Answer Posted / faiyaz ahmad

solenoid valve is electro mechanically valve its work only two condition either NO/NC when it will be energize valve will be open and when it will be DE energize it will be close its consist of coil and plunger when it will energize plunger move toward and it will be flow
ecodrain valve is used to drain the waste water there are three types ecodrain 12/13/14/
its used in instrument air com pressure

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.

2260

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hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

2262

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Questions on flow meters,few questions on HART protocol,

2088

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i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......

2159

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this site is owned by an nonsense

2404

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any body who gone thru recent iocl interview.INSTRUMENTATION questions. I need.

2575

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can any send me a forbes marshall dtron 316 manual

2040

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Can any body help to get Rsemulator 5000 free from internet if possible then give me any link or any help .

2581

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Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com

2340

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I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

1837

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Question on maha cement

805

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plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}

2407

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sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.

2542

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please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com

1747

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please send data bank of quetions answers on analytical instrumentation.

1983

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