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Why would an Engineer consider combining FEEDBACK and
FEEDFORWARD control in some applications?
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Answer Posted / gonzales
In boiler when tripple element controlling required
| Is This Answer Correct ? | 4 Yes | 2 No |
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Decibel.
How an rtd work, and what volts/current goes to a rtd to measure the resistance?
Explain PID controller tuning & any one method used for it.
Specific gravity.
I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.
Explain plc level and its type?
how many type of plug are used in pneumatic control valve,name them.
How to work togather like sov,limit switch,proxy switch and booster in xv
What is zener diode? What is voltage regulator?
What is the PLC configuration in Cement industry?
how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.
Which type of pressure can be measured by these elements?
1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling
how can be calibrate flow indication transmitter (rosemount) it shows excess milli amps nearly about 24 ma on full scale, but its scale was set on 20ma on full scale..???how can be simiulate..???
Give Detail information about plc,dcs,and scada system?
