Answer Posted / akash
When a fast flowing fluid in a pipeline encounters an obstruction, it bends its or skids over the encounter. Normally this encounter is known as an orifice. Here, the fluid flow diameter attains its minimum diameter just after the orifice/obstruction. This region is called vena contracta. The exact distance of vena contracta from the orifice depends on variety of factors out of which the velocity of flowing liquid, pipe dimension, orifice dimension (or beta ratio), viscosity are most crucial.
http://www.google.com.au/imgres?imgurl=http://circ.ahajournals.org/content/97/16/1597/F1.large.jpg&imgrefurl=http://circ.ahajournals.org/content/97/16/1597/F1.expansion.html&h=937&w=1800&tbnid=n0uZRwtoOq42yM:&docid=VSBT8zCOz274MM&ei=GxMeVp7LFYTgoAT01rLoDw&tbm=isch&ved=0CB4QMygCMAJqFQoTCN7EsLjGwcgCFQQwiAoddKsM_Q
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...
Any body have know try work calculation ???
Can I route 110 VDC and 24 VDC in a same Duct for our Interposing relay cabinet? IF yes or NO Please provide me IEEE Std. for the same. Please i required it on Urgent basis, i need to design IRP Cabinets and we have MCC 110VDC and Our Coil side is 24VDC, Please help as soon as possible.
what is effect of specific gravity in differential level transmitter , explain formula related with this .
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
Please any one can provide latest aptitude test,technical test and interview questions for tata consulting engineering (TCE) i need it asap thanks in advance
why we use the ac supply load cell>?can we use the dc supply load cell?advantages and disadvantage of the ac supply load cell?
What are the interlocks we have to check during the start up of LP/HP compressor?
how many types of preheaters are in cement industry & what r they can any body explain?
What is super thermocoupal?
How to measure the dust in chimney(spm)?
What is heating effect?
, Instrument Index, P&ID review, I/O schedule, datasheet, DCS / Analyzers specifications, loop diagrams, hook-up drawings.
Which language of programing is popular? how can i learn it ?
What are the type of bonnets in the control valves?