Why on my dcm 1515 powered house sub only 1 15 inch speaker has a magnet and actually works.?
I purchased a powered sub about 5 years ago. I have been very happy with it. I was taking it apart because my last house had bugs. I figured there was bugs or excrement inside. To my surprise only 1 15 speaker actually has a magnet and works. I just wondered if that is truly how it comes. If anyone knows the true answer i would appreciate some insight Thank you.
Could you power your house with a lot of batteries?
Absolutely!Expensive? Absolutely too!See here: Specs
Why don't we fuel our power houses and charge our electric vehicles, instead of fueling combustion engine vehicles polluting everywhere they go, even we can have the treatment of carbon emissions in power houses?
In a nutshell? Efficiency.For what you propose to work, we need to overhaul our existing infrastructure to work.On top of that, the more infrastructure electricity needs to pass through, the more of it gets loss through things like parasitic loss. Electrical transfer is not 100% efficient. Charging a car from a charger that is connected directly to the power plant is inherently more efficient than charging the same car at a station that is connected to the plant via 30 miles of power lines and 3 transformers.The carbon has to go back into the environment in some form. Such is the nature of fossil fuels. Even in a stoichiometrically perfect combustion reaction with a hydrocarbon, you will always get water and carbon in some form. As such, it is more thermodynamically efficient to pull the power from the car’s engine directly than it is to pull it from a power plant.
Is it possible to power a household entirely by solar power?
Most definitely. It's not only possible, but there are a lot of houses now that have zero net energy use that doesn't come from the sun, by producing more power than their homes need while the sun is up, they can sell more power to the grid than they use during night time and bad weather. Now, the real question, I suspect you're asking, is whether it's possible for a household to use only solar power, with no reliance on any other source. These also exist, but only on a very small scale, primarily in rural areas, with people who don't need electricity all the time, and are willing to just go without when the sun goes down. For a typical, modern house to run exclusively on solar, all they really need is a way to store the power when the sun is not shining. That is possible, especially now that the Powerwall is available, but those are still very expensive and only store 5-10 hours worth of power, depending on your home's energy use. As the technology improves in the future it may become more financially viable.
Physics or Electric Average Current to a house Question?
Average house, by the numbers I have seen used power at the average rate of 1.2 kW In kW-hours, that is 1.2 kW x 24 hour/day x 30 day/month = 860 kW-hours / month pretty close. 1000 kW-hour / month x 1 mo/30 days x 1 day/24 hour = 1.39 kW US houses have 240 volts split phase, so 1390 / 240 = 5.8 amps For the homework, considering (incorrectly) just a single 120 volt line, that would be 11.6 amps. Average resistance, pretty meaningless, is 120/11.6 = 10.4 ohms .
I own the Advent powered sub.10. I need to replace the sub and don't know how many ohms it is?
If it is powered it does'nt matter what ohm rating it is. Just buy another Powered Sub and plug it in! To just replace the speaker, the old speaker usually has a rating printed on it, but a better quality sub speaker is usually in the 4-6 ohm range, but there are 8 ohm speakers used in the cheaper models>they are just regular woofers labeled as sub-woofers! The manufacturers web-site may have specs for that model.
How many houses does 1MW-hr of electricity power for a year?
Firstly the question needs to be re-framedWell, understand the difference between 1 MW and 1MW-hr. 1 MW means the installed capacity of a plant (Eg: 1MW Solar Plant means there are solar panels with overall rated capacity of 1 MW or 1000 KW) and when this plant works for 1 hour, it’ll generate 1MW-hr of electricity under ideal condition.So the question should go like, How many houses does 1MW capacity power plant can power for a year?Now it depends on the technology also, whether its conventional coal based power plant, solar or wind.What difference does the technology make?See, coal based thermal is dependent on coal for its operation, which is available all the times.So Coal based will work 24 Hours a day and generate 24 MW-hrSolar and wind on the other hand depends on sun and wind, which are external to our circle of influence.As solar is available on 7–8 hours a day, that supply varies through out the day.Like the above graph shows the amount of solar radiation we get through out the day.So solar based will work for some average 6 hours(on the upper side) and generate lets say 6 MW-hr.Similar is the case with wind.Now, coming back to the original question.Lets say, an average household in an imaginary city “Solisland” uses 6 Units (kW-hr) of electricity in a day.So in a year, the household will consume = 6 X 365 = 2190 kW-hr = 2190 UnitsCoal based will provide us with: 1 MW-hr X 24 X 365 = 8760 MW-hr = 8760000 kW-hr = 8760000 Units in a yearA Coal baser plant will provide electricity for = 8760000/2190 = 4000 households in a yearAndSolar Based will provide us with =1MW-hr X 6 X 365 = 2190 MW-hr= 2190000 kW-hr =2190000 Units in a yearA Solar based plant will provide electricity for = 21900000/ 2190 = 1000 households in a yearP.S. calculation is just to make one understand the concept, otherwise actual generation and consumption depends from case to case on many factors.