Why do we need hibernate in java?

140

Which command is used to find what is in your home directory?

549

How to load specific no.of records using bteq, or fastload,or multiload

1309

What are signals in Django ?

232

What is the meaning of c in c language?

587

What is scope of a variable?

596

What are the advantages of using formula in excel sheet?

310

Why generics are used in java?

542

What is the difference between systemd and upstart?

397

What are function of ms excel?

376

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.

1682

How many databases can we create on a single server?

282

What is frame shift mutation?

632

What is the use of account id in logon tab?

1650

What is difference between c sharp and c#?

458