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if my 6 kva UPS gives 20 min. backup at 100 % load, then at
25% load what is the backup time?
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Hi Friends , i need one urgent help , i am preparing for M.tech entrance examination , i need some obejective questions related to instrumentation field. where can i get those ? can anyone help me pls ?
Tell about your IFFCO plant visit.
Difference between 2-Valve Manifolds, 3-Valve Manifolds and 5-Valve Manifolds 3 with diagram
Why we are using reverse action in displacer types level transmitters on some Vessels?
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.
i am from instrument branch i want paper patern of mahagenco . any pevious years paper regarding my branch send me please . please.....
What do you know about gail?
Specify for Cables - Flame Retardant and Fire Resistant?
hii my name is sujith...i am preparing for HPVL GET 2010... so ,,,pls help me by send any previous questions or material to my site.....(Msujith_12@in.com) thank q
please someone tell me what is function of vibration sencer and how many types and how to control viberation.please. my id is jimmykhan077@gmail.com
Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?
what is the minimum power (P=VI)to produce a spark?
sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com
What is three element drum level control system why its better than single element?
What is the formula of vabration sesore. i mean how to covert mils to volt plz share if any body knows very argent : my mai is merajalam143545@yahoo.com
