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What are the problems associated with the y-y three-phase transformer connection?
Your third leg is called the high leg and can exceed 180 or more volts. In a 3 phase panel you will loose a third of your circuits unless they are used for motors or other equipment that uses three phase evenly through its function {meaning it doesn't use one leg exclusively for controls or 110V functions. It get a bit involved explaining the windings of a transformer and center taps but suffice it to say one leg gets more than it's share of windings in the transformer. It was used in the early years of industry when single phase 240V systems were the only game in town and they wanted to get more power from the Wye set up prior to delta. It never was popular but a necessity for industry and grew only because of slow development incorporating the 208V delta 3 phase system.
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What are some problems associated with the use of nonrenwable energy?
Mostly, you run out. If it's fossil fuels then you also get global warming.
What is the name of the genetic syndrome when one develops a streak of silver hair spontaneously?
If you are referring to Poliosis (decrease or absence of melanin in hair of the head) there are a number of diseases associated with it, here are a few: Waardenburg Syndrome - associated with deafness Piebaldism - associated with abnormal skin pigmentation Partial Albinism - associated with eye problems Vogt-Koyanagi-Harada Syndrome - associated with eye problems http://en.wikipedia.org/wiki/Poliosis http://en.wikipedia.org/wiki/Waardenburg%27s_syndrome http://en.wikipedia.org/wiki/Piebaldism http://en.wikipedia.org/wiki/Albinism http://en.wikipedia.org/wiki/Vogt-Koyanagi-Harada
What health risks can be associated with caregiving?
Increased caregiver stress may result in health problems such as ulcers, high blood pressure, difficulty sleeping, weight loss or gain, or breathing difficulties.
What can protect a computer from problems caused by a change in power?
A surge suppressor will protect against transient high voltage surges.A ferroresonant transformer will protect against transient low voltage brownouts.A uninterruptable power supply will protect against power failures of several minutes duration.
What are the disadvantages of a bridge rectifier?
One segment goes out, you replace the whole thing. They tend to build up a little extra heat since they're all crammed into a single package. To avoid problems, use a bridge that will only run at half capacity. Meaning, if your device is pulling 1 amp, use a 2 amp bridge. And USE A HEAT SINK!!! and don't forget the heat sink grease.
