Instrumentation engineering interview questions and answers - part 6


Instrumentation engineering interview questions and answers - part 6

Part 1   Part 2   Part 3   Part 4   Part 5   Part 6

1. How can leveltrol be installed in steam drum for measuring the level of steam drum?
2. What is ultrasonic flowmeter?
3. Differentiate between ultrasonic flowmeter and radar type flow meter.
4. What is the use of temprature compensation?
5. What is modbus?
6. How signals can be taken through modbus?
7. How earthing can be checked?
8. How many ohms are required for proper earthing?
9. Explain signal isolator.
10. Which wiring connection is preferred in motor for industrial use?
11. What do you mean by trim?
12. How DP Transmitter can be calibrated for crude application in floating roof tank?
13. What is the principle of capacitance type level transmitter?
14. How process line mpm calculation is done?
15. Explain PLC Level and its type?
16. What is procedure on mmwc in to tph?
17. How an rtd work, and what volts/current goes to a RTD to measure the resistance?
18. What is consistency transmitter and describe its working?
19. How to calculate MMWC values into tonnes?
20. How can I make calculation to Install level transmitter (DP) for open tank and close tank?
21. What is difference between DO and DI?
22. What is loop1 and loop2 in MTS LT?
23. How to calibration a control valve?
24. What is dry leg calibration and where is it used?
25. How flow can be measured with dp?
26. Why MMWC unit is used?
27. How HART protocol can be connected with control valves?
28. What is the meaning of slope in PH transmeter?
29. What is Difference between PLC and CNC?
30. If we have 450 mm height boiler drum level, so what is span & zero value for a dpt transmitter?
31. How can level transmitter in closed tank application be used?
32. Why ac supply load cell is used? Can we use the dc supply load cell?
33. What are advantages and disadvantage of the ac supply load cell?
34. What is coriolis principle for mass flow meter?
35. What are the automatic controller MODES?
36. What is Cryogenic?
37. What happen if we install my pressure transmitter below the elevation of pipe in natural gas service?
38. What are the reliability data, like failure rate etc, for bently Nevada systems & vibration probes?
39. What is the meaning of wet leg & where is it used?
40. What are the key components of control loop?
41. Working principle of lvdt?
42. What is difference between differential pressure & delta pressure?
43. How to trim the pressure transmitter?
44. What are different types of cable?
45. What is the use of control cable?
46. Which type of diaphragm use in costic line, DM water line, natural gas line, oil line?
47. What are different types of valves?
48. What is the hydra step level sensor output value (measuring level of steam drum)?
49. What is mean by live zero and dead zero?
50. When a magnet is heated?
51. Why the degree of valve plugs and valve seat is slightly different I control valve trim design?
52. What is modbus, profibus, fieldbus?
53. What is the use of gauge?
54. How to calibrate differential pressure switch?

Part 1   Part 2   Part 3   Part 4   Part 5   Part 6

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More question about instrumentation

akshaya kumar naik 02-1-2018 08:16 PM

I&C interview questions

Really great and I have read most of it and good control to take an interview
Wonderful job, lots of thanks those who contributed

Roger 07-23-2016 11:36 PM


Bravo all who contributed

Emmanuel 09-2-2014 09:51 AM


i am happy about this questions because of i have a solved some doubts i hope to this one of the best site thank you.

prasad appadi 07-17-2014 12:07 PM

inst quest

nice collection of interview question.

a quadir 04-25-2014 03:43 PM

enhancement of technical skill

hi , really nice collection of field instruments i think so these are sufficient for an instrument engineer , i m really so glad after this questions.
bye and thanks

afsar mumtaz 12-11-2013 12:31 PM


it is very usefull for fresh canditate

sikkandar 10-22-2013 02:15 PM


I would like to say thanks because it is very useful for me

bhanwar 10-19-2013 07:27 AM

Inst Engg interview questions

It is commendable contribution to the Instrument community.

Ramesh 08-28-2013 11:37 PM

Questions of instrumentation

N0w i cn fce ma interview thnk u highly appreciated

Pretty 03-25-2013 04:50 AM

Thanks a bunch

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vaisakh 01-28-2013 02:16 AM

interview questions

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viral 11-22-2012 04:28 AM

instrumentaion interview question and answers

i would like to say thanks because it is very useful for me. this document will help to face the interviews.

krishnaprasad 11-11-2012 08:15 AM


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yogi 06-16-2012 02:20 PM


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