11. Minimum phase systems provide some insight on zero dynamics. 12. :A three phase system is likely a servo motor not a stepper motor. 13. However, this led to problems in the phasing systems that were never wholly cured. 14. Water in a closed jar with an air space over it forms a two phase system . 15. Higher order phase systems require more than three wires, but deliver little or no benefit. 16. For all causal and magnitude response, the minimum phase system has the minimum group delay. 17. There are 17 intersections prone to traffic congestion with the obsolete Multi Program Eight Phase System . 18. It is a two phase system . 19. Three-phase systems , however, are generally only seen in industrial and commercial settings. 20. Emulsions are part of a more general class of two-phase systems of matter called colloids.