what is basic working principle of Governer in power plant?
Answer Posted / vaibhav v t
Auto regulation of steam pressure/flow with respect to
speed of the turbine.
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What are different type of instrument cable
please send the sample qustion paper for iocl written test ..
How to change dcs card in online. (Dsc is maxdna)
What is Predictive Maintenance
hey any one got the papers of SAIL and HPCL plz do help me by posting them to my mail ID's naren07_87@yaho.co.in, surenarendra@gmail.com
Explain the working of an electronic level troll.
How to decrease opening & closing time of on/off valve?
Why do we floating DC in DC system.
Programmable Logic control.
Question on maha cement
i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure
what is the electrical operation procedure for switching on 27.6MVA electric furnace.
Do you have reference list?
Explain an adaptive / self-tuning controller’s major draw card.
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.