The old welding machines used electromagnetic winding to step up the current for welding rods. What is the new principle inside the welding machines?
4 18319why the head portion of the screw jack (which carries the load when not rotating) is made hollow?
876Q : How to calculate cooling water pumps head, do I need to consider static head and frictional loss of the pipe with high elevation? I mean to say is discharge pipe branches to several elevations and joins to the cooling water return line. The highest elevation pipe goes to a heat exchanger at (xx) psi inlet pressure. Should I consider only pump discharge header and this piping for head calculations? How about frictional losses in return pipe? Pressure recovered in return piping is good enough to make it back to the cooling tower?
1 8115Would you please provide me with questions collected for interview regard to pressure vessel, which is in the aspects of welding, NDT, materials and painting? Please send these questions&answers to lgx_jasmine@126.com within 1 week, Thank you for your help. Rgs!
669Post New Mechanical Engineering Questions
Temperature closer for brazing operation is-------
how to calculate bearing pre-load?
wap to insert an element in array at a particular location
How i injecter setting qsk series cummins engine and i can using click type torqurench or dial gauge type
is there a future for a mechanical er. in supplier development field ?
What is the trunk type and crosshead type piston
How to Track the Inventory Items that are avaliable past 15years.
When mesuring the flow of liquid what are the two things to measure?
meaning of 125kva DG
Find the greatest and smallest number among the given 5 numbers without using ‘>’ or ‘<’ operators
What is the furnace Oil viscacity
why we use kg/cm2 in pressure gauge not kg/m2
• How can you justify it?
Name the four most important components of a Freon refrigeration system.
What is the difference between a mechanical engineer & a Marine engneer?
