Follow Our FB Page << >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

Instrumentation Interview Questions
Questions Answers Views Company eMail

why can't we use 5-20mA standard or some other instead of 4- 20mA?


6 10887

Which language of programing is popular? how can i learn it ?


suggest a sensor to measure rapidly varying temperature?

1 2892

please tel me the calibration of pneumatic controler.


how pressure reduce through pressure control valve? suppose we have to reduce 20 kg pressure to 10 kg pressure , then what we do ? open the valve or close the valve , initially it is 20 % is upon ( for ur knowledge ).


4 5402

what is the analog input , analog output , digital output, digital input geven to the MSSV , CBD, IBD , START UP VENT , BOILER FEED PUMP , AOP, CEP , ETC

Bharat Biotech, TATA,


When cryogenic control valve will be applied?

1 2697

wht is dcs architecture ? can u give example?

3 6925

pressure switch range 0 to 2bar.i have to install from ground level to 5 meters height.what is the formula the to increse the range ? and every 1 meter how much pressure should be add ?

3 3920

My friend has faced this question! I don't know clearly. So please anyone give me the correct and short answer to this question? What is variable frequency drive? Types, what is star to delta? Why this arrangement necessary?

Asian Paints, TCS,

5 6001

Qatar fertilizer call me for interview as Instrumentation Project Engineer. Please let me know what kind of question they asked ? ALso they said they will take Written test, any idea about this written test ?


1 6987

What is cable size for intrenal wiring in DCS or PLC ,from any card to Terminal amd Why

2 7891

what is plc communication?


2 4111

what is pressure control

GNFC, IBM, Privi Organics,


What is the difference between PLC and DCS?


4 11335

Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

If relative y axis vibration sensor is by passed, and relative x axis and absolute sensor is left working. how much monitoring i would have risked?


Specific gravity.


why I need valve guard and whats different between guard and positioner ??


what diffrence b/w plc s7200,300,400


key phaser where is use and work


How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?


1)How many tpes of vibration probe and how many tpyes of vibration. 2)how we can calibrate a vibration probe with tk3 3)what is RMS value in vibration measuring application and how we calculate it.


what are the steps I have to deal with?


what is a half wave, full wave, and bridge rectifer.


Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?


What is motion balance principle?


how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.


What is force balance principle? State some of its’ advantages.


how to control pid


I want to know the questions asked in ONGC interview(after being selected in the written exam) for Instrumentation branch.Kindly help.