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

Instrumentation Interview Questions

Questions Answers Views Company eMail

how to commission furnace ( water heater)

Petrofac,

2047

Full form of KKS when use DCS.

3153

how to measure the output of RTD given the general formula of rtd.

2 6029

How to calculate the flow rate in Vortex flow meter?What is K factor?Can you give me an example calculation to understand the same as better?

npcc, Zadco,

1 4444

What is the potential contact / output??

Vasava Engineering Private Limited,

1 3127

How to convert 0-2500mmH2o into kg/hr? Or how to convert mmH2O into kg/hr,t/hr etc

2 38152

How many interlocks at turbine? Plz explain briefly

MRPL Mangalore Refinery and Petrochemicals Limited,

1954

In dcs contol valve parameters showing like this Gain=1 or 2 , ti=7 sec, td=20sec. But temp,pressure,level control valves we are using in which type parameter side using ti,td clearly tell me

1 4447

In field side transmitter voltage droping here no loose connection then what will happen?

Edac,

2 4824

how eddy current loss in probe and induced gap voltage accros probe trip and shaft

Reliance,

1 4345

how to adjust relay in smart positioner ?

SipChem,

1 3804

HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

ABB, NTPC,

2299

How to do manual mapping in radar type level transmitter?

2 13226

What is first echo & echo window in radar type level transmitter?

1688

What is frequency factor in massflow meter? When using frequency output?

PCMIL,

1862

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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?

1452

HOW TO SOLVE PROBLEM WITH ENRAF LEVEL TRANSMITTER 854 ATG THAT PASSWARD DO NOT Exist INTO TRANSMITTER TO ADJUST LEVEL WITH PORTABLE PET 847, WRITTEN WRONG PASSWORD , I AM SURE THAT DEFAULT PASSWARD (W2=ENRAF2) IS THIS TRANSMITTER NEED TO REPLACE SOFTWARE AND HOW?

3515

Please can anybody help for control valve sizing step by step procedure?

2125

flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty

2301

what is function of SCADA , and how is it work, explain with difination

2366

all types instrumentation questions want

2180

For what reason would you possibly be compelled to make use of a Smith Predictor. Explain the idea behind the operation of this device.

1927

principle of automatic votage regulator

2137

Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

2341

what is the importance of CV in the control valves? how it is calculated?

2442

What is the Working principle of Dozing valve?

2201

Which types of quections asked in interview for FORMULATION PLANT (PHARMA)

6704

What is Cavitation in a control valve?

2063

i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com

3172

full process of gas turbin?

2103

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