Why we use the double acting control valve in flow line?
Answer Posted / afroz
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Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends...
please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?
What is the right procedure for adjusting the gap voltage of bently nevada vibration sensor?
I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.
wich is coming the first HAZOP OR SIL
1. what is modbus cable? 2. what kind of communication we are using for the interface of DCS, ESD and Third party cabinets? 3. What is serial communication and peer to peer communication?
What is the procedure of calibration of Load cell?
what is sliding spool valves?
i need some objective type questions in instrumentation
what is insdustrial vibration.who it works. give atleast 2 types of insdustrial vibration
I want to know the questions asked in ONGC interview(after being selected in the written exam) for Instrumentation branch.Kindly help.
1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.
selection of the zener barrier for the hazardeous area zone 0
What is the difference between uv and ir scanners? and what is the workig principle of both
anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me