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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 7892

Tell about your IFFCO plant visit.

2131

Explain Three way boiler.

2 7382

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

2592

Explain any simple temperature control system.

3 8949

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

2331

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

11 42416

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 8958

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

2328

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

3 10710

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 8913

how to replace the smart transmitter software

1 3847

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 11322

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

2371

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

2569

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L&T Instrumentation Interview Questions

L&T Instrumentation Interview Questions (36)

Un-Answered Questions

What is the main difference between @requestparam and @pathvariable annotation?

500

Can we call a virtual function from a constructor?

1381

can i able to get bhel previous exam question paper?

2142

What are the different types of foundation?

1415

where do you see yourself 2 years from now?

1164

what is the input to be given in digital flow meter during the the calibration time?

2289

How do you combine 2 excel files and remove duplicates?

623

What is Power BI Q&A?

Why is sio2 layer formed over the entire surface in a monolithic ic?

1357

How can I evaluate an arbitrary python expression from c?

911

What is the use of cats?

997

explain email ports?

What is StepStatusGood, StepStatusFail rules?

599

What are the disadvantages of logical databases?

1286

What are string library functions(syntax).

1111