An induction is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.
Three Point Starter: Diagram and Working PrincipleDr.Raja R
Three Point Starter: Diagram and Working Principle, Construction of 3 Point Starter, Working of Three Point Starter, Working of No Voltage Coil of 3 Point Starter, Drawbacks of a Three Point Starter
Obstacle Avoiding robot is a self thinking robot which can take decisions itself using programmed brain without any guidance from human beings. In our Project we use Infrared to sense obstacles and take movements accordingly. Our Project
mainly used in military application, small toys and also used in mines by increasing IR sensors.
An induction is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.
Three Point Starter: Diagram and Working PrincipleDr.Raja R
Three Point Starter: Diagram and Working Principle, Construction of 3 Point Starter, Working of Three Point Starter, Working of No Voltage Coil of 3 Point Starter, Drawbacks of a Three Point Starter
Obstacle Avoiding robot is a self thinking robot which can take decisions itself using programmed brain without any guidance from human beings. In our Project we use Infrared to sense obstacles and take movements accordingly. Our Project
mainly used in military application, small toys and also used in mines by increasing IR sensors.
Application of Capacitors to Distribution System and Voltage RegulationAmeen San
Application of Capacitors to
Distribution System and Voltage
Regulation
POWER FACTOR IMPROVEMENT,
System Harmonics
Voltage Regulation
Methods of Voltage Control
CONSTRUCTION OF DC MACHINE, INDUCTION MACHINE & SYNCHRONOUS MACHINE|DAY 11|BA...Prasant Kumar
#CONSTRUCTION OF DC MACHINE
#DC MACHINE CONSTRUCTION IN HINDI
#INDUCTION MACHINE CONSTRUCTION IN HINDI
#SYNCHRONOUS MACHINE CONSTRUCTION IN HINDI
#CONSTRUCTION OF INDUCTION MACHINE
#CONSTRUCTION OF SYNCHRONOUS MACHINE
#CONSTRUCTION OF DC MOTOR
#CONSTRUCTION OF DC GENERATOR
#CONSTRUCTION OF INDUCTION MOTOR
#BASIC ELECTRICAL ENGINEERING
Electrical machine Day 11, Construction of DC, Induction motor, Synchronous generator, Synchronous motor, alternator, Basic Electrical Engineering
Syllabus
Introduction of Machine
Classification of Machine
Construction of DC, Induction & Synchronous machine
Working Principle
EMF Equation of all machine
A transformer works on alternating current, while a DC machine works on Direct Current
It has two main parts :
Stator – It is the stationary part. It does not move or rotate.
Rotor – It is the rotating part of the machine.
Electrical machine Day 11,Construction of DC, Induction motor, Synchronous generator, Synchronous motor,alternator,Basic Electrical Engineering
Syllabus
Introduction of Machine
Classification of Machine
Construction of DC, Induction & Synchronous machine
Working Principle
EMF Equation of all machine
A transformer works on alternating current, while a DC machine works on Direct Current
It has two main parts :
Stator – It is the stationary part. It does not move or rotate.
Rotor – It is the rotating part of the machine.
YOKE
It is the outermost part of a DC motor. It is made of cast iron or cast steel.
It provides mechanical protection to the inner parts of the machine.
Provide low reluctance path for the magnetic flux.
Pole core
These are made of cast steel laminations.
The main purpose is to hold the field windings .
The end portion of the pole is called pole shoe.
FIELD WINDING
They are enameled copper wires wound around the poles
When current passes through series connected windings then adjacent poles attain opposite polarity
Armature core
This is the rotating part of the machine
It is a cylindrical structure with slots around its outer periphery.
It houses conductors in the slots.
It provides easy path for magnetic flux
Types of fluid conductors in hydraulic circuits and their advantages and disadvantages. Selection criteria for the fluid conductors and the procedure to determine their size.
Applications of turbines-Hydroelectric Power PlantsAnand Prithviraj
Different types of turbines used in hydroelectric power plants based on the working parameters such as head, flow, etc., Characteristics of a turbine; specific to its applications in a dam.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Online aptitude test management system project report.pdfKamal Acharya
The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
Every time when lecturers/professors need to conduct examinations they have to sit down think about the questions and then create a whole new set of questions for each and every exam. In some cases the professor may want to give an open book online exam that is the student can take the exam any time anywhere, but the student might have to answer the questions in a limited time period. The professor may want to change the sequence of questions for every student. The problem that a student has is whenever a date for the exam is declared the student has to take it and there is no way he can take it at some other time. This project will create an interface for the examiner to create and store questions in a repository. It will also create an interface for the student to take examinations at his convenience and the questions and/or exams may be timed. Thereby creating an application which can be used by examiners and examinee’s simultaneously.
Examination System is very useful for Teachers/Professors. As in the teaching profession, you are responsible for writing question papers. In the conventional method, you write the question paper on paper, keep question papers separate from answers and all this information you have to keep in a locker to avoid unauthorized access. Using the Examination System you can create a question paper and everything will be written to a single exam file in encrypted format. You can set the General and Administrator password to avoid unauthorized access to your question paper. Every time you start the examination, the program shuffles all the questions and selects them randomly from the database, which reduces the chances of memorizing the questions.
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HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
2. • Stator and rotor are the most essential parts
of an induction motor.
• The stator is the stationary part of a rotary
system which provides the necessary
magnetic field required to rotate the rotor.
• The rotor is the non-stationary part of a
rotary electric motor, which rotates because
the wires and magnetic field of the motor are
arranged so that a torque is developed about
the rotor's axis.
3. Stator
>A stator consists of two
parts.
(i)Stator core (ii)Windings
>The stator core comprises of
compressed stampings.
>The stampings are either
made of silicon steel or mild
steel.
4. • The stampings are compressed
using an hydraulic press and
are kept intact by using a metal
strip.
• The stampings are designed in
such a way that slots are left
for winding.
• The stator windings are made
of copper wires(insulated
incase of open well type).
5. • The number of windings
vary depending upon the
power of motor.
• Bamboo sticks are placed
in between the slots to
prevent the dislocation of
the windings from their
slot.
• Also insulating sheets are
kept in the slots to prevent
current conduction
between the windings.
6. Rotor
>The rotor consists of
two main parts,
(i)Rotor core (ii)Shaft
>The core is made of
stampings which are
compressed initially
after which they are
die casted.
7. • The stampings of the rotor are
different from that of the stator.
• Slits are cut on the surface of
the compressed stampings
which are later filled by die
casting the component.
• Those slits filled by the molten
metal(usually aluminium) are
called skew lines.
• Skew lines are generally made
to prevent magnetic lock.
8. • The ends of the shaft are
supported by deep groove ball
bearings to give support and to
reduce friction while rotation.
• As a considerable amount of
heat is generated during the
rotor’s rotation, a cooling fan is
attached to the shaft to reduce
the effect of heat
consequently(not required
incase of open well).
10. • The stator and rotor should never be in
contact. An air gap of at least 2-3 mm must be
provided, which is achieved by fixing the rotor
on both sides with the help of bearings.
• The rotor must be perfectly balanced or it may
cause vibrations leading to the damage of the
stator and ultimately the motor. So the rotor is
checked for any imbalance and is balanced by
addition of extra metal by welding.