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Instrumentation Interview Questions
Questions Answers Views Company eMail

what is the diffrence between plc&dcs

HCL, Hindustan Zinc,

4 10106

what are the basic instructions used in simatic s7-300 plc?

Dr Reddys, HZL, Siemens,

5 11689

What is the deffernce bet. Instrumentation and Electrical Enginerring?

1 4858

How many types of Control Modes in process control, plz tell me all.....?

2 11588

purpose of absolute ppressure transmitter applcation?

1 5151

difference b/w single acting and double acting actuator by using application only?

McDermott,

2 38623

what is absolute pressure and where use in process?

3 9007

i have one tank of 500mm height, which is in under vacuum of 735 mmHg, I want measure level of the same using DPT , SO WHAT WILL BE THE URV & LRV, DENSITY OF THE TANK FLUID IS 0.95. is there necessary to fill the LP side with fluid.

7 17217

WHAT IS THE DIFFERENCE BETWEEN A TRANSMITTER & A SMART TRANSMITTER.

8 43140

what is Potential free contact? where it is used?

Engineers India Limited,

3 33079

how to calibate level transmiter ?range -150 to +150.what is the zero and span?

1 7630

Working principle of vibration sensor?, Type of vibration sensor? , Can we use vertical instead of horizental or vice versa?, if not Reasons?

2 11724

can any one pl explain me in brief that how we select the leakage classification in valve,means for liquid or gas there is any standard for selecting leakage classification or its depend upon valve size or any any other parameter.

3 5946

Foe selecting control valve if i have the min,normal & max data of flow rate,inlet pressure& outlet pressure,inlet tem.&density than how can i assure that these data are correct,pl. let me know if therew there is any method to check it.& also how we assure that the Cv we get from this data is suitable for valve for controlling require flow.

HPCL,

3 11592

Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com

IOCL,

1 2475


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Un-Answered Questions { Instrumentation }

please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com

1751


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......

2163


can any send me a forbes marshall dtron 316 manual

2049


please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...

2077


Punj lloyd is coming in our Jadavpur Universtiy campus for campus placement. Please send me some hints about the writtend exam. My email id is subratafriends@gmail.com

2949


hye SAM acn u send your e mail id, so that i can solve my query through e mail?

2349


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.

2263


give me all the details about the interview and which type of question being asked

2302


pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

3230


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

2397


I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

1839


DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.

1990


What are the key features of a Distributed Control System? describing the various layers (sensor through to business system interfaces) as well as the hardware, software and security aspects of the DCS.

2298


use of split range ? where it is used ? in which control loop it is used ?

2045


Question on maha cement

814