Hai Hello Sir,

I want to know the basic principal, that how a variable frequency drive works & saves electrical energy ?

Please explain the modes of operation of a synchronous generator/motor/synchronous condensor. Please explain how the capability diagram fits in.

how can i evaluate human memory...whether she or he have good memory..

How To be an IBR Inspector?

Consider a pipe of wall thickness 17mm with 2" od & 10feet length closed on both side with plug having diesel inside the pipe.

And if we put the pipe in a liquid whose temperature is 95" celsius what will happen to pipe

Good day to all!

Anyone of this forum had a old version of ASTM C582?

Can you share it to me..

Thanks and Advance

Can we use SA-29 material as an alternate of SA-434

Please, give to know the differences between Ir and In in MCCB according to IEC recommendation 974-2.

Thank you in advance

Most newer wind turbines are designed for a 20 year service life. However, the fact that their gearboxes are expected to last only seven to 11 years portends a major crisis for the wind power industry. How can this be averted or accommodated?

The preceding article is a "sneak peek" from Mechanical

A recent book review of "The Lights in the Tunnel: Automation, Accelerating Technology and the Economy of the Future," talks about how automation and productivity gains are cutting manufacturing jobs — not only on the shop floor but in management's ranks, too. The book, written by a Silicon Va

Writing in an opinion piece, the editor of ControlGlobal notes that, "end users really hate standards wars!" But we've got just that in wireless sensor networks, where the WirelessHART standard is already in place (and approved by the IEC as the first global standard for wireless sensor networks), w

Would you get inoculated against HIV if a vaccine was available today? Recent research shows that many people would not due to perceptions of effectiveness and risk. Only 40% of people surveyed would accept a vaccine that is 50% effective against HIV, while 74% would accept a 100% effective vaccine.

Recently I was driving in a parking lot and someone nearly hit me so I swerved and nailed a curb on the passenger side. Over the next week I noticed my car pulling to the left more and more every time I applied the brakes. Soon after my brake pedal would start going to the floor. To resolve th

Hi,

Hypothetically speaking, if I have a diesel powered generator connected to my internal circuit at my house providing base load power, how/what do I do to enable the system to get excess power from the grid, ie use all the generation capacity present onsite and then rely on the grid to provide

Does anyone know of a calculation for minimum ligament distance between tube holes on a Section IV tube sheet. What are the parameters?

april05 is a hard-worker, but always makes time for blogging. Whether it is about his commitments as an engineer or his blog entries, he consistently puts 110% into everything he does.

Tell me about yourself (major, college, work experience)

I'm forty-three, and studied Me

Have owned this truck a couple years and made all necessary repairs since but have encountered a challenge on this one.

It's a 94 GMC Sierra. 4.3 Liter Throttle Body Injected Automatic. Mileage is 200+k and usually rides like a new one.

Everything seems 100% functional in that the truck wi

What are the acceptable fixes for a misplaced tube hole on an ASME Section IV boiler tube sheet. Can a properly beveled double V groove be used along the perimeter of the misplaced hole, welding in new steel (disk) into the hole. Then. redrill the hole in its proper place? Some of the new weld wo

Marketing at Globalspec has instituted and maintains through moderators control of the content of participant contributions to the CR4 forum.

What laws of the US, or international laws most influence what is allowed, or not allowed on CR4?

Should members of CR4 just help anyone do anything? S

I import and produce architectural items made from marble here in the states. I often am asked by customers to produce special gazebos and other items which require little engineering knowledge. Now I have a customer, who is one of my best, who asked me to build him a marble gazebo that mimics