What are some of the advantages of using electrical power in an automated system?

What is the difference between a closed-loop control system and an open-loop control system?

What is the difference between fixed automation and programmable automation?

What is a sensor?

What is an actuator in an automated system?

What is a contact input interface?

What is a programmable logic controller?

Identify and briefly describe the three basic components of a numerical control system.

What are some of the benefits usually cited for NC compared to using manual alternative methods?

A leadscrew with a 7.5 mm pitch drives a worktable in an NC positioning system. The leadscrew is powered by a stepping motor which has 200 step angles. The worktable is programmed to move a distance of 120 mm from its present position at a travel speed of 300 mm/min. Determine (a) the number of pulses required to move the table the specified distance and (b) the required motor speed and pulse rate to achieve the desired table speed.