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

Instrumentation Interview Questions

Questions Answers Views Company eMail

what is piezoelectric transducer?give an example in power plant n state its principle?

Jindal,

2662

what is the formula for changing Range of Transmitter from X mmwc to some Y mmwc with respect to DCS NCMH flow range from x NCMH to y NCMH?

HCL,

1 5745

i feel sq. pipe is better than round pipe pls give comment for this. advance thanks for reply

3 5801

can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?

TCS,

4781

What is negative range in transmeter?

TCL,

1 6675

What is DeltaV?

2 12952

what is the full form of psig.

8 25368

how to measure level under ground tank ? which type of transmitter very accuracy ?

Biocon,

3 9267

With N nodes and B branches what will have a network ???

BSNL,

2077

Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...

Adgas, GAIL, Oil India, ONGC,

2396

Can you tell me how we will select RTD and Thermocouples for Temperature applications. I.e How we will choose accurate one for a specefic operation if both having same ranges

Nippon,

3 8777

what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.

2837

what is the difference between profibus and controlnet networking.

HZL,

3284

how to check diode wheather it is working or not by using multimeter?

3 7806

wht is mean by dpt(differential pressure transmitter)

1 5597

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Un-Answered Questions { Instrumentation }

the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

1752

How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.

2191

POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?

2337

hello friends, can you please send me the model paper or question paper to be prepared for hpcl examinations????????? You can mail me at rahim_here@yahoo.com waiting for your reply........... help me .. plz.....

2649

Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.

1977

Explain the working principle of lvdt?

1248

SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

2432

what effects a surging can produce in the compressor

1977

Can combine control system for Emergency control system (ESD)and Fire & Gas System ( F & G) is possble to built and offer to client? Can such system is as per Norms in India?

2045

In most instances, Inertia processes are quite uncommon. Give an example of a combined Resistance and Capacitance situation.Describe an application, which according to your understanding of the subject matter, comprises of both Resistance and Capacitance effects.

2070

what is the procedure for auto tune in masoneialn 12300 series displacer type transmitter?

1688

Any one can help me to identified, how can we interchange the device in FF

2840

what is droop in governer ,type of droop ,how it work

2207

If P will increase then what will happen with PID?

6149

What is Erosion in a control valve?

2193

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