Does Torque Affect Acceleration in Motors?

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Discussion Overview

The discussion centers on the relationship between torque and acceleration in motors, specifically focusing on the behavior of squirrel cage motors under varying load conditions. Participants explore how applied torque affects motor speed and angular acceleration, referencing experimental observations.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions how torque relates to acceleration in motors, noting an experimental observation where increased torque led to decreased RPM.
  • Another participant asks for clarification on the experiment conducted, seeking more details about the setup and findings.
  • A third participant describes the experiment as involving a squirrel cage motor and examines the relationship between load torque and motor speed.
  • One participant explains that applying more load to the motor results in a decrease in speed, suggesting that while driving torque increases angular acceleration, the load torque opposes it, effectively reducing the net driving torque and speed.
  • There is an invitation for corrections if the explanation does not align with the original inquiry.

Areas of Agreement / Disagreement

Participants express varying understandings of the relationship between torque and motor speed, with some agreeing on the opposing effects of load and driving torque, while others remain uncertain about the implications of their observations.

Contextual Notes

The discussion does not resolve the apparent contradiction between theoretical expectations and experimental results, and it highlights the complexity of torque interactions in motor operation.

Who May Find This Useful

Individuals interested in motor dynamics, experimental physics, or those studying electrical engineering concepts related to torque and acceleration in motors may find this discussion relevant.

xier
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I am wondering how the torque related to its acceleration in a motor! If I am not mistaken, by book, the angular acceleration increases proportional to the torque. But, I have done on an experiment, when i add torque to the motor, its RPM decreased...Please tell me why! Thank in Adv.
 
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Can you describe what kind of experiment you did?
 
Lsos said:
Can you describe what kind of experiment you did?

Experiment of Squirrel Cage Motor...experiment on the relationship between load torque with the motor speed...
 
Wait, so the more load you apply to the engine the more it slows down? I don't know much about squirrel cage motors but that makes perfect sense to me.

There's torque that tries to speed the motor up (driving torque) and torque that tries to slow it down (load). Increasing the driving torque, as you say, increases the angluar acceleration. Howerver, the load works against the driving torque. Increasing the load effectively DECREASES the driving torque...and thus the angular acceleration/ speed.

If I'm talking about something completely outside of what you had in mind, please correct me...
 

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