An 8 -pole alternator runs at 750 r. p. m and supplies power to a 6 -pole induction motor which has at full-load a slip of 3%. Find the full-load speed of the induction motor and the frequency of its rotor e. m. f. [ Tutorial: 34. 1/3] 3. In the case of an 8 pole induction motor, the supply frequency was 50 Hz and the shaft speed was 735 rpm.
An electrical motor is an electromechanical device that converts electrical energy into mechanical energy. In the case of three-phase AC (Alternating Current) operation, the most widely used motor is a 3 phase induction motor, as this type of motor does not require an additional starting device.These types of motors are known as self-starting induction motors.
This set of Design of Electrical Machines Multiple Choice Questions & Answers (MCQs) focuses on "Single Phase Induction Motor Construction". 1. How many steps are involved in the construction of single phase induction motor? a) 3 b) 4 c) 5 d) 6 View Answer
Lesson 12a: Three Phase Induction Motors ET 332b Ac Motors, Generators and Power Systems Lesson 12a_et332b.pptx 1 Learning Objectives Lesson 12a_et332b.pptx 2 After this presentation you will be able to: Explain how a three-phase induction motor operates Compute the synchronous speed of an induction motor and the slip between motor rotor and stator
Single Phase Induction Motor Definition: A single-phase induction motor is an electrical motor that converts single-phase electrical energy into mechanical energy using magnetic interactions. Construction : …
The working of the three-phase induction motor is based on the principle of electromagnetic induction. When three-phase stator winding of an induction motor is …
Working Principle of Shaded Pole Induction Motor : When a single-phase a.c. supply is given to the stator winding. The poles of the motor generate a magnetic field Φ m, but there is one more magnetic field Φ s produced by shading coils either in the same or opposite direction.. The combination of these fields makes a rotating magnetic field which makes the …
In this article is explains, Single phase induction motor basics. A single phase induction motor construction is simple, reliable, low cost to repair and maintain. The application using to a single motor found in the small grinder, centrifugal water …
Construction of Single-Phase Induction Motor. The construction of a single-phase induction motor is very simple, with two main components, a stator and a rotor. As the name suggests, the rotor is the rotating part, and the stator is the stationary part. Both the stator and rotor have windings of wire that produce a magnetic flux or field when ...
What is a 3-Phase Induction Motor? A three phase induction motor is a type of AC induction motors which operates on three phase supply as compared to the single phase …
A SIMPLE explanation of how a 3 phase induction motor works. We also discuss the CONSTRUCTION of a three phase motor – including its stator and rotor.
Slip ring induction motor is one of the types of 3-phase induction motor and is a wound rotor motor type. Because of various advantages like low initial current, high starting torque, and improved power factor, it is used in applications that require high torque, cranes, and elevators. ... knowing the slip ring induction motor construction is ...
3. INTRODUCTION Construction of a single phase induction motor is similar to the construction of three phase induction motor having squirrel cage rotor, except that the stator is wound for single phase supply. Stator is also provided with a 'starting winding' which is used only for starting purpose. This can be understood from the schematic of single phase …
Like any electric motor, a 3-phase induction motor has a stator and rotor. The stator carries a 3-phase winding (called stator winding) while the rotor carries a short circuited winding (called rotor winding). ... Why double-cage construction is used in Motors? In order to provide high starting torque at low starting current, double-cage ...
This article lists 75 Three Phase Induction Motor MCQs for engineering students.All the Three Phase Induction Motor Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of …
These 3 phase motor is supplied with 3 three-phase AC supply and is widely used in ships for heavier loads. 3 phase induction motors are of two types: squirrel cage and slip ring motors. Squirrel cage motors are widely used on ships due to their rugged construction and simple design, few e.g. of their applications are:
Single phase induction motor - Download as a PDF or view online for free ... • Single-phase motors may be classified as under, depending on their construction and method of starting: 1. Induction Motors (split-phase, capacitor and shaded-pole etc.) 2. Repulsion Motors (sometime called inductive-series motor) 3. AC Series Motor, and 4.
14. Rotor:- It is the rotating part of the induction motor. It is housed on the shaft of the induction motor. It has two ends, one is called Driving end and another is called non- Driving end. Mechanical load is connected on driving end while cooling fan is connected on non-driving end. Both the ends are connected with bearings for free rotation means of reduced …
In this research, we start from the construction of the induction motor and its main parts function. Then, the principle of operating of an induction machine is explained. Moreover, a...
Three-Phase Induction Motor – Construction, Operation & Types of 3-Phase Induction Motors. The motor is used to convert an electrical form of energy into mechanical form. According to the type of supply, motors are classified as …
A three-phase Induction motor mainly consists of two parts called the Stator and the Rotor. The stator is the stationary part of the induction motor, and the rotor is the rotating part. The construction of the stator is similar to the three …
To induce current in rotor there must be a speed difference between the rotor and the rotating magnetic field. This speed difference is called slip speed. 50 Starting torque is developed …
Figure 8.1 shows the construction of three phase induction motor. A 3 phase induction motor has two main parts (i) stator and (ii) rotor. The rotor is separated from the stator by a small air-gap which ranges from 0.4 mm to 4 …
2. Academic Example A two-pole, 50Hz, three–phase design B I.M (for thermal insulation) supplies 15kW a mechanical load at rotor speed of 2950 rpm. Do as required for the followings: 1. What is the percentage …
1. Single-Phase Induction Motor. A single phase induction motor is an electric powered motor that operates on unmarried-segment alternating modern-day (AC) strength. It is typically utilized in appliances, small commercial machines, and other packages where 3-section energy is not to be had. Single Phase Induction Motor. Construction
3 Phase Induction Motor Construction. A 3 Phase induction motor has two main parts - Stator; Rotor; By a small air gap ranging from 0.5 mm to 4 mm the rotor and stator are separated depending on the power rating of …
•Unlike three phase induction motors, single phase induction motors are not self starting. The reason behind this is very interesting. • Single phase induction motor has distributed stator winding and a squirrel-cage …
Reluctance Motor Construction Operation and Characteristics - There are very few single-phase motors which run at true synchronous speed and they do not require any external DC excitation for the rotor. Therefore, these motors are also called as unexcited single-phase synchronous motors.The efficiency and the torque developing capability of the single …
Three Phase induction motor uses three phase supply, for its operation. Starting torque: The starting torque is low. The starting torque is high. Maintenance : ... Single-phase motors are simple in construction, reliable, and economical as compared to three-phase induction motors.
Related Post: Three-Phase Induction Motor – Construction, Working, Types & Applications. Construction of Synchronous Motors. The construction of a synchronous motor is similar to an Alternator or Synchronous generator. it differs from an asynchronous or induction motor based on its rotor design. A Synchronous motor has two main parts.
The three-phase induction motors that employ squirrel-cage rotor are known as squirrel-cage induction motors. Almost 70% to 80% three-induction motors used in industrial applications are squirrel-cage induction motors because of their simple and robust construction which enable them to operate in most adverse circumstances.
In this topic, you study Linear Induction Motor – Construction, Diagram, Working Principle, Applications & Characteristics. Linear induction motor is a special type of induction motor designed to provide linear motion, based on the principle "whenever a relative motion occurs between field and short circuited conductors, currents are induced and result in …