Track and Field

Track and field -  is a sport which combines various athletic contests based on the skills of running, jumping, and throwing. The name is derived from the sport's typical venue: a stadium with an oval running track enclosing a grass field where the throwing and jumping events take place.

 The running events, which include sprints, middle and long-distance events, and hurdling, are won by the athlete with the fastest time. The jumping and throwing events are won by the athlete who achieves the greatest distance or height. Regular jumping events include long jump, triple jump, high jump and pole vault, while the most common throwing events are shot put, javelin, discus and hammer. There are also "combined events", such as heptathlon and decathlon, in which athletes compete in a number of the above events. Most track and field events are individual sports with a single victor, but a number are relay races. Events are almost exclusively divided by gender, although both the men's and women's competitions are usually held at the same venue.

Track and field is often categorised under the umbrella sport of athletics, which also includes road running, cross country running, and race walking. At the international level, the two most prestigious international track and field competitions are athletics competition at the Olympic Games and the IAAF World Championships in Athletics, while the International Association of Athletics Federations is the international governing body.
Records are kept of the best performances in specific events, at world and national levels, right down to a personal level. However, if athletes are deemed to have violated the event's rules or regulations, they are disqualified from the competition and their marks are erased.
In North America, the term track and field may be used to refer to athletics in general, rather than specifically track and field events.

My First Time Creating Blog

                          PURPOSE OF CHARGING SYSTEM



 1.Restore to the battery the charges removed to crank the engine.

2. Handles the load of the ignition, lights, radio,and other electrical and electronic equipment while the engine is running.


                    ALTENATOR OPERATION

The alternator convert mechanical energy from the engine into the electrical energy. It usually mount on the side of the engine.
The engine crankshaft pully drives the alternator through a belt at two to three times crankshaft speed. A regulator usually on or in the alternator prevents the alternator from producing excessive voltage some manufacturers call the alternator a generator or ac generator.


                 ALTERNATOR PRINCIPLE


Moving magnet past a conductor indroces a flow of electrons in the conductors, this how alternator produce current. The rotating bar magnet, supplies a moving magnetic field. As it rotates the magnetic fieled passes through the two sides of stationary looo. At the top, as the south pole moves the upper side of the loop, current is induce in opposite direction,when the north pool moves past the upper side of the loop. The similar condition occurs in the lower side of the loop, but the direction of the induced current id reversed. The effect  is thatan alternating flows in the loop. If the current is strong enough, it will light the bulb in the load circuit.