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Shell Instrumentation Interview Questions

Questions Answers Views Company eMail

deference between DCS and PLC including date processing and architacture.

11 20042

the 3 most common transmitter protocol being in refinery or qatar gas and aramco.

2947

If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , then it will reaches again 50%, this type of action occured frequntly.. so what to do for solve this problem. The possible cause is in volume booster or positioner's relay.. positioner is double acting .. and make siemens..sipart.The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

2 12961

Coriolis flow meter coil supply is 24vdc but why still we given 230ac for this transmitter let me explained detailed review please

1 4744

Why we are using temperature and pressure as a reference when measuring flow of steam?

4 9266

what is commissioning & pre commissioning , explain with difination

2 5812

why we are giving negative supply for vibration sensors?

3 11507

What is capacity of impulse line tube ...answer in psi

2 11430

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Shell Instrumentation Interview Questions

Shell Instrumentation Interview Questions (8)

Un-Answered Questions

What does rack awareness algorithm means?

487

What does 7/9*9 equal ? a) 1 b) 0.08642 c) 0

959

How to install django ?

486

What do the 9i dbms_standard.sql_txt() and dbms_standard.sql_text() procedures do?

4519

if my flow is 20000 m3/h than which range of DPT i have to use????

1835

What is the Purpose of the MQTT protocol?

Tell me what is coc in rails?

983

Why html is markup language?

817

how to do finalisation account ,pls tell me step by step ?

2547

Is there an API for VSS? Where can I get it?

1259

how to create our resume?

2177

What is the purpose of using a model?

972

How to find weight of steel in kg if we know the area which is in m2? Following details are known to us, Area=125m² thk of slab=250mm Steel details:T12@200 PS:considering mesh top and bottom with X and Y direction

3094

How to do upload of large sized video file to server ? while uploading user presses “Homebutton” How long will execute?

1368

What is transaction per second graph(pass)?

1280