Relay ladder logic is used in a PC because:
A. it is impossible to write a control program for a machine in any other logic
B. it is the best industrial control language ever developed.
C. most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
D. All of the above
E. None of the above
Answer: Option C
This Question Belongs to Computer Science >> Automation System
A. defines the form of the instruction
B. is always machine dependent
C. is never machine dependent
D. All of the above
E. None of the above
Which of the following symbol modes are used to input of graphics to General CAD system?
A. Live and Rectangle mode
B. Arc and Circle mode
C. Dimension and Alphanumeric mode
D. All of the above
E. None of the above
A. Solid modeling
B. Wire-frame modeling
C. Surface modeling
D. FEM (Finite Element Modeling)
E. None of the above
A. should be built in a modular fashion wherever possible
B. are very difficult to change
C. are very flexible
D. (a) and (c) above
E. None of the above
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