Where & Why we are using SURGE PROTECTION ?

4 Answers   IOCL,

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what is meant by orderm of a system. will the stability of a system increases by incresing order of a system

1 Answers  

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how we can calibrate an Interface level transmitter online

2 Answers   L&T,

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What is the difference between modbus,fieldbus & profibus

0 Answers   NSL,

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i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.

0 Answers   OEG,

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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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cascade controller is feed back or feed forward or both

4 Answers  

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What is the relationship between GAIN and PROPORTIONAL BAND.

1 Answers   Kharafi National, Sabic,

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how we can check level probe and controller

2 Answers  

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please send the sample qustion paper for iocl written test ..

0 Answers   IOCL,

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how many type of control valve?

10 Answers  

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Why grounding is necessary? Give example with diagram.

0 Answers   Bright Point, DS Group,

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