Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

what should be the distance of vibration sensor & to the point where vibration to be measured Ex turbine axial displacement

3 7956

d/p flow transmitter LP side give to pressure.what you geting out put ? how you get(ma)?

ABB,

6 13807

what is the process to make control schematic ?

2257

WHAT IS A CALLIBRATION? WHAT IS MEEAN BY LOOP CHECKING INCLUDES PRESURE, THERMOCOUPLE,TT,DT?

5 11069

How to ensure vibration sensor functioning accordingly.With out using an other sensor.

ACC, Oil India,

3 8318

in instrumentation why we are using 4-20mA , why not voltage ? if somebody design a instrument which works on voltage then can we use that instrument?

6 11632

how flame detectors sense the flame.

3 7644

what is the working principle of ABB gas analyser of kiln in cement industries

4 18049

what is pico fuse? how this different rom othe fuses and how to locate it inside the card?

1 4097

which type of rtd is good for any system,2wire,3wire or 4 wire

9 15608

what's the minimum level required of SIL (safety integrity level)to use fire and gas system?

L&T,

2 7040

What is the formula To convert Degree centigrade to foranhight.

5 10366

What is the formula to know the error of weighfeeder after having drop test.

3 30248

what is the difference between the microcontroller and PLC?

HAL, Havells,

9 37408

Explain Split Range Control In Control Valve Briefly.

5 30468

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Un-Answered Questions { Instrumentation }

Can anybody tell me how to select the size of earthing cable for DCS & PLC system.Please tell me any relevant answer here or mail it to me.

2205

How to Calibrate Temperature Switch in field

1320

What should be the main consideration while starting the Rotating compressor when we dont know the cut in and the cut off pressure setting of the pressure switch

2219

where proximity sensor installed on tank in loading arm application

1967

Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

2124

What are the different types of thermistors used in industries? How to the operation of typical thermistor?

1973

How many interlocks at turbine? Plz explain briefly

1966

what is actual drum level and compensated drum level?

2236

I have got a call of IOCL interview for projects having 2yrs experience. What sort of questions should I expect in the interview?

2076

how many types of viberation transmitter and how to calibrate and where use of vibration transmitter

2144

There are many type of control cable like pair,core,tried, What are defination each one

2158

Please any one can provide latest aptitude test,technical test and interview questions for tata consulting engineering (TCE) i need it asap thanks in advance

2038

a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error

2287

How to calibrate the flow transmitter

1613

Explain about the leakage class of the control valves

2002

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