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Instrumentation Interview Questions
Questions Answers Views Company eMail

How much flow is passing through 6 inch line? There are no gauge, no any transmitters in line.

3 4808

What is megering????

2 12983

waht is difference between pressure transmitter and transuducer

Gasco,

4 5791

There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

1227

what is input and output cards of plc needs to be hot swappable mean

1 4477

why magnetic flow meter is not used in thermel power plant operation

JK Paper,

2 5206

How does milli volt is created in themocouple?

Jaypee,

2 4809

How does pyrometer works?

1 5785

Why we are using temperature and pressure as a reference when measuring flow of steam?

Shell,

4 7261

What is Process portal A(PPA)?

ABB,

1 4656

How Many Slave Can be used in one slave ?

2 4049

what do you mean by cathodic protection?

Saipem,

1 4582

what is Best Among SINK Or SOURCE Type Design In Digital Signal, Either Iput Or Output? WHY?Can any one..

Accer, Reliance,

1545

what is the difference between transmitter and smart transmitter ?

Aditya Birla,

4 7040

what is loop folder?

Bapco Bahrain Petroleum Company, Hyundai,

1 23498


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Un-Answered Questions { Instrumentation }

Hi Friends i am going to write BARC written test by this month 20th (20-5-2008). So please if any body knows the details about this or having previous question papers pls mail me to kkumarei@gmail.com. For Suggestions give one message to 9962122264

1740


Isometric drawings are generated during _________________ phase of a project

1445


i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......

1410


How to Calibrate Vibration Probe (Axial, Redial) in field

433


how to do dynolab wind speed sensor loop test, how to simulate value,i have simulate mA 4-20mA but not responding in DCS faceplate, please kindly advice me any one.

406






A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

1532


what is KV and XV valve

1121


What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

2328


in sulfur process what is material of impulse line we use to connect with transmitter ? and does teflon affected by sulfur?

1658


how can be calibrate flow indication transmitter (rosemount) it shows excess milli amps nearly about 24 ma on full scale, but its scale was set on 20ma on full scale..???how can be simiulate..???

1795


what is the electrical operation procedure for switching on 27.6MVA electric furnace.

1436


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

2369


How we connect a instrument with ground, Give brief explanation with help of diagram?

1500


In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.

2299


I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

1208