what is the mean for RB DIA 20 material can your pls answer me this question

i have a APC 5000 ups that is not working properly i have found that its batteries are not charging. what will be the solution?

dear sir

i want to know how to calculate the volumetric and mechanical efficiancy of root's blower and also the gd square value of the rotor.

dear all,

I am new subsciber,

tow days ago I posed a "Question" and received a reply from someone asking for more details, and I don't know how to post my reply to him, I don't find the "reply" bouton or any apropriate hypertext link

I can only see "Rate" and "report" boutons

I h

difine hart communication protocol and field bus protocol and its application

I've downloaded Oracle 8i in my PC and then downloaded Developer2000 in my PC. But I've failed to establish the link between back end and front end tool. One of my friend told me that I had to download the developer first and then the Oracle. Pls tell me how can I establish the link in current condi

what are the problems with fitting in an oversized compressor on an Air conditioning system?

HI,

can someone tell me that what is the most feasible and economical engineering practice to overcome surge pressures in a pipeline system...........???

I bought a Windows 7 laptop with the new Spider Solitare, and I don't like it. I play the four-suit game, and can usually win one out of ten on my XP-based desktop PC.

But the 7 version is awful. I run streaks of 25 or 30 losses at a time. When I clear out the statistics and start over, I c

In any rotating machine, let us say a gear box, what is the acceptance criterion on radial and axial run-out on output flange?

It is a low speed gearbox (1000 RPM / 40 RPM), quite large (power transmission 500KW-700KW)

There are good vibration acceptance levels - VDI, DIN.. have them.

This is a take-off from the discussions in the Weight Lifter Challenge blog, but I'd like to start a discussion devoted to a practical way to understand measurement error. I think I generally understand the subject, but I can't explain it clearly and sometimes I don't know which way to use it. So, l

hiii guys

i want to know about excess flow check valve used in lpg tank truck.how much

does it allows per minute.is it a plug type,flage type,or some other type.

plz reply

we have 24v ,1A

magnectic breake for winder application.so can i give 24V supply to coil by SMPS?

Hi All:

We have several 1500 Hp General Electric motors running off VFDs of which half have failed with bearing/seal problems. Vibration and oil analysis trend good, then sudden catastrophic failure. My question is, have any of you see these failures recently? Our older motors are running w

advantages of vvvf drive against dol starter.

Dear Fred:- Can you give me the part number for a roller with 6mm spindle? Regards Del

No reply

Dear Harry:- Can you give me a part number for a roller with a 6mm spindle? BTW. Do you have any life test data on that part? Regards Del

Dear Del:- Very busy here our

My friend has a street bike SUZUKI 110CC. Some people said to him that don't open the throttle after first kick when start the bike in morning. Start the bike and remain it running in idle mode. When it warms up, then you can open the throttle. There argument is that this engine has a combined oil s

After weeks of hand typing in tons of data from several years pre-dating my collection of fairly current digital update files, I find myself locked out of the file.

When I attempt to open the file and enter my password, as I have done for several weeks now, I am now presented with this po

what do you mean by flying lead thremocouple ? when and where are they are used can any one explain with example

i have the PLc 5/20 allen bradly for automatic operation of DG set when grid fails.From last few days i have been facing the problem that the program of the PLC lost after the one time operation as grid fails.

do u know why the program is getting lost.