Generators Definition and 288 Threads

I've posted similar questions on a different forum previously, but since I'm feeling a bit guilty about going on at the one person there who answers, I'll post these here. Hope it's ok if I don't follow the template since they're more conceptual than a standard problem. Any help appreciated...

Let p be a prime number. Find the number of generators of the cyclic group Z_(p^r), where r is an integer >=1. A small hint, please?

I got the Dihedral Group D = <(1 2 3 4 5 6 ), (1 2)(3 4)(5 6)> and the symmetric group Sym(5). Now I want to construct a homomorphism f : D --> Sym(5). Am I free to map the generators (1 2 3 4 5 6) and (1 2)(3 4)(5 6) to any element in Sym(5) as long holds: f((1 2 3 4 5 6))6 = 1, f((1 2)(3...

After reading some threads I decided to post my question, since I couldn't find an sufficient answer. In general the generators of a lie group combined with the compostion [A,B]=ifB build a Lie-Algebra. Where the Generators build the base of the vectorspace. In a common vectorspace you can find...

1. WHy does hair stand up when touching a vandergraph generator ,i know that negative charges repel other negative charges 3. is it the fact the hairs are negatively charged so repel each other or is it the electrons releasing into the air

Could somebody please show me the calculation which shows that the M_mu_nu representation of the Lorentz generators gives rise to a (1,0)+(0,0) representation? Thanks in advance

Need help to find a way to capture waste heat from diesel electric generators (45 KW) to heat water for small hotel use (45 rooms + kitchen). Exploring all options: jacket water, oil, exhaust. Anyone please help.

can anyone explain the diff to me thx.:!) :!)

I was wondering,could someone explain me how do minimal tree generators work?

Hi, I have been asked to prove that an algebra with only two generators can not be simple. I have thought about it and have tried to show that one of the two structure constants go to zero in the Lie algebra condition that [xi,xj]=sumoverk Cijkxk , but I can't find any way to show that (using...

The angular momentum is the generator of spatial rotations. Are the commutation relations for angular momentum the result of the fact that rotations (all rotations, also classical) do not commute or are they the result of the quantization rules for quantum mechanical angular momentum? Are...

We've an old professor, can make an elephant sleep, bad notes, bad lectures and no real source for what we are studying...The thing is people just copy and paste his notes but ican't do that, i don't have this ability, i need some proper notes about generators, using sublimation, chromatography...

Just curious if my proof is sufficient, again :smile: ------- Let A_{1},... ,A_{r} be generators of a subspace V of R^n. Let W be the set of all elements of R^n which are perpendicular to A_{1},... ,A_{r}. Show that the vectors of W are perpendicular to every element of V. ------- We must...

Hi everyone. At the moment I am doing motors and generators in physics, in particular Lenz's Law. I understand most of the stuff, but I am really just stuck on 2 questions. If you could help me, I would really be appreciative (explanations, not just answers preferable). Q1) A flexible metal...

Why is the efficiency of generators working on thermionic emmission and the generators working on the seebeck effect (thermoelectric) so low?

Would Faraday's homopolar motor / generator work if it was rearranged to have the magnet as the disc and conductor / coils where the magnet used to be? A brushless version essentially. http://www.rose-hulman.edu/~moloney/AppComp/2001Entries/e11p/homopolar.htm Something tells me no, but...

A few more questions that i am stuck with: An AC generator has a coil area of 120cm². The coil has 100 turns. The generator produces a peak voltage of 29V when the coil is turning at 6000 revolutions per minute. Calculate the magnetic flux density (assumed uniform) required. The rate of...

I just read some stuff on pyromagnetic generators, and my first thought was why don't they use the pyromagnetic generators in nuclear power plants and in any power plants that use thermal energy? You would skip conversion from thermal to mechanic, and then from mechanic to electric. I'm sure...

hello... I'am Fandi from Indonesia. Because the lack of books and the economy crisis present in Indonesia, I encountered problem in finding good reference. can anybody tell me how generators supply electricity to houses? is there any online references? Thanks before. :smile:

Hello everybody, I am trying to use a pair of Tektronix FG 503 Function Generators to modulate a carrier wave and produce an AM modulated signal. I tried running the output of one generator into the VCF input of the other, but it seems to give me FM modulation. I did this because I am...

Hello I am supposed to design a hand driven AC generator. I kinda know how to do it. You just have some sort of coil and you rotate it in a magnetic field. Thats all good but for analysis part I am required to give specific information information about no of loops of the coil and total...

The coil of a generator has a radius of 0.14 m. When this coil is unwound, the wire from which it is made has a length of 5.7 m. The magnetic field of the generator is 0.20 T, and the coil rotates at an angular speed of 25 rad/s. What is the peak emf of this generator? Please help me get...

hey I'm wondering whether an ac generator would be classified as a voltage source or current source, or neither (if that's possible)? I'm asking you guys since i have nooooo idea how i would go about determining this. Thanks!

I'm not sure on what I have to do for this practical. I have to develop a theory and choose certain equipment for me to perform the investigation and obtain results... only i don't know where to start. the aim is: Investigate how the amplitude of a pendulum formed by a magnet and thread...

hi, I'm currently learning about self-excited and separate shunt generators, and I'm having a hard time comprehending the residual magnetism. i was just wondering if a generator have lost all of its residual magnetism, can it still build up an output voltage? can someone explain this to...

Hello all, I am currently writing a program where I need to find a generator in VERY large modular prime systems, where p can be anywhere up to 2^1024. Is there an efficent (i.e. hopefully polynomial time on the number of bits) way to do this? For example, the current system I am working in is...

is there a way to 'beat' a random card generator in blackjack with card counting? a very simple card counting system works by counting high cards against low ones, if i have a count of +9 (high cards likely) with 3 decks left in the shoe i divide by # of decks left and get a +3 'true...

Yea, I just had a pretty weird idea, can we instead use water instead of a coil since water is a conductor as well (impure water that is.). Can we instead rely on convection currents or water waves to power this generator?

I'am making some calulations on a product that i later will atemte to build, and i was wondering how you calulate the resistance of a generator !? The mechanical resistance, that is how big a force will i need to drive e.g a 6v generator? All replays welcome Bonna

Why couldn't permanent magnets be used to create electricity? If permanent magnets never lose or change their magnetic properties, then would a generator using permanent magnetics be essentially free energy? Isn't this some sort of contradiction to the conservation of energy?

Question 1: Why use an iron core armature? I took an old electric motor apart to study it. I noticed the armature has windings around an iron core. Iron is used to concentrate the magnetic flux. But iron is also attracted to the electromagnets used to repell the armature windings! It seems to...

main features of dc motor (input dc) Two permanent magnets on opposite sides of the motor, with opposite poles facing each other. The pole faces are curved to fit around the armature. The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal...

An electric generator can make electrons, no one has found a manner to make a proton, not to the best of my knowledge, break? Yup! make? Nope! Electrons can be made, or "brought into being", there stability is nowheres near that of a protons, or a nucleated neutron...so's I would suspect...

Are EMP generators llegal in the United states, more specifically florida? Also how much voltage do you speculate must be created to create an EM(P)?

I just saw a demonstration of an induction motors and was wondering if its possible to build an AC or DC generator without contact brushes? The only way I can think of is if you have a permanant magnet spinning near or within a coil or wire. Is there anyway to produce a magetic field with just...

Question, does the force required to turn a generator change with changing current loads? Basically I’m wondering if it would take more force to turn a generator when there is a load, apposed to if there were zero load? Thanks Philip

Is it possible to make a magnetic field generat something to contain something in a compact form like say i wanted to make it thin and tube like to hold electricty or plasma something in which is to dangerous to hold but could be contained in a magnetic field sorry if I am being a bit confusion...

The latest assignment in my high school physics class is to study and teach the class about some part of the electrical distridution system. My part happens to be, How does a generator work and what are the principles behind it? I have sort of a basic lesson plan, but I want to make sure I'm...