Sizing Of Diesel Generator Size a diesel generator for following electrical load. Future  load expansion is 20%. Average use of equipment is 0.8. 1) 5 No. of 1 Ph, 230 V, 100 W, CFL bulb, diversity factor is 0.8, starting and running pf is 0.9. 2) 3 No. of 1 Ph, 230 V, 2500 W, Air conditioner with diversity factor of 1, starting and running PF is       0.9. 3) 4 No. of 1 Ph, 230 V, 600 W, halogen lights. Diversity factor is 0.8, starting and running PF is 0.9 4) 2 No. of 3 Ph, 430 V, 15 KW motor with Y-D starter having diversity factor of 0.8, starting P.F is        0.8 and running P.F is 0.9. 5) 2 No. of 3 Ph, 430 V, 100 KW, motor with soft starter having diversity factor of 0.8, starting P.F is      0.8 and running P.F is 0.9 Starting Current of linear and non-linear loads Type Of Load Equipment Starting Current Linear Load General 100% of full lo...

Every metal have its own physical, chemical and mechanical properties. Brittleness, Creep, Ductility, Elasticity, Fatigue, Hardness, Malleability, Plasticity, Resilience, Stiffness, Toughness, Yield strength are the some mechanical properties of metals. In this post I am specifically going to talk about Hardness. Hardness A material’s ability to withstand friction, essentially abrasion resistance, is known as hardness  cutting tool would break apart if specimen have a more hardness than tool itself. That's why drill bits and cutting tools are made of hard metals, harder than the specimen. More Hardness Doesn't Mean More Strength Glass have a more hardness than steel in general. It is harder to scratch glass than the steel because glass have a higher hardness. Hardness in Steel Steel is an alloy of iron and carbon. Iron have a very low hardness but addition of carbon increases the hardness of iron making it steel. Heat Treatment (hardening, case hardenin...

Railway is one of the most ancient form of long distance transportation. Many developments has been made to railway throughout the time. Wooden trains were the oldest and they're the first kind of trains which was used to pushed by animals and humans. Speed is always a concern for railway they always want to achieve higher speeds. To achieve high speed the High Speed Rails (HSR) has been developed. First High Speed Rail The first Electric HSR was introduced by Japan on 1 October 1964, Japanese national railways started the operation of a fully brand new 515 km standard gauge line, the Tokaido Shinkansen , from Tokyo Central to Shin Osaka. Tokaido Shinkansen had the Top Speed of 210km/hr. Development  After Japans Tokaido Shinkansen success, many other countries adopted HSR system. Now, only 16 nations have HSR system. China has done a lot to their transport system in last 15 years. China began planning for its current high-speed rail system in the early 1990s, mo...

PV SYSTEM DESIGN (Grid Connected System) Maximum efficiency of PV system is 18.62% Sizing Example-Load Item Quantity Power per item (W) Total power (W) Time of use (h) Total energy (Wh) LED 5 20 100 4 400 TV 1 120 120 4 480 Computer 2 130 260 8 2080 Total 480 W 2960 Wh Equivalent Sun Hours = 5 h/day Solar Panel Specifications Power output (Wp) = 240 V mpp (V)            =      48                           I mpp (A)             =       5 V oc (V)           ...