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L&T Instrumentation Interview Questions
Questions Answers Views Company eMail

Explain PID controller tuning & any one method used for it.

1 6536

Tell about your IFFCO plant visit.

1414

Explain Three way boiler.

2 5860

Draw bode plot of any transfer function. Why is plotting bode necessary?

1610

Explain any simple temperature control system.

3 6843

diff between neutral ,ground,phase , earthing and shielding?

1642

how to derive kg/cm2 to mmwc? complete derivation.

11 35513

for commissioning the DPT and Flow Transmitter , what kind of necessary activities we have to check and do? specially that orifice flange valve[ isolation valve}

1 7379

a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error

1626

In E&I diagram what is the meaning of rectangular box and circular box

3 8258

In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

6 6161

how to replace the smart transmitter software

1 2707

Why the Air Tank Accumulators required for the single acting actuators SDV's or BDV's as I see in some Schematic diagrams of ROTORK ??

2 8522

How to control flow variations in magnetic flow maters..... When i will provide proper earthing?

1538

For a diafhram 1.5 d =kn(p-p0) D4 Where d in deflection in inch k=constant n=no of capdule (P-P0)=Applied pressure in psi D In active dia at capsule. -1.5 d=k to p d being constant -1.5

1704

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L&T Instrumentation Interview Questions


Un-Answered Questions

What is the acronym for ansi?

403


Can you explain why your project needed xml? Or why you have chosen xml.

282


Can we install sql server 2016 on windows 7?

323


What is the difference between match and index in excel?

166


Explain fdd in gsm technology?

329






What is the function of cognos dispatcher?

368


What are system requirements for sap hana? : hana administration

42


Explain the difference between l1 and l2 cache? : .NET Architecture

359


What is correlated subquery?

1567


What are the differences between graph and tree?

442


What is the difference between rootscope and scope?

291


What's the difference between /^Foo/s and /^Foo/?

361


What is view group in android?

306


How to Administering Hadoop?

516


What is boolean flag in java?

362