The book contains thousands of solved multiple-choice questions (MCQs) and question papers from State Electricity Board Exams for the Supervisor License (Supervisor Certificate of Competency). The book covers the following topics: Principles of Electricity and Materials, Electromagnetism, DC Machines, Batteries, AC Circuits, AC Machines, Transformers, Power Transmission and Distribution, Illumination, Power Generation, Testing and Measurement, Safety Measures, Rules and Codes (Electricity Acts 2003, 2010 and 2023 and IS codes 10028, 10118, 1646, 1866, 3043, 5571, 5572, 732 and 900), Domestic and Industrial Installation, Question Papers: MP ESL 2025-1, MP ESL 2025-2, MP ESL 2025-3, and a Downloads page. The book is written strictly according to the syllabus prescribed by the state electricity boards for supervisor license exams.