Generation Definition and 340 Threads

Homework Statement Two sites are being considered for wind power generation. In the first site, the wind blows steadily at 7 m/s for 3000 hours per year, whereas the second site the wind blows at 10m/s for 2000 hours per year. Assuming wind velocity is negligible at other times for simplicity...

I am going to use piezoelectric disks to generate energy from pedestrial movement on footpath please help me which circuit i have to prefer for my project?

A few days ago I read the phrase "variable-capacitance power generation." I tried to find more information, but nothing turned up. Is anyone here familiar with it?

Hi all, I am trying to develop an application that converts a parallel set of input contours(polygons) with constant Z values to a tessellated surface mesh .The contours may also consist of holes All available tessellation techniques like glu,delaunay talk about 2d triangulations only...

Are particles that are not stable (for example top, bottom quarks; W and Z) when produced in particle colliders possibly stable at very high energies? Are third generation particles stable at high energies? Thanks, Mark

[PLAIN]https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/313028_10150383340891940_666206939_8328916_99129355_n.jpg Would this system work, if the air-water isolation problem (water leakage into the air tank) is solved? If it would work, where does the input energy comes from? We obtain...

I read an article that using peizoelectricity , ideas to generate energy from public movements was tried. How far was it sucess? If this is possible , can we generate energy from vehicles movement on roads?

Is the Haber process ever used to generate electricity? I recognize that it's not an efficient means, because of the amount of energy needed to create H2 gas, but because the actual Haber process is exothermic and is less efficient once the temperature creeps above 400 degrees, why shouldn't it...

Hello everyone, I represent an iron & steel manufacturing industry which runs on electricity. Currently our electricity consumption is 1,000,000 units/month @ 5.5 INR/Unit consumed along with maximum kVA reached during the time of manufacturing of product which is affecting the costing of...

OK so i know it is possible to double the frequency of a light beam by using second harmonic generation by passing the beam through a non-linear crystal; however i am unclear as to the required intensity of light beam that is needed to achieve efficient conversation. Would it be possible to...

Homework Statement Scientific Method - Set procedures / steps to investigating a thought / observation Spontaneous Generation - Living things came about by non-living things Homework Equations Define the importance of the scientific method with respect to the theory of spontaneous...

Hello, does anyone know of a code that will generate the expected neutron spectrum for an AmBe neutron source along with the expected reaction efficiency?

Hi all, I would love if someone could clarify these five questions for me: 1. Is it correctly understood that all stars are of a certain generation? 2. Which generation is the sun? 3. What is the highest generation star we know of? 4. In the Milky Way, what is the share of first...

From this day , if we take in account . How much population will be my following generation at the end of 2000 years(from this day). My question is , will the population be thousands or millions? Will it likely be fade away in the middle and no trace remains in the end? Any...

Hi All, I was searching in the net if the exact solution of the nonlinear system describing the second harmonic generation does exist, but I found nothing. Does some one know about such solution and if yes can you give references? Thanks

What novel objects do you anticipate we will observe among the very first galaxies? Among the first stars?

Homework Statement Consider the following probability table: X 1 2 3 4 P(X) 0.4 0.25 0.25 0.1 Use the rejection method to generate a random number. Use the following list of random numbers: 0.6072, 0.4893, 0.0899, 0.3456, 0.4419...

Homework Statement a gas fired turbine generator for producing electricity has an efficiency of about 50%. how many cubic feet would be needed to produce 1000MW for one year. Homework Equations 2.4 x 10 ^8 SCF/day is the natural gas required for the power plant input = 2.4x10^11...

I am from India.I am currently doing my graduation in mechanical engineering.One thing that has attracted me a lot is energy production.I want to know if there are any PG courses specific to energy production any where.

I've been reading a bit recently on Second Harmonic Generation and came across a supposedly separate technique called Hyper-Rayleigh Scattering (HRS). Can anyone explain the difference? I came across this paper, but didn't understand the difference...

Homework Statement There's a slab of a material with temperature T1 on the left and the T2 on the right. The thickness of the material is l with area A. In the centre, there is heat generation Qvol in the centre, which is a thin rod. Find the heat transfer Q through the material. Homework...

Hello, first time posting. If this is in the wrong forum, please move it to the correct one. (its a cross mechanical/structural/civil/electrical engineering idea) I was thinking on the way home Power generation. In order to generate power, wave motion can be used (such as tidal/wave power...

I am working on an HVAC system for a winery. Part of the heat loading during the peak late summer/fall season will be from the fermentation process and I am having difficulty finding information on the amount of heat generated from fermentation of wine. Exposed wine surface area of each tank...

ELECTRICITY GENERATION THROUGH THE CONVERSION OF ENERGY PRODUCED BY REVOLVING GEARS OF A TURNSTILE As the title implies, do you think it's feasible? I'm working on it as a topic on my research subject, but I'm having a hard time. I didn't know that there are lots of principles involved...

could second and third generation SM particles NOT be fundamental? since they are unstable and rapidly decay, could second and third generation SM particles NOT be fundamental? perhaps as bound states of more fundamental first generation particles? if they are not fundamental, then do we...

\mathrm{prob} \propto \mathrm{e}^{-\frac{(a -x_1)^2}{2 \sigma^2}} \mathrm{e}^{-\frac{(x_1 -x_2)^2}{2 \sigma^2}} \mathrm{e}^{-\frac{(x_2 -x_3)^2}{2 \sigma^2}} \mathrm{e}^{-\frac{(x_3 -b)^2}{2 \sigma^2}} a and b are known real constants. Is there a way to generate x_1, x_2, x_3 independently...

There is a step in some book which is vaguely explained, I just want to check whether my working is correct. Let G be a group, and let x be in G-{1}. Let Y be the set \left\{g^{-1}xg : g\in G\right\} . I want to show <Y> is normal in G. Now it's clear why Y is invariant under conjugation (Y...

Generally the working fluids in a power generating system is either water (steam) or air. This I imagine is because they are widely available fluids. The specific heats of these ranging from some 1 - 2 kJ/kg-K. For the sake of argument, let's assume that hydrogen or xenon are equally...

Hi I was told that I2ω is proportional to Iω2. It does not say so in my book. How is it one can easily see that it is the case? Niles.

1. Homework Statement A capacitor of capacitance C id charged by a battery of emf E and inernal resistance r, A resistance 2r is also connected in series with the capacitor. The amount of heat liberated inside the battery by the time capacitor is 50% charged is? Answer is E2/C 2...

With our present level of knowledge the only possible way for humans to leave the Solar system would be “Generation Ships”, large relatively slow spaceships that would take several generations to reach their destination. Even if such ships could be constructed, is it morally acceptable to...

Greetings, I'm seeing programs that allow solar, wind and other types of power generation to be connected to your house (or business) and you are still connected to your grid. The power company meters both - what they provide to you and what your private generation provides. Your power...

An object with a mass M is rotating around an axis, with an arm of radius R at a certain speed V. Assuming that the movement is constant, and a 100% efficiency, how many watt of electrical power can this device generate ? For example purpose, we can take M=60 kg, R=5 meters and V=10 meters per...

Hi My son (and now me too) want to know how friction develops heat. The only explanation I can think of (and that makes sense to me) is that during the rubbing molecular bonds are broken completely, or then remade at lower force levels, then the surplus energy is then transferred into heat...

Hello, I am in process of building a set up where i will be using a pendulum to impact a cylinder to generate angular acceleration. I started from basic physics for a answer and found the following method but doesn't seem to go any where from here. Please provide guidance. Torque = Moment...

Decay rate help I've been debating decay rates with another poster in another forum. Basically, the other poster has stated "The half-life/decay rate of the substances used in nuclear power generation have nothing to do with the generation of power. That they ARE radioactive is. Spent fuel...

I need help finding a device that can generate a sustained arc while utilizing only a 12 volt power source. Does anyone have any ideas? Arc should be able to jump a 1 and a half inch gap. Also what materials should I use for the electrodes that would not degrade over time?

Can anyone tell me what the most standard way of changing the frequency of an AC power supply is? Can it be done with circuitry or does the method of generation need to be set at the desired frequency?

hi friends, i came across this piece of news... "Until 2010, no solar sails had been successfully used in space as primary propulsion systems. On 21 May 2010, the Japan Aerospace Exploration Agency (JAXA) launched the “IKAROS” (Interplanetary Kite-craft Accelerated by Radiation Of the Sun)...

I would like to know of anything concepts regarding EMP. It's generation & how to sustain the pulse over long periods of time to create something like "no fly zones". Either to create a temporary block or permanent damage to any electrical items caught within the pulse radius. Also please...

for a three phase power generator, you can have sources in series with inductances in either a wye or delta formation by designing the generator differently. from my understanding, if you choose wye instead of delta, then the power produced will be increaced by a factor of the root of 3 in...

Hi this is my first post on here I am looking to create a large voltage across a primarily capacitive load at around 190 kHz. At the moment i have a 175 Watt power amplifier which puts out 55 Vp. The output impedance also needs to be quite low < 100 ohms Does anyone have any idea how to...

In fuel cells hydrogen combines with oxygen (due to a catalyst) resulting in a potential difference. Is it not possible to burn the hydrogen and use the energy from this exothermic reaction to produce electricity? Since the rate of reaction of hydrogen combustion is quite high we could keep the...

Hi Everybody! I have been wondering about wave generation from point sources, and interference. I have noticed that if several point sources are sited in a line much more than one wavelength long, a very directional interference pattern develops. The closer the sources and the longer the line...

Hello there, I'm new in this forum so sorry if this is not the right session to post my question. Well I'm taking a subject called Energy: Origins, Conversion and Uses (I guess this is the correct translation) and I need to do a final project which requires me to generate electrical...

I know people get tired of answering questions about photons, but I have a question regarding the best way to think of how light (i.e. E-M waves) are created. Several books and educational resources say that a light wave is created by "vibrating electrical charges." But my understanding of...

Hi All, I am currently designing a tethered balloon. The balloon is 36m3 and I was hoping to fill with hydrogen. The balloon will only be fully inflated at 400ft as I am aware of the risk of a hydrogen explosion. Unfortunately I live in Australia and 36m3 of hydrogen is USD$1800! I am...

Hi guys. I have a small question and i would appreciate your help. I want to find how many neutrons per second (in 4π) are produced from a neutron generator. The generator works with T(d,n) reaction.. We have 0.5 mA d at 100keV energy that hits a target of titanium-tritium that has 2*10^20...

Had a bad day at work and my design for a spark generator failed, so I'm asking for help. My requirements: To create a spark in a hard vacuum environment (10^-6 mbarr) To be ultra miniature (as a guideline about 1cm^3 is the space available) Available power lines is 4.4v at 0.22A or 700V...