What does Nominal size in a valve means like NG6,NG10 etc


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hi,i am sekar.i am prepareing Assistant Motor Vehicle Inspector in TN.Transport ,if any one have previous year model pares or some questions,pls send me at gpsekar2007@gmail.com.

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what is accilaration

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what is turbo machine

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Dear Friends I want to previous 5-10 years technical and non tech. question paper of section engineer (mechanical)of RRB and also tell me how should I prepare for S.E. and which books will help me for technical,aptitude,resoning.plz send me at bkcs.bkcs@rediffmail.com

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Compare the working principle of gas turbine of capacity more than 10megaW, diesel generator and wind turbine

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two boilers producing 10 ton/h steam one has 8 bar and second on 5 bar which will consume more fuel? and why?

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Oil melts, grease melts. Is there any other liubrication which is effect at 200 deg c?

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what is the purpose of wear rings in centrifugal pumps ?

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more base coross sectonal area object can stand steadly than a les cross section why

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Poisons ratio is higher in (rubber/steel/wood)

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what is a three step construction survey?

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