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.

2244

send me few previous years section engineer question papers?..

2099

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..

1830

any body hv a experience of L&T pget interview for mechanical thn send me question and experience to me as i hv interview on 8 th may so send me as soon as posssible on my mail id nilesh.spy2000@gmail.com

4695

pls send my id for supervisor model paper qustion

2188

can u send me ttq upto 2008 on my email id pooja_bora18@yahoo.com.sorry for the trouble.

2009

how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)

2053

i want to ecil (Electronics Corporation of India Limited Hyderabad) previous civil engineering question papers immediately please.............

3219

i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

2084

plz send me paper of mppgcl 2008 or experience posted by any candidate

3840

Iam preparing for Visakhapatnam Management Trainee 2009 entrance exam.. If anybody have Visakhapatnam Management Trainee Interview questions Pls forward to my mail id srikanth.avanthi@gmail.com .. It is kindly request..

2417

plz.show development and anchorage length in simple diagram.

2635

What types of high speed CMOS circuits have you designed?

2205

CBCT selection

2348

PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.

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