My friend has faced this question! I don't know clearly. So please anyone give me the correct and short answer to this question? What is variable frequency drive? Types, what is star to delta? Why this arrangement necessary?

5 Answers   Asian Paints, TCS,

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Who to difference between analog in & analog out in dcs?

0 Answers  

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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.

0 Answers   Yokogawa,

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why full bore ball valve is not used in steam applications?

1 Answers  

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What is the use of valve positioner?

1 Answers   CCIE,

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what will the sending unit in the fuel gauge utilizes?

0 Answers  

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why we use only 4 to 20ma other than 0 to 16 ma

5 Answers   Invensys, Systech,

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what do you mean by CJC (cold junction compensation).?

5 Answers   Jindal,

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what is puling in n pulling out in flame scanner system?

1 Answers  

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how pressure reduce through pressure control valve? suppose we have to reduce 20 kg pressure to 10 kg pressure , then what we do ? open the valve or close the valve , initially it is 20 % is upon ( for ur knowledge ).

4 Answers   TATA,

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Example of dry contacts & wet contacts?

3 Answers  

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What is the expansion of RADAR? How it works?

7 Answers   RasGas,

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