Automation System
Relay ladder logic is used in a PC because:

All of these
it is impossible to write a control program for a machine in any other logic
None of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
it is the best industrial control language ever developed.

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Trend analysis:

requires a very expensive system to implement
is a brand new concept
is used only in financial planning
can improve control system response
None of these

ANSWER DOWNLOAD EXAMIANS APP