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Process Control Technologies Interview Questions
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The company where I am working, their is rosemount 5400 series radar type level transmitter, it is meant to show level of filled tank, but along with the level it is showing temperature also, so my question is how a onon-contact type radar type level transmitter can show temperature even if it does not have any contact with the fluid?

1819

If a normal magnetic type flow transmitter that can measure flow, temperature and show this parameters on field, is it possible by any means to get this (flow and temperature) parameters info. On dcs? And if yes then with HART, FO communication or any other communication system?

1 1811

If a flow transmitter (magnetic type FT) that can measure flow and temperature, then why in some industries people use flow transmitter and temperature transmitter in the same line 1 after another? Even after 1 single flow FT is capable of measuring flow as well as temperature.

1 3938

I have installed a RTD whose length is 2250mm(RTD stem length), but it's upper 200 -250mm is out of the reactor, and this upper 200mm stem is surrounded by atmospheric temp. And the lower portion i.e. 2000mm is in contact with the measuring fluid, then does the final measuring temp. Gonna change as the upper 200mm RTD stem is out of reactor?

1 1986

How does a single acting, spring return ball valve actually work? Does it require continuous air supply? 

1638

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 3491

What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?

2594

Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

1690

Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions? 

1694

What is shielding effect?

1739

What is heating effect?

1852

Why is the length of cable layyed from RTD to temp. Transmitter should be minimum? Why does heating effect takes place in their?

1 5391

Why do we use triad cable for RTD to Temp.transmitter connection? Why we don't use 3 core cable?

1 13702

What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem? 

1996

Why do we have earthing cable in branch cable and shield in the same cable?

2125

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Process Control Technologies Interview Questions


Un-Answered Questions

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442


How to create the log file?

565


what is the command to see the error log?

5


Why do we need to use computers to help us sort lists?

552


How do you get the number of lines in an internal table? How to use a specific number occurs statement?

501






What is the difference between read work file 1 and read work file once? Why we are using work file once?

512


What is the difference between sendredirect() and forward() in a servlet?

501


What action plan is preferred if sql server is not responding?

510


Explain the difference between prokaryotes and eukaryotes?

454


How to answer for project questions..?

2207


1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks

2878


we are using centum vp as monitoring with Dell precision work station T3600 but some times PC(s) are restarted automatically . how we can solve this problem? thanks

1737


we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

1397


Define linear probing?

562


What is difference between stored function and application function?

579