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how pressure reduce through pressure control valve? suppose we have to reduce 20 kg pressure to 10 kg pressure , then what we do ? open the valve or close the valve , initially it is 20 % is upon ( for ur knowledge ).
TATA,
4 8194what is the analog input , analog output , digital output, digital input geven to the MSSV , CBD, IBD , START UP VENT , BOILER FEED PUMP , AOP, CEP , ETC
1 3291pressure switch range 0 to 2bar.i have to install from ground level to 5 meters height.what is the formula the to increse the range ? and every 1 meter how much pressure should be add ?
3 6336My friend has faced this question! I don't know clearly. So please anyone give me the correct and short answer to this question? What is variable frequency drive? Types, what is star to delta? Why this arrangement necessary?
5 10234Qatar fertilizer call me for interview as Instrumentation Project Engineer. Please let me know what kind of question they asked ? ALso they said they will take Written test, any idea about this written test ?
1 9459Post New Instrumentation Questions
How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?
How to do gas analysers calibration in AUTO and Manually by using zero and span gas?
how to check earthing,what is minum ohms for proper earthing
how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?
How can i copy program (parameter) from mm440 (V.F.D.) by using BOP?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
How many ohms are required for proper earthing?
Gas equation
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
what is the electrical operation procedure for switching on 27.6MVA electric furnace.
Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?
what would be the minimum flow rate that we can measure on rotameter..?
Can any body help to get Rsemulator 5000 free from internet if possible then give me any link or any help .
How to calibrate smoke Dectector
send me last 5 years questions asked in rrb chennai, for section engineer
