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.
Video: How Stepper Motor Works?
How does a robotic arm in a production plant repeat exactly the same movements over and over again? How can you move an automatic milling machine so precisely? It is
Video – How Single Phase Induction Motor Works?
Read about working of induction motors here. All topics under single phase induction motor are listed here. Here is a video tutorial on how single phase induction motor works.
Types of Stepper Motor
A stepper motor is an electromechanical device which converts electrical pulses into discrete mechanical movements. The shaft or spindle of a stepper motor rotates in discrete step increments when
Three Phase Induction Motors – Construction
A three phase induction motor has two main parts stator rotor. The rotor is separated from the stator by a small air-gap which ranges from 0.4 mm to 4 mm,
Three Phase Induction Motor: Construction and Working Principle
The three-phase induction motors are the most widely used electric motors in the industry. They work on the principle of electromagnetic induction. Due to the similarity in the working principle of the transformer,
Split Phase Induction Motor – Operation and Characteristics
Before going to the operation and characteristics of split-phase induction motor we should first understand why single phase induction motor is not self-starting. To make a single-phase induction motor self-starting,
Split Phase and Capacitor Start Induction Motors
Before reading Split Phase and Capacitor Start Induction Motors, please read the previous article, Why a Single Phase Induction Motor is not Self Starting? Making a Single Phase Induction Motor
Slip Rings and Their Connection to Modern Engineering
Slip rings are small devices that have a very important role in all types of devices, equipment, and machinery that come in all sizes, from the smallest to the largest
Single Phase Induction Motor – Working Principle and Construction
Single-phase motors are the most familiar of all-electric motors because they are extensively used in home appliances, shops, offices etc. It is true that single-phase motors are a less efficient
Shaded Pole Induction Motors – Working and Construction
Shaded pole motor is a split-phase type single phase induction motor. The shaded pole motor is very popular for ratings below 0.05 HP (~ 40 W) because of its extremely
Production of Rotating Magnetic Field
The production of Rotating magnetic field in 3 phase supply is very interesting. When a 3-phase winding is energized from a 3-phase supply, a rotating magnetic field is produced. This
Objective Questions on Single Phase Motors | Part 4
46. The short coming of repulsion motor is (A) variation of speed with load (B) low power factor (C) tendency to spark at brushes (D) all of the above. Check
Objective Questions on Single Phase Motors | Part 3
31. The type of starting relay used on single phase hermetic motor is (A) hot wire relay (B) timing relay (C) current coil relay (D) voltage coil relay (E) any
Insulation Resistance Test (IR Test) or Megger Test
Insulation Resistance or IR Test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system of electrical equipment. It reflects the presence or absence of
How Star Delta Starter Works?
Star-Delta starting is frequently referred to as “Soft-starting” a motor. But what is soft about his starting method? Why is it used? What are the advantages? What are the disadvantages? In
Electrical and Mechanical Noise in Motors
Two types of noises occur in an electric motor, one is electrical noise and the other is mechanical noise. The causes of remedial treatments for both are discussed in this
Electric Motor Maintenance : Preventive, Predictive and Reactive Maintenance
Electric Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Generally, motors and motor parts should be maintained and tested at least every 6 months. Then
Construction of Universal Motors
A universal motor is one of the single-phase motors that can be operated on either direct current or single-phase alternating current at approximately the same speed. This motor is most
Comparison between Induction Motor and Transformer
An induction motor may be considered to be a transformer with a rotating short-circuited secondary. The stator winding corresponds to the transformer primary and the rotor winding to the transformer
Capacitor Start Single Phase Induction Motor – Working and Characteristics
The capacitor start single phase induction motor is a type of split-phase induction motor. Capacitors are used to improve the starting and running performance of the single-phase inductions motors. The
Armature Reaction in DC Motors
Armature reaction also occurs in a DC motor just like armature reaction in DC Generator. This is expected because when current flows through the armature conductors of a DC motor,
AC Single Phase Motors
Single phase motors are the most familiar of all electric motors because they are extensively used in home appliances, shops, offices etc. It is true that single phase motors are
