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

Instrumentation Interview Questions

Questions Answers Views Company eMail

what is the diffrence between plc&dcs

HCL, Hindustan Zinc,

4 9791

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

Dr Reddys, HZL, Siemens,

5 11386

What is the deffernce bet. Instrumentation and Electrical Enginerring?

1 4700

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

2 11418

purpose of absolute ppressure transmitter applcation?

1 5003

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

McDermott,

2 38392

what is absolute pressure and where use in process?

3 8795

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 16843

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

8 42690

what is Potential free contact? where it is used?

Engineers India Limited,

3 32757

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

1 7472

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

2 11560

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 5782

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 8319

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

IOCL,

2314

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Un-Answered Questions { Instrumentation }

what is the process for double acting cylinder pneumatic for 32' v/v

2080

how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?

1902

How would you choose differential range?

1174

any body please send me the old question papers of ongc test.

2099

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

2144

what is the procedure of O2 sensor(ABB) calibration?

2192

What is limitation of the ht.of the displacer of a level trol?

2402

What is 3 element control system

1497

which type of signal used in instrument?

9864

Speedtronic system .

1980

it is possible to check the fail safe condition in pressure transmitter. if possible how?

1415

what is sil (safety integrity level

2741

Why mixer nd grinder Is example of constant torque load not variable torque load ???

1961

what is the process to make control schematic ?

2257

What is the start up procedure of desalter

3686

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