Mother Trade Automation, as a constituent institution, received approval in 2012 from the Bangladesh Technical Education Board under the name "Mother Trade Training Center", with institution code 53136. This institution offers short courses as designated by the Bangladesh Technical Education Board and provides government-certified certificates upon completion.

Through Mother Trade Automation, all types of governmental and private electrical work are conducted continuously. To manage field-level work proficiently, we maintain a modern-standard lab in Gazipur, complete with a three-phase power line. Here, training for all personnel is conducted using a dedicated book titled "Electrical Maintenance and Viva Guide", alongside our proprietary training course modules.

Our training courses are categorized separately for engineers and non-engineers. A distinct syllabus has been developed for engineers, covering the necessary theory and practical skills for maintenance, troubleshooting, and entrepreneurship.

Students with backgrounds in BSc in EEE, Diploma in Electrical, Electronics, Electromedical, Instrumentation & Process Control, Mechanical, Mechatronics, and Computer Technology can enhance their skills through industrial attachments or professional training here.

Furthermore, engineers and technicians currently working in factories, who wish to increase their proficiency, can visit our lab. By completing professional courses, they can establish themselves as skilled professionals within their companies, contributing to reputation, salary increment, and promotion.

This book has been compiled based on real-world practical knowledge, integrating theory and viva questions across various sectors. It is written in both Bengali and English, ensuring broader accessibility. We welcome feedback and suggestions for improvement.