difference between reverse power and reverse current relay used on marine operations switchboard on board ships

Which protection is best for power transformer

If i apply a torque of say X Nm on the bolt (refering the bolt size and torque chart). What should be the loosening torque acceptable.

I was conducting a Hipot test on a 3 phase circuit consisting of 3 single core cables, 15kv ,120sqmm (250mcm) XLPE/PVC, with concentric neutral, 600m long , I was going to apply 64KV dc for 15 min ,I started with the red phase the other two cables Yphase and B phase are beside the red phase no

i need to convert a CR-41 petrol engine for LP GAS. will it damage engines internal parts or injectors long time. please advise.

Dear professionals,

I am dealing with a problem now regarding a motor fan. Before that, i am not an electrical engineering student, just a mechanical eng. student, basically already pass my elect. exams with flyng colors but I can't remember a thing now. Back to my quest., recently, I've been sea

Hi professionals. Is it possible if i paint the small scalce laboratory furnace in black color?? Will it affects its combustion performance?? And how do I achieve a good volumetric efficiency in my small scale laboratory furnace?

for my college project i m using the heat of exhaust of my bike..

and using it some other purpose pls tell me..does it effect engine efficency.

or back pressure or thrust of my bike????/

From New Scientist - Online News:

If your nation's border allows unwanted visitors through and foot patrols aren't cutting it, try a network of radar, cameras, agile robots and drones. A MIGRANT makes a furtive dash across an unwalled rural section of a national border, only to

From PhysOrg.com - latest science and technology news stories:

The project is being carried out by the Advanced Materials Innovation Center (AMIC), which belongs to an Incorporated Foundation called the Mie Industry and Enterprise Support Center (MIESC). The lithium-polymer batt

From MAKE Magazine:

It's that time! Top 10 astronomy photos of 2009... ...astronomy is so visually appealing as well! Colorful stars, wispy, ethereal nebulae, galactic vistas sprawling out across our telescopes'¦ it's art no matter how you look at it. And our techniques for view

From CNET News.com:

For years, any serious discussions about the earliest microcomputers had to include the Altair 8800, the creation of Albuquerque, N.M.'s Micro Instrumentation and Telemetry Systems (MITS). That computer, as has been well chronicled, inspired legions of hobbyists

From Wash Post Technology:

There probably are just two times when you think about a traffic light. When one just turned yellow. ("Can I make it?")When one has been red for too long. ("Come on, change!") Traffic lights, on the other hand, are much more thoughtful about you. They

I have Googled, but I am looking for a reliable source of info, from someone who has access to scientific journals.

What are the specific effects of Terahertz waves on DNA or living tissue?

in trafo we have seen that rating is generally 220/34.5 KV, 33/6.9KV and 6.6/0.433KV.

34.5,6.9kv etc are no load voltage we know.

now my question is what basis 34.5KV comes from 33kv. same for 6.9kv from 6.6kv and 433v from 415v. plz reply.

The electronics boards to repair the detecting the specific component with short circuit betwen GND with Vcc is a big problem.

I´m needing the informations about how does working a equipment used for detecting the short circuit in electronics boards (eg Toneohm 950).

Regards

Antonio J

dear sir,

i want weight chart with drawing.

thanking you,

for kunta international

balram singh

9313035501

I would like to know the purpose of valve rotataors used on some engines

hello everyone!
I installed Solidworks 2006 and this is itself COSMOSXpress, but I need COSMOSwork!
How can I upgrade? I now that exists in soliwork directory a folder for COSMOS and other for COSMOSXpress?

Thanks

Whats the bandwidth of the electromagnetic pulse wave???