The word reliability is made from two words re and liability means repeated liability because of various breakdowns and failures of a device /system .The reliability & technology constitutes the core of economy and the development of the infrastructure of a system. Now-a-days, the technology without reliability is unthinkable. For a country like India with limited resources, it is all the more important to use its resources in a very optimal way to achieve higher production by having increased reliability of the systems/equipments