Answer / Durgesh Mishra

Questions asked in an ONGC interview for the Instrumentation branch may include topics such as:
- Basic principles of instrumentation and control systems
- Process control valves, actuators, and transmitters
- DCS (Distributed Control Systems) and PLC (Programmable Logic Controllers)
- Field instruments like pressure, temperature, flow, and level sensors
- Calibration procedures and error analysis
- Safety instrumented systems (SIS) and functional safety

typical loop drawing of a simple feedback control comprising of one transmitter and one control

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in which application we use bigger size actuator

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We are used ABB 800xa 5.1.please tell me how to instrall this.

1 Answers   TCCL,

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What is the syllabus for Instrumentation Engineers, who wish to join the Public Sector Units??

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For what Wake Frequency Calculation is used?

3 Answers   Reliance,

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whats the problem will arrise if we rotate the hosing screw of the differential pressure transmitter?

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What is the function of positioner in control valves? does the control valve operate without positioner?

3 Answers   Hofincons,

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what is the difference between PLC & DCS

17 Answers   L&T,

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hi i'm an Instrumentation student,i have one doubt that we can call- > computer science as CS > Information science as IS > Electronics & communication as E & C In the same way what is short term for Instrumentation....?

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i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

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i am preparing for BARC ,so plz mail me how to prepare for BARC. ALSO IF POSIBLE SOME RELATED QUESTIONS. MY MAIL ID IS khushi_4uall2003@yahoo.co.in

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what is Automation?

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