Instrumentation Interview Questions
Questions Answers Views Company eMail

What do you know about gail?

GAIL,

2020

What is DCS?

GAIL, Sabic, Trident, Yokogawa,

4 11313

What are the different types of temperature sensors and the principle they work on?

GAIL,

1 3830

What is an SCR?

GAIL,

4 7731

Hello friends i need check lists of different instruments during the Erection and commissioning in thermal power plant.Please help me.My Mail id is naba02222@gmail.com/naba02222@rediffmail.com Thanks Nabakishore Biswal

1 3337

Can anyone send most commonly asked interview question in Oil & Gas industry

1737

What is the working principle of Bentley Nevada 3300

SMIT,

1 1933

How to find out turn down ratio of Pressure transmitter?

1 9658

how to overhaul control valves.what are the proper procedures.

Jindal, QAFCO,

1 17985

wht is snap action switch?where it is used?is there any diff between snap action switch and normal pressure switch?

ONGC,

1 3229

the basic of a DP flow transmitter are the following

1 5318

the 3 most common transmitter protocol being in refinery or qatar gas and aramco.

Shell,

2461

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

1531

Meaning of the following a. IOP- Manimum; b. IOP- Maximu,;

1631

Possible cause of IOP alarm in a DP transmitter: a: IOP-minimum b: IOP-Maximum

4 34620


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Un-Answered Questions { Instrumentation }

Good evening all I need a small favour regarding reliance paper i wanna probable sample papers(e&i) of reliance. if any of u have any idea about dis then plz mail me back.i belongs to electronics and instrumentation engg.so i need e&i papers. thanking u....

1632


sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers

1848


How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer

2300


What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?

3419


Explain PID, ON/OFF, Controls

1562






flow transmitter formula?

2337


why we use cascade control and feed foreword control in 3 element control of boiler drum ?what is feed forward and cascade control system ?

1732


What are different types of cable?

642


control panel design guidelines

2835


please tel me the calibration of pneumatic controler.

1705


What is the use of control cable?

655


Draw bode plot of any transfer function. Why is plotting bode necessary?

1835


Isometric drawings are generated during _________________ phase of a project

1584


why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??

6810


Explain why use mmwc unit?

613