Hello all, I am currently working on a project where I am to analyze the rotation of a shaft in a particular piece of machinery and use this information to get a meaningful relationship between two other independent parameters of the machine. The rotation of the shaft is the only indicator that c

We have two different schools on this subject:

One: Substation DC battery rack metals should be better without bonding/grounding to the substation ground grid, because during the fault the substation area elevate on potentials so the grounding may affect the battery functionality.

I have to say i thought that the newer digital phones could not be tapped.

But it would appear under some circustances it can.

Does anyone know if this is true, or a con?

watch the video

I have to rebuild a small 2 stroke motor. It's only 25cc. Can anybody tell me where I can buy a piston ring for a 1 5/16" piston .046" thick. When I get one I can test it.

From EETimes:

Nanoscale coatings could boost the efficiency with which heat can be removed from semiconductors and other devices, according to an Army Research Laboratory funded study by researchers at the Pacific Northwest National Laboratory (PNNL) and Oregon State University (OS

When you have two 10A 24VDC power supplies in parrallel does the current double meaning 20Amps are available?

From Popular Science - New Technology, Science News, The Future Now:

It's a logical question. After all, it would be handy if every time the Hubble Space Telescope went on the fritz, an astronaut could reach out the window of the space station and give it a whack. Unfortunately, no

While measuring the resistance of a ground electrode by the three terminal method I got a lower reading when I substituted a long rod instead of the short spike supplied by the manufacturer. Is it because the top layer of soil may not be compacted sufficiently with the already existing soil in the n

Curious if anyone from industry has experience with these products. I have confidence something like this could work but I'm not sure on what time scale. Specifically, I'm curious for data on commercial microbe mixtures available for degrading spilled crude on saltwater surface or shore locations.

Should we check the characteristics of engine,alternator and the AVR or the curve showing drop in terminal voltage when applying a load ?

Hello CR4's

I have a Hammond power solutions transformer. (480 delta primary volts, 208Y/120 secondary volts)

It is being used as a step up transformer.

PN:NMK030KB http://www.hammondsales.com/pdf/section10.pdf (See page 16 of the PDF document SCD 21 for the wiring diagram

Hello to all.

Solar energy is alternate source for electricity. Why still every place, every house is not using all over the world? Is it having disadvantages or having some limitation.

"It has never been hard to gain Brooks Stevens's acquaintance, whether one is a coverall-clad mechanic or the president of General Motors. Along with an inborn civility and an interest in others goes an all encompassing enthusiasm and love for everything connected with the automobile, encyclop

How is ETL listing correlated to the IMC?

IOW, in the IMC p46, for a wall-mounted canopy, Light Duty cooking appliances, the hood requires 200 cfm/lf hood.

Compared to the ETL requirement of 150 cfm/lf of hood, but with 450º F max cooking surface temperature.

So to use the

From Chemical & Engineering News: Latest News:

With just a pinch of salt, a team of researchers in Japan have come up with an environmentally friendly catalyst to build 2,3-dihydrobenzofuran motifs via asymmetric oxidative cyclization of ketophenols. The team, led by Muhammet Uyani

From CBC | Technology & Science News:

A team of scientists flew to the Australian Outback on Monday and recovered a Japanese space capsule that they hope contains asteroid samples providing clues into the evolution of the solar system. The Hayabusa explorer returned to Earth ove

Once I have created a supplier list how can I save it and then access it later?

From Newlaunches.com:

Not wanting to alienate their technologically-ignorant readership, the New York Times has banned all usage of the word "tweet" from its articles, from now on. Phil Corbett, the Times' standards editor, has asked all Times' writers to avoid using any mutation o

From Autoblog:

Some of us might have become a bit cynical about "the Toyota safety story," but in fact there is one, and it was such a big deal that it helped get the Japanese carmaker to the top slot not long ago. As part of the rectification of recent events, Toyota is taking tha

Oh boy, it looks like a French psychiatrist actually bothered to psychoanalyze me!!!! What's more, he never even had me as a patient in his clinic!!!!

Ordinarily, I'd tell him to get a life, except that I doubt that's something that he'd be able to do, not after I force-strangled h