Maximum and Minimum EMF in a generator

Click For Summary
In a generator, if the maximum induced EMF is 200V, the minimum EMF is generally considered to be -200V rather than 0V. This conclusion is based on the principles of power generation, particularly in dynamos and alternators. The discussion emphasizes that while generalizations can be tricky, the negative value reflects the alternating nature of the EMF. Understanding this concept is crucial for those studying electrical engineering. The topic highlights the importance of recognizing the full range of induced EMF values in generators.
Nachoswin
Messages
1
Reaction score
0
Just a quick question, if the maximum induced EMF of a generator is say 200v, would the minimum EMF be -200v or 0v?

No equations necessary I say.
 
Physics news on Phys.org
Hi Nachoswin! http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

I would say that as a generalization one cannot say with any degree of certainty. However, given that you probably encountered this in some part of your study, and that likely involves power generation, then for a dynamo or alternator the answer is most likely to be -200V. :smile:
 
Last edited by a moderator:

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

Formula for the average EMF of generator
  • · Replies 6 ·
Replies
6
Views
951
Introduce a battery to an LR circuit
  • · Replies 16 ·
Replies
16
Views
1K
EMF induced by a magnet falling through a coil
  • · Replies 4 ·
Replies
4
Views
3K
The potential difference/EMF in RL circuits
  • · Replies 6 ·
Replies
6
Views
3K
What Is the Maximum Induced EMF in the Inductor?
  • · Replies 8 ·
Replies
8
Views
2K
Calculate the induced EMF of a rotating loop
  • · Replies 7 ·
Replies
7
Views
3K
Electromagnetic effects and Magnetic Fields Questions
  • · Replies 2 ·
Replies
2
Views
2K
Why the need to be careful opening a switch on this RL circuit?
  • · Replies 6 ·
Replies
6
Views
1K
Why is source force + electrostatic force = 0 inside battery?
  • · Replies 10 ·
Replies
10
Views
2K
The strength of induced electric field
  • · Replies 18 ·
Replies
18
Views
2K