Abstract
AbstractLehman observed that star—delta and delta—star transformation cannot always be applied to networks with perfect (unfailing) vertices so as to exactly preserve reliability, and Rosenthal and Frisque introduced imperfect vertices to make exact delta—star transformations possible. We give an explicit condition that is satisfied if and only if a network with perfect vertices can be subjected to an exact star—delta or delta—star transformation, and we discuss the introduction of imperfect faces to make exact star—delta transformations possible. © 1993 by John Wiley & Sons, Inc.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
