External Torque vs. Torque: What's the Difference?

  • Thread starter Thread starter Muthumanimaran
  • Start date Start date
  • Tags Tags
    Torque
AI Thread Summary
Torque refers to the electromagnetic torque generated by an electric machine, while external torque is the load torque applied to the system. External torque can be positive, as seen in generators like gas or wind turbines, or negative, as in devices like fans and compressors. Understanding the distinction is crucial for analyzing motor performance and control. A free body diagram can help visualize the forces and torques acting on the system. The differentiation between these two types of torque is essential for effective motor control engineering.
Muthumanimaran
Messages
79
Reaction score
2
is there any difference between external torque and torque?
 
Physics news on Phys.org
Motor control engineer here (so my answer is not really physics-based):

Torque - EM torque developed by an electric machine
External torque - torque imposed by load (positive - generators such as gas/wind, negative - fans, compressors, etc.)
 
Draw a free body diagram. If the force producing the torque is external to a circle drawn around the body, the the force and its torque are external.
 

Thread 'Is calling fictitious forces "not real" just about terminology?'

Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
View full post »

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
View full post »

Similar threads

B Non-physicist needs your help torquing a nut!
Replies
9
Views
1K
I Effects of External Torques on the Angular Momentum of Asymmetric Bodies
Replies
3
Views
2K
I Why is the driven gear's torque's direction clockwise?
Replies
6
Views
2K
I What is the Purpose of Torque?
Replies
7
Views
2K
I Torque without a torque wrench
Replies
3
Views
6K
I The Correlation of Pressure and Torque in Rotational Motion
Replies
4
Views
677
I Moment of Inertia about an axis and Torque about a point
Replies
5
Views
3K
I Torque required from powered roller to rotate cylinder
Replies
19
Views
2K
B What is physical significance of the direction of angular velocity?
Replies
2
Views
1K
B Why does torque increase with increasing moment of inertia?
Replies
13
Views
2K

Hot Threads

Recent Insights

Back
Top