uLektz Skills

Learning Path

Non-Linear: Random Order

About the Course

Course Description

This course provides students with concepts of Types and constructional details - principle of operation -operation on no load and on load, Operation On No Load And On Load, Phasor Diagrams Of Transformers, Regulation – Losses And Efficiency, Effect Of Variation Of Frequency And Supply Voltage On Losses – All Day Efficiency and parallel operation with equal voltage ratios

Objectives

1.Will familiarize about Off Load And On Load Tap Changers

2.Will demonstrate Production Of a Rotating Magnetic Field

3.Will develop knowledge in Circle diagram for predetermination of performance

Prerequisite

There is no particular prerequisite to Special Electrical Machines you will be able to do very well, if you have these basic skills:

1. Good Analytics Skills

2. Good Understanding Skills

3. Good Communication Skills

Course Study Materials

Module 1: SINGLE-PHASE TRANSFORMERS

1.1 Types and constructional details - principle of operation -operation on no load and on load
1.2 Operation On No Load And On Load
1.3 Phasor Diagrams Of Transformers
1.4 Regulation – Losses And Efficiency
1.5 Effect Of Variation Of Frequency And Supply Voltage On Losses – All Day Efficiency
SINGLE-PHASE TRANSFORMERS - ASSESSMENT 10 Questions

Module 2: SINGLE-PHASE TRANSFORMERS TESTING

2.1 Tests on single phase transformers- open circuit and short circuit tests – Sumpner’s test – separation of losses
2.2 parallel operation with equal voltage ratios
SINGLE-PHASE TRANSFORMERS TESTING - ASSESSMENT 10 Questions

Module 3: 3-PHASE TRANSFORMERS

3.1 Polyphase Connections - y/y, y/∆, ∆/y, ∆/∆ And Open ∆.
3.2 Third Harmonics In Phase Voltages
3.3 Off Load And On Load Tap Changers
3-PHASE TRANSFORMERS - ASSESSMENT 10 Questions

Module 4: 3-PHASE INDUCTION MOTORS

4.1 Construction Details Of Cage And Wound Rotor Machines
4.2 Production Of a Rotating Magnetic Field
4.3 Rotor Power Input, Rotor Copper Loss And Mechanical Power Developed And Their Inter Relationship
3-PHASE INDUCTION MOTORS - ASSESSMENT 10 Questions

Module 5: CHARACTERISTICS, STARTING AND TESTING METHODS OF INDUCTION MOTORS

5.1 Torque equation - expressions for maximum torque and starting torque
5.2 Circle diagram for predetermination of performance
5.3 Methods of starting – starting current and torque calculations
CHARACTERISTICS, STARTING AND TESTING METHODS OF INDUCTION MOTORS - ASSESSMENT 10 Questions

Module 6: DESIGN OF TRANSFORMER AND 3-PHASE INDUCTION MOTOR

6.1 Transformer: Design concept – output equation
6.2 Three phase induction motor: Design concept
6.3 Conductor Dimensions
6.4 Type of winding – number of rotor slots – conductor dimensions
DESIGN OF TRANSFORMER AND 3-PHASE INDUCTION MOTOR - ASSESSMENT 10 Questions

FINAL ASSESSMENT

FINAL ASSESSMENT 20 Questions

The certificate issued for the Course will have

Student's Name
Photograph
Course Title
Certificate Number
Date of Course Completion
Name(s) and Logo(s) of the Certifying Bodies

Only the e-certificate will be made available. No Hard copies. The certificates issued by The Academic Council of uLektz. can be e-verifiable at www.ulektzskills.com/verify.

Students will be assessed both at the end of each module and at the end of the Course.
Students scoring a minimum of 50% in the assessments are considered for Certifications