Is there a way to compare two structure variables?

608

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What is the purpose of aggregates?

86

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What does type safe mean in c#?

491

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Which star does not change its position in the sky?

95

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Tell me should I use print “$a dollars” or “{$a} dollars” command to print out the value of dollars in this case?

90

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what values & beliefs have guided you in your career path

2764

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How to drop the table using module?

89

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what is the maximum number of files allowed in rpg?

924

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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.

1678

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Why is java so popular?

621

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State the advantages of using infix notations?

665

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How do I convert columns to rows in word?

346

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What is difference between singleton and prototype bean?

175

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What is the Purpose of 'extern' keyword in a function declaration?

637

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What does jms stand for?

447

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