Electrical Circuit Tests: Life-saving Technology?
In 1998, one of the worst aviation accidents in history took place when Swissair Flight 111 crashed off the coast of Nova Scotia. The flight took off on time from the John F. Kennedy International Airport in New York City and was enroute to Geneva, Switzerland. Two hours and thirteen minutes after take off, the aircraft struck the ocean 8 kilometers from the coast, just southwest of the Halifax International Airport where it was supposed to make an emergency landing. All 229 people onboard were killed.
The investigations following the accident took 4 years to complete and cost nearly $39 million dollars. The Transportation Safety Board of Canada (TSB) determined eleven different factors that contributed to the crash, the first and foremost being the installation of flammable material that could "be ignited and sustain or propagate fire." The fire started and spread so rapidly, the crew was unable to control it and subsequently lost control of the aircraft.
It was also speculated that faulty wiring was another contributing factor. Every commercial aircraft in use has literally miles of wiring; worn insulation of these wires can cause a short circuit, which consequently can cause a major disaster. New, advanced technology has made it possible to prevent tragedies like the Swissair Flight 111.
LiveWire Test Labs, Inc. has developed a cutting-edge device that monitors and detects changes in electrical circuits within high noise environments (such as aircraft). Not only does an electrical circuit test save money on troubleshooting and maintenance costs, it can increase the reliability of the system and maintain a safe environment, certainly of utmost importance for the thousands of airline customers who travel daily.
Article Source: ArticlesBase.com
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Help with easy electricity circuit questions?
1. List 3 ways to determine the total resistance of a series circuit.
2. What happens to the total current in a parallel circuit as more resistors are added to the circuit?
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telephone master socket and internet connection?
i live in a rented house where my landlord lives abroad and the letting agents are pretty useless at stuff like this, i have 3 phone sockets, one by the front door, one by the television in the lounge and one in the master bedroom. Until today my modem box for sky broadband has been connected to the bedroom socket, with the computer in the spare room; the modem is connected to the computer via some funky blue plugs which use the electricity circuit in the house to run the ethernet cable as i don't have one long enough to run between the two rooms. now until today my internet has worked just fine with all the green lights lit as they should be but this morning the light concerning my internet connection is not lit. i have phoned sky and they say that because the modem is not connected to the master socket it fails to run properly (although its been fine for 8 months!) I have moved the modem downstairs and it is now by the front door and seems to be working fine, i have had to move the land line telephone into the lounge (which is where i prefer it anyway) but my modem will not work to connect to the internet unless i unplug the phone from the lounge socket!! which of course is very annoying. do i have everything plugged in the right way? and why doesn't it work anymore? i know this question is very long but i really don't understand why my phone line seems to hate me all of a sudden and thought more info would give you guys an easier chance for answering, thanks very much!!
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Communal lights with no switches? Any replacement ideas?
We recently moved into a newly converted two condo building. The contractor who did the renovation before the people downstairs and we bought our condos installed an outside light for the front and back doors and lights in the front and back staircase, which are hook up to the communal electricity circuit/meter. There are no switches for any of these lights. The only thing we can influence is a timer in the basement that can be set for a certain lighting period. We are not sure if this was a safety/security requirement for condos or what, but both parties agree that this is annoying. We don?t necessarily need the light on in the staircase all the time when the exterior lights are on, and when someone comes home after the ?shutting off time? we currently have set around midnight, there?s no way to switch a light on in the staircase.
So here?s our question: Is there anything we can easily install now that would allow us to turn the lights on and off when we really need them? Are there any substitutes to regular switches or something? The best thing we can think of are pull chain lights that we could install in the staircase. We would extend the timer period to be on all night, which would then allow us to switch the staircase lights on and off at will. The only issue would be that the exterior lights would be on all time. Maybe someone was in the same situation and found a great solution. We just don?t like wasting energy and our money :-).
Thank you!
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Electricity circuits. How do you visualise it?
I'm having trouble visualising what goes on in electric circuits, and it is making solving problems very difficult. Here's how I understand it. If there is anything wrong, could anyone point it out? Also, please tell me how you visualise electricity conduction.
A battery is a collection of cells with a potential difference across it, providing it with an electromotive force (the difference in charge between the positive terminal and the negative terminal causes electrons to be repelled by the negative terminal and attracted to the positive terminal). When passing through the battery, electrons are given energy (a charge?) to travel through the circuit. That energy is lost (charge is lost?) when the electrons collide with atoms or other electrons (encounters resistance). When measuring potential difference, you use a voltmeter which measures the energy that was lost by electrons when travelling through a wire or circuit component (lost due to collisions/encountering resistance?) . This is seen as a drop in voltage. A battery supplies electrons with the same amount of energy whatever the components in the circuit. How that energy is spent depends on the resistance, and the rate of charge flow (current). So, the bigger the voltage drop at the terminals of a circuit component (for the same resistance), the larger the rate of charge flow. (why is this?Is is the greater flow of current which causes the bigger voltage drop instead?)
There is loads more I need to clarify, but this is enough for the moment. Please be sure of your answer before replying, so that i dont get the wrong idea. Any help is welcome though. Thank you!
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Someone explain to me what probing a simple circuit(electricity circuit) is?
Language that is easy to understand please, i keep getting complicated answers
Thank-you
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Why do we need relays?
(Not the race but in electricity, circuits and switches)
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Need help with this series-parallel electricity circuit?
Need some help with this complex circuit
this is a picture of the circuit..
http://i25.photobucket.com/albums/c88/nomaon20z/2009-07-08223645.jpg
Thank you!!
im trying to find the E.I.R. for all of them.
(VOLTS,AMPS,REST.)
et,it,rt.
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