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

Instrumentation Interview Questions

Questions Answers Views Company eMail

How to check the SCAN time of DCS ,n dont give therotical answers .How to check the SCAN time of DCS during FAT?

2 8063

Can anyone provide me the details of GAIL test paper?What is the format and what type of questions will be there? my id-princegnb@gmail.com

GAIL,

1 5687

where do you give the 4-20 ma i/p in a MIL control valve?

Siemens,

3 9402

What is the standard height for stancion supports? and what is the standard mounting height for different transmitters?

Samsung,

11 24759

how is hazardous and non hazardous area classified?

Bhel, Power Plant, Samsung,

2 8692

What are the characteristics of Control Valve

Ispat,

2 12239

what are the different types of terminal lugs used for wiring termination?

Yokogawa,

5 24654

What is the use of the shield wire and how is the connection at both the ends of a shield wire?

Samsung,

2 8870

What is minimum distance between three thermocouples (2oo3) mounted on same pipe line (20")? Technically accepted by stright line mounted or circler mounted?

1 5525

what is the difference between SCADA and DCS?

ACC,

5 16446

Why any transmitter signal is 4-20 mA only Why is started from lower range 4 mA and upper range is 20mA.

Edac,

5 12303

where can i find a flameproof hmi unit?

1 4165

what is dead weight tester and where it is used?.

DuPont, Jain steels,

11 21558

please send me gail format if u have... please help me if u can...

1 3792

HOW THE ORIFICE & PRV SIZING BE HAPPENED -- EXPLAIN IN BRIEF

3 7755

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Un-Answered Questions { Instrumentation }

why using negative supply for bentley nevada vibration system ?

2096

what is the difference between attemperator and desuperheater ?

5532

Why rdt and thermocouple both give different output .and one things more, how to generate ohm or mili volt plz mail me merajalam143545@yahoo.com

2763

Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection

1973

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

3421

Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

2087

HOW TO CHOOSE FREAQUENCY IN FMCW TYPE RADAR INSTRUMENTS. DESIGN BASIS OR DESIGN CALCULATONS ?

2136

Why boiler chimney area oxyden sensor fixing?

2434

what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.

2189

Linear amplifier.

1971

Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?

1742

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

2065

How d.p. Transmitter can be applied to close tank?

982

What is loop1 and loop2 in MTS LT?

3787

Explain Gas Turbine startup and shutdown sequences

4270

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