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Instrumentation Interview Questions
Questions Answers Views Company eMail

what is plc? breif explain

APL,

3 3931

what is ment by PID controllers? explain with example?

2 4482

what are turbo generators?

1 2111

what is pneumatic control system?

APL,

1 3733

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

HPCL,

1552

what is HVAC?

1 4491

what is DCS and SCADA?

APL,

2 4325

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

1 3371

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

Jubilant,

2587

what diffrence b/w plc s7200,300,400

IFFCO, Reliance,

1259

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

1 4579

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

1 2852

What is difference between reset and initialization in industrial automation?

Marafiq,

1 3240

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

1 3198

i want use pressure transmitter for flow ,how?

Gasco,

5 6862


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Un-Answered Questions { Instrumentation }

what is the reason while warning lamp is on while the engine is cranking?

1176


Explain about safety integrated level protection? . How it was differ from other protections ?

852


I want to apply for the universities in US,but i got the GRE score of (650+300=950)TOEFL 69/120.Is this score sufficient for applying universities please i am married i need to go to US because my husband didn't get H1 yet.please send me suggestion

990


which type inter lock use in petrochemical refinery,and oil & gas?

2207


What is difference of fanuc alpha series 16i and 18i controller.also what is differnce betn TC and MC controller

1396






Speedtronic system .

1012


in mass flow meter what is drive friquancy ?

1188


how u calibrate pneumatic n motorized c/v?

1075


How INtools is useful for routine Instrument maintenance?

1118


how many maximum enter 2mm Dia solid cylindrical pipe into 8mm Dia hollow cylindrical pipe. give answer with calculation.

1126


What is the GK Value in Flowmeter?

2223


what are the diff. in servo and regulatory control?

2805


Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.

2278


Hi i m B.E. In elect. & comm. I m workin in bio mass plant from 6 mnths as inst. Engg. but now i m in dept. Of operation as shift engg...which is best operation or inst. 4 me? M confusd..plz help and reply me..

2572


What is the start up procedure of desalter

2433