In E&I diagram what is the meaning of rectangular box and circular box

3 Answers   L&T,

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the output of the common trasmitter protocol in qatar gas are the following

0 Answers  

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Steve said that "An eddy-current probe works by passing an alternating current through a coil of wire and measuring the coil’s impedance" while we are using -24 Volt DC , So I am confused about DC and AC. Plz .

2 Answers   Jindal, Sadara Chemicals,

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please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826

0 Answers  

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SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

0 Answers  

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Draw a complete P&ID of a flow suction tank indicating all control & protection equipment. Indicate all its inlets and outlets. Explain the controls for this system

0 Answers  

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Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection

0 Answers   CCIE,

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is motorized valve closed when power shutoff?

0 Answers   Unilever,

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Why is a dead weight tester so called by that name?

1 Answers   SGS,

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What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?

0 Answers   KNPC,

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what is plc? breif explain

3 Answers   APL,

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how does we do bench calibration of a differential transmitter.

1 Answers  

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