Electrical Engineering (EE) Handwritten Lecture Notes (All Units) - Srikala Edition

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Electrical Engineering Handwritten Premium Lecture Notes, Prepared by Lecture Srikala. Specially for EEE and ECE Engineering Candidates. Syllabus Covered based on Anna University Third Semester.

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Syllabus :
ELECTRICAL ENGINEERING

UNIT-1 (pages: 50) - DC MACHINES
UNIT-2(pages: 28) - TRANSFORMER
UNIT-3(pages: 38) - INDUCTION MOTOR
UNIT-4 (pages: 24) - SYNCHRONOUS AND SPECIAL MACHINES
UNIT-5 (pages: 22) -TRANSMISSION AND DISTRIBUTION


Content :
UNIT-1

DC MACHINES
DC generator
Construction
Yoke
Choice of materials
Pole core and pole shoes
Choice of materials
Pole coils
Armature core
Armature windings
Commutator
Brushes and bearings
Pole pitch
EMF equation
Types of DC generator
1. Separately excited
2. Self excited
a. Series generator
b. Shunt generator
c. Compound generator
i. Long shunt compound generator
ii. Short shunt compound generator
Voltage regulation
Losses in Dc machine
Losses
1. Constant losses
a. Iron loss
b. Mechanical losses
c. Shunt field losses
2. Variable losses
a. Copper loss in armature windings
b. Copper loss in series field windings
Application of DC generator
DC motors
Fleming left hand rule
Back EMF
Significance of back EMF
Voltage equation of motor
Condition of maximum power
Torque and speed equation
DC motor characteristics
Protective device
Four point starter
Testing of Dc motor
Methods
1. Direct method
2. Indirect method
Speed control
Ward leonard system
Problems

UNIT-2

TRANSFORMER
Construction
Working principle
Types of transformer
Ideal transformer
Voltage transformer ratio
Equivalent resistance and reactance
All day efficiency
Load test on single phase transformer
Types – according to cooling
1. Oil filled self cooled
2. Oil filled water water cooled
3. Air blast type


UNIT-3

INDUCTION MOTOR
Classification
1. Based on principle of operation
2. Based on type of current
3. Based on speed
4. Based on structure
Squirrel cage rotor
Slip ring rotor
Principle of operation
Starting of IM
Starting of squirrel cage IM
Speed control
Changing number of stators poles
Frequency of rotor current
Single phase induction motor
Methods of starting

UNIT-4

SYNCHRONOUS AND SPECIAL MACHINES
Brushless alternators
Types
1. Peripheral
2. Transfer
3. Interior
4. Clawpole
Advantages
Disadvantages
Reluctance motor
Stepper motor
Types
1. Variable reluctance stepper motor
2. Permanent magnet stepper motor
3. Hybrid stepper motor

UNIT-5

TRANSMISSION AND DISTRIBUTION
Generation
Transmission
Distribution
1. Primary distribution
2. Secondary distribution
Two wire DC system
Three wire DC system
Based on connection
Ring main system
Insulator materials
1. Toughened glass
2. Porcelain
Types of insulators
1. Pin type insulators
2. Suspension type insulators
3. Shackle insulators
Underground cable
Construction of cables
Classification of cables

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