what is the differnce between PLC & DCS

7 Answers   TVS,

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any body please send me the old question papers of ongc test.

0 Answers   NTPC,

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Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

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What is the definition of direct acting valve & reverse acting valve

2 Answers  

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What is use of condensate pot

5 Answers   Alstom, Petrocil, Samsung,

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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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Level in tank under vacuum (Ex: Condensate Tank of Power Plant)is measured using D. P. type level transmitter. Tank is subjected to vacuum of 755mmHg. Is it possible to fill wet leg ( i.e. leg connected to top of vessel with low point of D. P. xmtr) with water?. Are there chances of water getting sucked under vacuum? if yes, what is the solution?

3 Answers  

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How to calibration coriolis flow meter?

0 Answers  

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1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?

0 Answers  

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How do you calibration D.P transmitter? ?

2 Answers   Power Plant,

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hello can yoy pls send me previous papers of jindalpower and steel ltd.....'m from instrumentation..... mani1048@gmail.com

0 Answers  

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regarding level tx i would like to know how to select the range of the level transmitter in a closed drum(steam drum or deaerator)?

1 Answers  

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