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Instrumentation Interview Questions
Questions Answers Views Company eMail

what is plc? breif explain

APL,

3 6395

what is ment by PID controllers? explain with example?

2 6415

what are turbo generators?

1 3532

what is pneumatic control system?

APL,

1 5366

what is gas metering system? gas chromatograph? and gas compressors?

HPCL,

2449

what is HVAC?

1 5828

what is DCS and SCADA?

APL,

2 6221

whats the reason for control valve not installed -90degree (down position)

1 4910

What is the exact differences between HART,FOUNDATION FIELDBUS,PROFIBUS?

Jubilant,

3460

what diffrence b/w plc s7200,300,400

IFFCO, Reliance,

2068

What is the working principle of Dozing valve used in cement industry?

1 6139

If range of 3-15 psi, a multiplying relay with a 1:2 ratio would give what output pressure for 6 psi input?

1 4268

What is difference between reset and initialization in industrial automation?

Marafiq,

1 4734

If you calibrate a pneumatic pressure transmitter, how many adjustments are normally necessary or mandatory?

1 4446

i want use pressure transmitter for flow ,how?

Gasco,

5 10045


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

How an rtd work, and what volts/current goes to a rtd to measure the resistance?

1276


Where are oxygen analysers installed in cfbc boilers? What are their usual readings?

1536


Specific gravity.

1866


hi my name is rakesh patel i just complited my be in instrumentation & control now i am going to working as a validation engineer in a poject department so what is a scope in a future as a validation engginer ? what line is good for me can any bady give me complete solution please? your regard rakesh patel

1966


How to do gas analysers calibration in AUTO and Manually by using zero and span gas?

2343


what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?

2532


Why grounding is necessary? Give example with diagram.

2212


why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2734


What is zero elevation and zero suppression?

2165


What is instrumentation technologists and mechanics?

970


what is the difference between active & reactive power?

2193


can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.

2266


What is profibus?

1122


how many pulses are required by a ac induction servo motor of 4 poles with 50 Hz frequency to rotate by 1 degree?

2114


What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

2663