wind wind wind

hi can any one tell me the advantages of ac excited synchronous generator and a mosfet inverter, more specifically to its usage in field modulated generator scheme of variable speed constant frequency system for wind energy

coupling sytem that can be used in lpg

hii guys

presently i am working in lpg storage and de3spatch terminal.In truck loading truck connection and disconnection time is taking too much time.i would like to know about if there is any coupling system that can be used to reduce truck connection and disconnection time.

Wood joinery

This might be the wrong place to ask this question? But you guys on here are pretty resourceful to say the least. We occasionally make a wood joint (not decorative & usually not seen) where we take a 3/4" thick board or piece of plywood. Say 4" wide x however long & at the desired location

Marine Fuel Polishing and Transfer Systems

Earlier this year, Algae-X International developed a new line of Fuel Polishing and Transfer Systems. The design is modular so that the proper system can be chosen for each marine application.

Fuel stability in general has not improved in recent years, while engines have become much m

Help with my 1984 Datsun Nissan 200SX

I have a 1984 Datsun Nissan 200SX that I inherited from my mother who in turn inherited it from her mother. It's in good condition, save some faded paint and a dent in the side where my grandmother hit a golf cart (long story).

I, in turn, passed it along to my son and it's been a good

Flying speed of a Butterfly

When i traveled in a High Speed Train, i saw a butterfly flying normally inside the train. when it reached outside the train window it disappears from my eyes. that means it was suddenly away from the window. Somebody please explain me that how can it fly normally inside the 80 kmph speed train.i co

High tensile Steel

I am in a need to find a steel (forging) with

a) Easy availability preferably with DIN/ISO/AISI number

b) High Tensile strength >700 MPa

c) Easily weldable

However none of the steels seeme to match (b) and (c)

Most of the steels of (b) seem to need Annealed condition for

J.D. Roth on the Rewards of Making

From Boing Boing:

J.D. Roth of the excellent personal finance blog, Get Rich Slowly, read an advance copy of my forthcoming book, Made By Hand, and wrote a great post on the rewards of spending more time making things. He starts off his essay with an homage to his late father, who