locomotive engineer license

Next to contact breaker, spark plug has become the weakest section of the ignition system. It is mounted within the combustion chamber of the engine, where working conditions are- severe. During peak combustion conditions the temperature inside combustion chamber in the modern car engine could possibly be around 2500 ºC along with the pressure about 7 Mpa. Moreover a spark plug can also be encountered with thermal and load cycling fatigue on account of sudden adjustments to temperature and pressure-from the high temperature of burnt gas for the relatively low temperature with the air/fuel mixture and from your underhand during explosion with the air/fuel mixture to low pressure during induction. In addition, the spark plug has got to endure high voltage, mechanical vibration along with the corrosive atmosphere of combustion gages. A modern spark plug comes with an economical life of about 10,000-16,000 km. Today, wedding bands are worn by men and women. It is considered as the symbol of love and dedication to each other. The history of men?s wedding ring just isn't as old because women?s ring. During World War II, men needed to leave their wife and grow from them in the battle fields for too long time. In order to keep the sweet memory of the wife with these, men started wearing rings. Later, the exchange of ring during marriage ceremony was introduced. And it is practiced till today. Men and women both wear rings nowadays.