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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 7822

Tell about your IFFCO plant visit.

2086

Explain Three way boiler.

2 7300

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

2533

Explain any simple temperature control system.

3 8843

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

2304

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

11 42129

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 8865

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

2290

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

3 10615

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 8748

how to replace the smart transmitter software

1 3774

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 11231

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

2328

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

2525

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L&T Instrumentation Interview Questions

L&T Instrumentation Interview Questions (36)

Un-Answered Questions

How to pass a cursor variable to a procedure?

1118

What are runtime exceptions?

1170

What is executive accounting?

1145

What is NOS?

1047

How many types of impurites in Related compound test?

1608

What is the best font to use for numbers?

587

What are all stats classes in the java api package available?

567

Explain the difference between array and linkedlist?

1005

How to define a service as rest based service in wcf?

866

What are the reasons for process termination?

1060

Can a rule be bound to any column of any data type?

970

Question for mech.engineer in dmrc

1874

Which command is used to delete a trigger?

1343

Is an exe a binary file?

1030

How to give user privilages for a db. Login as root. Switch to the mysql db. Grant privs. Update privs.

937