Answer / saqib

Silicon oil

Answer / p.nageswara rao

MERCURY FILLED

why we are using ungrounded RTD sensor and what is difference between grounded RTD and Ungrounded?

1 Answers  

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What is the main difference between Cavitation and Flashing?

1 Answers  

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What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?

0 Answers   Cairn, Honeywell,

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How does work A temperature valve or fv control valve in process plz brief me

0 Answers   Jindal,

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In RS 500 SLC 5/03 input change one module card to another card, plz. give steps clearly.

0 Answers   BHL,

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What is difference b/w absolute & gauge pressure? EXPLAIN

2 Answers   IFFCO,

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How to calibrate and check thermal mass flow meter of Make thermal instrument company inc model 60?

1 Answers   Wood Group,

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in the pipe line if the control valve fails to respond to controller action,by what means we can stop the flow in the pipe line ?

9 Answers  

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How can we test a bently nevda 3500/42M accelerometer monitor card by simulating it with test equipment?. what king od of signal (milli volts or volts or or resistance ) we should feed in the terminals of the card?

0 Answers  

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Where should we terminate the shield and why?

3 Answers   OPaL,

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as an instrumentation engineer which are the things we have to know / or we must have idea about that....

2 Answers  

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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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