Indicate whether the statement is True or False.

1) Any control system goes through five stages, design,construction, installation, commissioning, &
maintenance. A PLC system brings advantages just at threestages.
2) PLC implement functions such as logic, sequencing, timing,counting, and arithmetic in order to
control machines and processes.
3) A programmable logic controller (PLC) is designed to be operatedby engineers with a higher
knowledge of computers and computing languages.

4) The term logic in programmable logic controller (PLC) is usedbecause programming is primarily
concerned with implementing logic and switching operations.
5) When compared with relay systems, PLCs are more compact thanrelay systems.
6) When compared with relay systems, PLCs require more maintenancethan relay systems.
7) When compared with relay systems, PLCs Can be readily expandedby adding new modules to the
PLC whereas software changes are necessary with relaysystems.
8) PLCs are similar to computers, but whereas computers areoptimized for calculation and
display tasks, PLCs are optimized for control tasks and theindustrial environment.
9) The terms sourcing and sinking are used to describe the way inwhich AC devices are
connected to a PLC.
10) If the current flows from the output module to an output load,the output module is referred to as
sourcing.