Dina Mourad,
Department of Electrical Engineering,
Electrical Technology, Faculty of Engineering,
Technology and Industrial Education, Prince Sattam Bin Abdulaziz University,
Helwan University, Al- Kharj, Saudi Arabia Cairo, Egypt.
Mohammed S. Abd-Albary,
Department of Electrical Technology, Faculty of Industrial Education Helwan University, Helwan, Egypt.
El Sayed F. El Tantawy,
Department of Electrical Engineering, Faculty of Engineering Banha University , Banha, Egypt.