Monday, November 24, 2008

STAR DELTA STARTING CURRENT

DURING STAR CONNECTION

Vphase = 1/root3

Iphase = Iline

Motor only develope 33/100 of torque thus Iphase = I line = 1/3 Istarting
= 300A (clamp)
Therefore Istarting~300X3=900A

DURING DELTA CONNECTION

Vphase=Vline=415V
Iphase = 56A(Clamp) & Iline=100A (Clamp)

Iphase= Iline/root3


ref:
http://www.usmotors.com/products/ProFacts/1-120-7.htm
http://www.eng-tips.com/viewthread.cfm?qid=42958
http://www.eng-tips.com/viewthread.cfm?qid=16137
http://www.eng-tips.com/viewthread.cfm?qid=21948
http://www.eng-tips.com/viewthread.cfm?qid=22786

Sunday, November 02, 2008

12 simple ways to supercharge your brain

Have you ever felt exasperated when you bumped into someone at the store but absolutely couldn't remember their name? Sure, it happens to all of us.

Despite being the strongest computer on the planet, our brains do lapse. It's hard to blame them really. As humans, we spend much of or existence stuffing our brains with stuff.

No matter how powerful our brains are, they need recuperation time to be kept in shape. Think of it as a tune up for your brain. Skipping brain maintenance is as silly as the person wandering the parking garage because they forgot where they parked. Is that you? Are you that person? If so, fear not; we are all that person at some point.

Now I am not a brain surgeon and I am not going to suggest you do anything surgical or dangerous. I am however an astute student of human behavior so I always look for simple ways to super charge my brain.

Here are some things you can begin doing as soon as today to begin the great brain tune up:

Eat Almonds
Almond is believed to improve memory. If a combination of almond oil and milk is taken together before going to bed or after getting up at morning, it strengthens our memory power. Almond milk is prepared by crushing the almonds without the outer cover and adding water and sugar to it.

Drink Apple Juice
Research from the University of Massachusetts Lowell (UML) indicates that apple juice increases the production of the essential neurotransmitter acetylcholine in the brain, resulting in an increased memory power.

Sleep well
Research indicates that the long-term memory is consolidated during sleep by replaying the images of the experiences of the day. These repeated playbacks program the subconscious mind to store these images and other related information.

Enjoy simple Pleasures
Stress drains our brainpower. A stress-ridden mind consumes much of our memory resources to leave us with a feeble mind. Make a habit to engage yourself in few simple pleasures everyday to dissolve stress from your mind. Some of these simple pleasures are good for your mind, body and soul.

* Enjoy music you love
* Play with your children
* Appreciate others
* Run few miles a day, bike or swim
* Start a blog
* Take a yoga class or Total Wellness routine

Exercise your mind
Just as physical exercise is essential for a strong body, mental exercise is equally essential for a sharp and agile mind. Have you noticed that children have far superior brainpower than an adult does? Children have playful minds. A playful mind exhibits superior memory power. Engage in some of the activities that require your mind to remain active and playful.

* Play scrabble or crossword puzzle
* Volunteer
* Interact with others
* Start a new hobby such as blogging, reading, painting, bird watching
* Learn new skill or a foreign language

Practice Yoga or Meditation
Yoga or Meditation relives stress. Stress is a known memory buster. With less stress, lower blood pressure, slower respiration, slower metabolism, and released muscle tension follows. All of these factors contribute significantly towards increases in our brainpower.

Reduce Sugar intake
Sugar is a non-food. It’s a form of carbohydrate that offers illusionary energy, only to cause a downhill slump once the initial burst has been worn off. Excess intake of sugar results in neurotic symptoms. Excess sugar is known to cause claustrophobia, memory loss and other neurotic disorders. Eat food without adding sugar. Stay away from sweet drinks or excess consumption of caffeine with sugar.

Eat whole wheat
The whole wheat germs contain lecithin. Lecithin helps ease the problem of the hardening of the arteries, which often impairs brain functioning.

Eat a light meal at night
A heavy meal at night causes tossing and turning and a prolonged emotional stress while at sleep. It’s wise to eat heavy meal during the day when our body is in motion to consume the heavy in-take. Eating a light meal with some fruits allows us to sleep well. A good night sleep strengthens our brainpower.

Develop imagination
Greeks mastered the principle of imagination and association to memorize everything. This technique requires one to develop a vivid and colorful imagination that can be linked to a known object. If you involve all your senses - touching, feeling, smelling, hearing and seeing in the imagination process, you can remember greater details of the event.

Control your temper
Bleached food, excess of starch or excess of white bread can lead to nerve grating effect. This results in a violent and some time depressive behavior. Eat fresh vegetables. Drink lots of water and meditate or practice yoga to relieve these toxic emotions of temper and stressful mood swings.

Take Vitamin B-complex
Vitamin B-complex strengthens memory power. Eat food and vegetables high in Vitamin B-complex. Stay away from the starch food or white bread, which depletes the Vitamin B-complex necessary for a healthy mind.

I don't believe these are that tough. If you find yourself increasing stumped, give a couple of these a try.

Written by Shilpan Patel of Success Soul and cross-posted from Dumb Little Man, a web site that provides tips for life that will save you money, increase your productivity, or simply keep you sane.

Tuesday, October 31, 2006

Why We Love to be Scared

For all of their stomach-turning gore, horror films and haunted houses attract people in droves. This ability of the human brain to turn fear on its head could be a key to treating phobias and anxiety disorders, according to scientists.

When people get scared, their bodies automatically triggers the "fight or flight" response—their heart rates increase, they breathe faster, their muscles tense, and their attention focuses for quick and effective responses to threats.

"It's nature's way of protecting us," said clinical psychologist David Rudd at Texas Tech University.

If the brain knows there is no risk of really being harmed, it experiences this adrenaline rush as enjoyable, Rudd explained. The key to enjoying such thrills lies in knowing how to properly gauge the risk of harm.

"Young children may overestimate the risk of harm and experience true 'fear.' When that happens you see the child cling to a parent and cry, convinced there's a very real chance of harm," Rudd told LiveScience. On the other hand, "adults may well scream but quickly follow it with a laugh since they readily recognize there's no chance for real harm."

On a higher level

This phenomenon also explains why people can enjoy skydiving, bungee jumping and extreme sports.

"In these cases, those engaging in high-risk activities will tell you that the risk is lowered by their training and precautions," enabling them to enjoy the experience, Rudd said. The key structure in the brain responsible for this effect is likely the amygdala, he added, which is key to forming and storing memories linked with emotions.

The ability to enjoy fear makes evolutionary sense, said environmental psychologist Frank McAndrew at Knox College in Galesburg, Ill.

"We're motivated to seek out this kind of stimulation to explore new possibilities, to find new sources of food, better places to live and good allies," McAndrew said. "People enjoy deviations from the norm—a change of pace, within limits."

Key to therapy

If exposed repeatedly to a fearsome stimulus, the brain will get used to it and no longer experience it as frightening. This is a key behind cognitive therapies for anxiety dysfunctions such as phobias and post-traumatic stress disorder, where a person's system overreacts to perceive something as threatening when it is not, Rudd said. When such cognitive therapies are combined with medicines, their success rate at improving symptoms "is 80 percent," he added.

Meanwhile, McAndrew is exploring what makes houses feel haunted in the first place.

"We're focusing on what architectural features make houses appear haunted or not," he said. "We're finding they tend to be laid out in a confusing way, so that you're not sure where you are in the house. They're high in 'mystery'—you can't see very far in the house. And there are all kinds of sounds and smells not usually found in a house that can make it seem creepy."

amygdala:
are almond-shaped groups of neurons located deep within the medial temporal lobes of the brain in complex vertebrates, including humans. Shown in research to perform a primary role in the processing and memory of emotional reactions, the amygdalae are considered part of the limbic system.


Post-traumatic stress disorder (PTSD):
is a term for certain psychological consequences of exposure to, or confrontation with, stressful experiences that the person experiences as highly traumatic. [1] The experience must involve actual or threatened death, serious physical injury, or a threat to physical and/or psychological integrity. It is occasionally called post-traumatic stress reaction to emphasize that it is a routine result of traumatic experience rather than a manifestation of a pre-existing psychological weakness on the part of the patient.

Wednesday, October 18, 2006

Why all women should exercise

No matter at what age a woman becomes physically active, an ever growing body of research continues to support the notion that the benefits of this increased activity are tremendous, and extremely beneficial throughout a woman's life.

Youth
Until recently, most people believed that children didn't need to worry about getting enough exercise. But with the advent of television, and now computers, a growing generation of sedentary children are becoming the next generation of unhealthy adults. Current research is finding that heart disease begins developing in youth (reference?). Considering that cardiovascular diseases are now the leading cause of death for women as well as men, one could conclude that childhood and adolescence is the appropriate time to develop healthy lifestyle habits that include exercise.

Midlife
During midlife, the most common physical complaint among women is weight gain. This slow, but steady and persistent gain is something the majority of middle aged women experience. Experts disagree on the cause of this weight creep. Some believe it caused in part by hormonal changes; others argue it is most likely due to a decreasing amount of lean muscle tissue, which results in a slower metabolic rate. Research studies by Wayne Wescott, PhD, Fitness Director at the South Shore YMCA in Quincy, Mass., have shown that women who stay active throughout midlife have more lean muscle, greater metabolic rates and less weight gain then their sedentary peers.
Research has also shown that many of the other common ailments of middle aged women can be alleviated or controlled through exercise. Exercise can improve sleep quality and daytime energy levels, and help prevent chronic health problems such as high blood pressure, Type II diabetes, high cholesterol levels, depression and arthritis. One of the most convincing reasons to begin an exercise program in midlife is to ward off the debilitating effects of osteoporosis. It is widely known that a woman's bone density begins to decline even before her midlife years, and bone loss accelerates after menopause. While most types of activity offer some protection against bone loss, weight bearing exercise such as walking, jogging and strength training seem to offer the greatest benefit.

Senior
Physicians who work with the elderly are the fastest growing group of doctors who use exercise to combat injury, illness and disease. Washington Physiatrist Scott Gross, M.D. routinely prescribes exercise programs to his elderly patients. "Decreased muscle strength, flexibility and endurance is central to many of the problems I see in older adults, especially women. In terms of daily living, the typical 75-year-old woman I see rarely has adequate strength to carry groceries up a flight of stairs, and certainly could not pick herself up off the floor after a fall." The good news is that it is never too late to start. The MacArthur Foundation, whose researchers have been studying successful aging for a decade, has found that even those in their 90's who never exercised before can become more physically fit, and can enjoy an improved quality of life, even if they have other health problems.

Start Now
Once you've made the decision to begin exercising, don't wait. By starting today, with something as simple as a walking program you will discover the key to a lifetime of health. For many women, young, old or in the middle, the day they begin an exercise program can be the day they discover the key to improved quality of life.

Thursday, October 05, 2006

Study Shows Side Airbags Reduce Crash Deaths


WASHINGTON (Reuters) - Airbags that drop from the roof or inflate from the seat to provide head protection in serious side crashes significantly reduce deaths, especially when cars are struck by bigger sport utilities and pickups, according to industry research to be released on Thursday.

Building on previous research, the findings by the Insurance Institute for Highway Safety could pressure the auto industry and the government to accelerate efforts to incorporate head protection in more vehicles.
The auto industry agreed three years ago to equip all vehicles with side airbags with head protection as a standard feature by 2009. Federal safety regulators proposed in 2004 that automakers provide head protection but did not mandate a technology.

Safety advocates have urged regulators and the industry to make the technology standard as soon as possible.

"Once every passenger vehicle on the road has side airbags that include head protection for the front-seat occupants we can save as many as 2,000 lives per year," said Anne McCartt, the insurance group's research vice president and author of the report.

The institute's work is funded by the insurance industry and its crash test analyses are closely watched by the automakers and safety regulators.

In 2004, 2.7 million passenger vehicles were involved in side-impact crashes, according to police reports cited by the researchers. More than 9,000 people were killed.

Researchers concluded side airbags that protect the torso reduced deaths by 26 percent in side-impact crashes. The same study also found that deaths declined by an estimated 37 percent when the vehicle was also equipped with side airbags that protect the head.

"Head protecting side airbags reduce driver fatality risk when cars are struck by SUVs and pickups, not just other cars," McCartt said.

Side airbags deploy from the ceiling, the seat or the door. The technology is relatively new and is included in about 80 percent of new cars and sport utilities as standard or optional equipment. Fewer than half of all pickups have the feature.

The new research is important for government and industry efforts to address safety concerns that arise when bigger and stiffer vehicles -- mainly SUVs and pickups popular on American roads -- crash into smaller passenger cars.

The National Highway Traffic Safety Administration estimates nearly 60 percent of those killed in serious side- impact crashes suffer brain injuries.

A NHTSA spokesman had no comment on the insurance group's research.

*TORSO = Torso is an anatomical term for the greater part of the human body without the head and limbs. It is also referred to as the trunk. The torso includes the chest, back, and abdomen.