Engineering and Technology

What is air circuit breaker. Electrical protection What is air circuit breaker or ACB: Air circuit breaker or ACB is electrical protection device used in electrical system to provide electrical circuit isolation in case of short circuit or over current condition. Also the air circuit breaker or ACB is used to isolate the electrical circuit manually when it is required in case of maintenance on the connection equipment or if it is needed to stop the equipment for long time. Air circuit breakers are used on low voltage like up to 700v and currents from 200A to 6200A. Some air circuit breakers are especially designed to meed voltages up to 1000 volts. Such circuit breakers are designed for the control of photo voltaic or solar systems. Air circuit breaker named because the media used between the contacts for quenching arc on electrodes during circuit making and breaking is air. The contacts operates in air. Sometimes this is just normal pressure air and some times it is pressurized ai...

 How to change Toyota Corolla engine oil Toyota cars like Toyota Corolla or any other brand needs 5w-30 grade engine oil. There are different myth regarding Toyota Corolla engine oil change interval. Some says change oil each 5,000 miles. Some says change oil after 15,000 miles or after every six to ten months. And some says whatever come first.  Such are just assumptions and there are no pet and fix formulas or rules. Better is to change oil at its earliest. The oil change interval should not be very short that someone consider it after 10 miles! and shouldn't be very long like someone consider it after 15,000 miles. It should be somewhere in between. Better if someone consider Toyota Corolla oil change after completion of 2500 miles. Also for the purpose an average price oil should be considered. Because if one consider high priced oil, the oil change will become very expensive will be difficult. There is a another myth about Toyota Corolla engine oil grades. Some says ...

  Advantages of Iron Phosphate batteries World class new generation Lithium Iron Phosphate batteries whose chemical name is LiFePO4 or LFP for short provides great benifites and advantages over conventionnal lead acid batteries and the rest of other all kind of batteries available. The Lithium Iron Phosphate batteries offer advantages like greater safety, Improved efficiency of charge and discharge, Less in weight, Very long life, no maintenance requirement and much more. With all above advantages, price is the big disadvantage of such Lithium Iron Phosphate batteris. Lithium Iron Phosphate batteries are not cheaper. They are much more costly than lead acid battery, Ni-cal Cadmium batteries or regular lithium batteries. But keeping in view of Lithium Iron Phosphate batteries benefits and advantages like very long service life or 20 to 25 years, one can make his life best investment in such Lithium Iron Phosphate batteries. Lithium iron phosphate HIGH efficiency Lithium Ir...

 Throttle Body cleaning washing DIY procedure If car maintenance is considered timely, it reduce the downtime cost, fuel running cost and increase the vehicle service life. Also if you consider the timely maintenance your car will be more promising and more cooperative to you. In car maintenance some parts do need replacement and some only needs cleaning. Debris, dust and dirt settling on the car components leads to a major car maintenance job and serious repair work. Throttle body is the major part of newer cars which needs periodic and regular cleaning and washing. Throttle body is located in the engine air intake system. All the air sucked through the engine passes through the throttle body. A throttle body passes 10,000 liters of air to burn 1 liter of gasoline or petrol. Although there is an air filter installed in the car air intake before the throttle body, but fine dust passes that filter and accumulates in the throttle body. Throttle body clea...