Zev and John Were Neighbours

question 78

True/False

Zev and John were neighbours.Before Zev left on a holiday,he asked John to "keep an eye on his house." While Zev was on holidays,John noticed that Zev's lawn was in need of cutting,and proceeded to cut the lawn.On Zev's return from his holiday,John demanded $10 for cutting the lawn.
-John would not be entitled to claim anything for his service because his act was gratuitous.

Analyze and interpret PLC wiring diagrams and schematics.

Understand the importance and methods of programming PLCs.

Identify the significance of input and output devices in a PLC system.

Appreciate the advantages of using PLCs over traditional control systems.