Home Ebooks from PEguru Look inside Details Preview Buy ($1.99) Per Unit Systems: Ten Total Problems Solved With Detailed Explanation Per unit systems is an important concept in power system analysis. So much so, it shows up in all exams pertaining to power. Besides being taught in higher education, it is quite commonly used by engineers in the power industry. Equipment impedances are furnished in per unit. Source impedance for fault analysis is furnished in per unit. In this book, you will find enough problems solved for you to get the hang of this subject. Look inside Details Preview Buy ($2.99) Circuit Breaker Control Scheme Learn how to create trip and close scheme for a high voltage circuit breaker. Not just theory but practically implemented.