Answer / omak

By using orifice plate we can measure the differential pressure between the upstream and downstream. This diffferential pressure is proportional to the sqaure of the flow.ie Q2 = DP
(or) Q= sq. root of DP. So by using square root extractor we can get the volumetric flow.

Why boiler chimney area  oxyden sensor fixing? 

1 Answers   NTPC,

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can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know

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In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.

1 Answers  

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Name four general (not technical) criteria that would you consider important, when deciding upon a particular control valve?

1 Answers  

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In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.

1 Answers   India Cements,

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Can any body give detail about orifice sizing?

5 Answers   Essar,

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what is full form of NAK?

1 Answers  

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full process of gas turbin?

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An atmospheric storage tank has a diameter of 20 m and a height of 8m.It is half-full of liquid with the remainder of the space containing air normally at atmospheric pressure. If the connection to atmosphere is accidentally closed off and 10 cubic m of liquid removed, what happens to the internal pressure of the tank? What are the possible consequences for the tank?

1 Answers  

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what are the steps I have to deal with?

1 Answers   ONGC,

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how to rectify the problem ,if we erected the DPT instrument wrongly of hp on lp side and lp on hp side?

5 Answers  

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How to change dcs card in online. (Dsc is maxdna)

1 Answers  

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