Answer / rajkumar.diice

Written test be usual
questions will be pressure
conversions, temperature
sensors, massflow nevering
technique, control valve over
hauling etc. In interview They
ask questions about P&I
diagrams and their symbol
expansions. You should know
to develop a diagram. More
often they question about
differential pressure
measurements in orifice
plates. And about
thermocouples! Pipeline
standards! DCS architecture

How many loops are there in the power plant? how many closed & open loop in the power plant ? Please give me the exact clarification?

2 Answers   Lanco, Reliance,

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A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

0 Answers   MNC,

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In a ball valve which require 24v dc supply to operate, whose solenoid valve doesn't have any + or - indication, how can we make wiring connectionto solenoid valve?

1 Answers   Process Control Technologies,

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What is the working principle of oxygen analyzers(zirconium oxide type) used in CFBC boilers?

3 Answers   Bajaj, Kohinoor, Wartsila,

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Ple give me "INDUSTRIAL INSTRUMENTATION AND CONTROL S.k. Singh 3th edition" Solution manual to self-Check Quiz and chapter-wise PowerPoint Slides. Home web-site not available... Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Thanks for all...

0 Answers  

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hi everybody. right now i am working with thermal power plant. our company plant is tripped because of program corrupt. i would like to know is it possible when the plant is running. we are using FREELANCE ABB800F CONTROLLER.

2 Answers  

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Exapain Deatails of the PID controlller

4 Answers  

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

2 Answers   Samsung,

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What is defferent betwen ESP &PCP PUMP .HOW IT IS WORK?

0 Answers   Jindal,

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Why do we use 24V DC supply in instrumentation? What are its merits and demerits??

1 Answers   JSW, MJPRU,

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purpose of absolute ppressure transmitter applcation?

1 Answers  

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SIR MAY I KNOW IF RADAR TYPE LEVEL TRANSMITTER SHOWING IN THE FIELD 0 % LEVEL AND IN DCS SHOWING 100% THEN WHAT IS THE CAUSE I CLEAN THE CHAMBER & TAKEN ONLINE BUT ONLY ONCE ITS BECOME ZERO IN DCS BUT AGAIN 100% SHOWING IN DCS,THEN I REMOVE THE POWER SUPLLY AND CONNECT IT AGAIN .IS IT OK BUT STILL IN THE DCS ITS 100% AND ON THE DISPLAY ITS INITILAZIATION PLEASE HELP ME READRING THIS?

4 Answers  

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