Answer / ahmed allam

if you mean protection of for example power plant
so the most important parameter is scan time of
the controller must be very fast so action be very fast

whatis virtual instrumention?

5 Answers  

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principle of automatic votage regulator

0 Answers   Bhel,

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Explain the working of an electronic level troll.

0 Answers  

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where do you give the 4-20 ma i/p in a MIL control valve?

3 Answers   Siemens,

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What is the procedure of mounting new positioner on pneumatic control valve?

1 Answers  

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Why Bently Nevada use negative voltage for vibration probes?

4 Answers  

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Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor

0 Answers   CCIE,

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Any can guide for QA/QC Inspector in oil & gas region, the procedures, formats standards, design criteria, i search in all enginees but i can't found wat i need?????????

4 Answers   Aramco, Asian Paints,

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A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

0 Answers  

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send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com

0 Answers   HPCL,

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Q- Ordinary Water Tap is which kind of controller ? P , PI or PID i chose the option of ON - OFF type controller but ambiguity is that for different positioning of tap we get different flow

1 Answers  

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what is gas metering system? gas chromatograph? and gas compressors?

0 Answers   HPCL,

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