In this book, you will find a collection of short questions and answers that cover the basics of electrical circuits, electronic devices, digital electronics, and Instrumentation. Each chapter has been carefully crafted to provide an easy-to-understand introduction to the topic, with examples and diagrams to aid your understanding.This book is ideal for students studying electrical and electronics engineering, as well as professionals in the field who want to refresh their knowledge of the basics. It can also be used as a quick reference guide for those working on electrical and electronics projects.We hope that this book will be a valuable resource for you, and we wish you all the best in your studies and career.