducting a Google search to gather information, confirming the availability of valuable resources. The conversation emphasizes the relationship between motor speed and efficiency, contributing to the parabolic shape of the efficiency curve. Overall, the efficiency of DC motors is influenced by various operational factors, particularly at different speeds.
George444fg
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So I am doing an experiement about DC motors, and I would like to know why the efficiency plot looks like a parabola. What is the structure behind that. Thank you in advance
 
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George444fg said:
So I am doing an experiement about DC motors, and I would like to know why the efficiency plot looks like a parabola. What is the structure behind that. Thank you in advance
What have you found so far in your searching? I did a Google search on what affects dc motor efficiency and got lots of good hits. Have you tried that search yet? :smile:
 
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berkeman said:
What have you found so far in your searching? I did a Google search on what affects dc motor efficiency and got lots of good hits. Have you tried that search yet? :smile:
To be honest I did it simultaneously, and obviously at the end I found out what I was seeking . Thank you
 
Great! Yeah, there's lots of good info out there. I didn't realize that air resistance losses were significant at higher motor speeds...
 

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