Basics Electrical

Introduction A universal motor is a special type of motor which is designed to run on either DC or singlephase AC supply. These motors are generally series wound (armature and field winding are in series), andhence produce high starting torque (See characteristics of DC motors here). That is why, universalmotors generally come built into the … Read more

Introduction Single phase power system is widely used as compared to three phase system for domesticpurpose, commercial purpose and to some extent in industrial purpose. As the single phase system ismore economical and the power requirement in most of the houses, shops, offices are small, this can beeasily met by single phase motor. The single … Read more

INTRODUCTION In the year 1821 British scientist Michael Faraday explained the conversion of electrical energyinto mechanical energy by placing a current carrying conductor in a magnetic field which resulted in therotation of the conductor due to torque produced by the mutual action of electrical current and magneticfield. Based on his principle the most primitive of … Read more

Fuse An electrical fuse is a simple device used to interrupt an electrical circuit during over currentcondition due to short circuit and/or overload. An electrical fuse operates on the principle of heatingeffect of electric current. During normal operating condition, the current flowing through the fusingelement is such that the rate of heat production in the … Read more

What is a Circuit Breaker? A circuit breaker essentially consists of fixed and moving contacts, called electrodes. Undernormal operating conditions, these contacts remain closed and will not open automatically until andUnless the system becomes faulty.The contacts can be opened manually or by remote control whenever desired. When a fault occurs on anypart of the system, … Read more

A Complete Introduction Three-phase transformers are passive machines that pass electrical energy between circuits. In the secondary circuit, a magnetic flux induces an electromotive force (emf), thus stepping up (increase) or stepping down (decrease) voltages without altering the frequency. Transformers are the unsung heroes of modern electrical power systems, silently stepping up or stepping down … Read more

Introduction to Single-Phase Transformers Introduction to Single-Phase Transformers Why Are Single-Phase Transformers Important? Construction of a Single-Phase Transformer Core Assembly Winding Configuration Insulation System Core Materials and Design Insulation System Working Principle of a Single-Phase Transformer Fundamental Operating Concept EMF equation for 1ø transformer: – Types of Single-Phase Transformers Core-Type Transformers Shell-Type Transformers Step-Up Transformers … Read more