Many people often get confused with the terms Synchronous and Asynchronous motors and what exactly are their applications. That’s exactly why one of the newest members of the Electrical Engineering Community wrote this article. Check it below: The following information deals with the general working principles of Synchronous and Asynchronous motors, their advantages and where are they normally used and what can be achieved using each of these motors. Synchronous and Asynchronous Motors – Working Principles Synchronous Motors This is a typical AC electrical motor that is capable of producing ..read more

Star Delta Starter: Circuit Diagram, Working Principle & Theory What is Star Delta Starter A star delta starter is the most commonly used method for the starting of a 3 phase induction motor. In star delta starting an induction motor is connected in through a star connection throughout the starting period. Then once the motor reaches the required speed, the motor is connected in through a delta connection.  A star delta starter will start a motor with a star connected stator winding. When motor reaches about 80% of its full load speed, it will ..read more

Starting of an Induction Motor A three phase Induction Motor is Self Starting. When the supply is connected to the stator of a three-phase induction motor, a rotating magnetic field is produced, and the rotor starts rotating and the induction motor starts. At the time of starting, the motor slip is unity, and the starting current is very large. The purpose of a starter is not to just start the motor, but it performs the two main functions. They are as follows. To reduce the heavy starting current To provide overload and under voltage protection. The three phase induction motor may ..read more

Types of Induction Motor There are mainly two types of induction motor on the basis of power supply, Single Phase Induction Motor and Three Phase Induction Motor. As their name suggests, 1 phase AC power supply is extended to single phase induction motor while three phase induction motor is connected to 3 phase AC power supply. Types of Single Phase Induction Motor: Again, single phase induction motor may be classified on the basis of their construction and starting methods. On this basis, they can be further categorized into following types: Split Phase Induction Motor Capacitor Start Induc ..read more

Induction Motor: Working Principle, Types, & Definition What is an Induction Motor? An induction motor (also known as an asynchronous motor) is a commonly used AC electric motor. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. The rotor of an induction motor can be a squirrel cage rotor or wound type rotor. Induction motors are referred to as ‘asynchronous motors’ because they operate at a speed less than their synchronous speed. So first thing to unders ..read more

Difference Between Charge & Current The most significant difference between the charge and the current is that the charge is the physical property of matter, whereas the current is the rate of flow of charges. Some other differences between charge and current are explained below in the tabular form. The electric charge is the physical property of matter which experiences the force when placed in an electric filed. It is of three types positive, negative and neutral. When these charges (generally ele ..read more

Difference Between Voltage &  Current The voltage and current are the two major aspects of electricity.The voltage is the type of the electromagnetic force whose effect causes the flow of electrical current in the circuit. The magnitude of a voltage and current depends on each other, but these two terms are different from each other in some ways. One of the major differences between voltage and current is that the voltage is the difference between the two points and the current is the flow of electrical charges between these two points of an electric field. Some others differences b ..read more

Electric Current Definition: Electric current is defined as the rate of flow of negative charges of the conductor. In other words, the continuous flow of electrons in an electric circuit is called an electric current.The conducting material consists a large number of free electrons which move from one atom to the other at random. Unit of Current Since the charge is measured in coulombs and time in seconds, so the unit of electric current is coulomb/Sec (C/s) or amperes (A). The amperes is the SI unit of the conductor. The I is the symbolic representation of the current ..read more

Electronic Switches The electronic switches are generally called as solid state switches because there are no physical moving parts and hence absence of physical contacts. Most of the appliances are controlled by semiconductor switches such as motor drives and HVAC equipments. There are different types of solid state switches are available in today market with different sizes and ratings. Some of these solid state switches include transistors, SCRs, MOSFETs, TRIACs and IGBTs. Bipolar Transistors A transistor either allows the current to pass or it blocks the current as similar to working of no ..read more

What is an Electrical Switch? An electrical switch is any device used to interrupt the flow of electrons in a circuit. Switches are essentially binary devices: they are either completely on (“closed”) or completely off (“open”). There are many different types of switches, and we will explore some of these types in this chapter. Learn the Different Types of Switches Switches can be of mechanical or electronic type, Mechanical switches must be activated physically, by moving, pressing, releasing, or touching its contacts. Electronic switches do not require any physical contact in or ..read more