AC & DC Machines
All the AC and DC motors and generators are included in the AC and DC machines. This page covers major articles of Transformer, DC Generators, DC Motors, Alternators, Synchronous Machines, Special Electrical Machines including Stepper motor, BLDC motor, Servo motor, Reluctance motor etc.
Electro - mechanical Energy Conversation
Different methods of study of electrical machines
Singly excited system & doubly excited system
DC Generator
Characteristics of DC Shunt, DC Series and DC Compound Generator
Armature reaction in the DC Generator
What is reactance voltage in the DC Generator?
How to built up voltage in the DC Generator?
DC Motor
Torque and output power equation in the DC Motor
Speed control of DC Series Motor
Speed control of DC Shunt Motor
Function of Starter in the DC Motor
Characteristics of DC shunt motor, DC series motor and DC compound Motor
To perform Swinburne Test on DC Shunt motor
Transformer efficiency and condition for maximum efficiency
Parallel operation of transformer
Working of auto transformer & saving of copper material
Voltage regulation of transformer
Per unit resistance & per unit reactance
Neutral shift in the transformer
Compare – Distribution transformer & Power transformer
Zig zag transformer – construction and advantages
Classification of Dry type transformer
Advantages of stepped core over square core in the transformer
Transformer name plate as per Indian Standard
Standard kVA rating of three phase transformer
Transformer testing : Type test & Routine Test
Technical specification of three phase transformer
Compare – three phase transformer and Induction motor
To perform open circuit test on transformer
To perform short circuit test on transformer
Three Phase Induction Motor
Rotating magnetic field produced by two phase winding
Define : Synchronous speed, slip spped, speed , rotor speed
Starting torque and condition for maximum starting torque
Full load torque and condition for maximum full load torque
Compare : Squirrel cage and Slip ring induction motor
Torque – Slip characteristic of three phase induction motor
Control circuit of Direct on Line starter
Control circuit of automatic star delta starter
Control circuit of semi automatic star delta starter
Control circuit of forward reverse starter
Compare starting torque and full load torque in the starter
Single phase induction motor
Split phase motor : construction and working
Construction of capacitor start and induction run motor
Construction and working of capacitor start and capacitor run motor
Compare : Split phase induction motor and capacitor start induction run motor
Synchronous Motor
Alternator
Compare : Cylindrical rotor and Salient pole alternator
Special Electrical Machines
Tertiary winding : construction and working
Earthing transformer : construction and working
Hysteresis motor : construction and working
Reluctance motor : construction and working
Constant voltage transformer : construction and working
Constant current transformer : construction and working
Linear Induction Motor : construction and working
How to separate eddy current loss and hysteresis loss in the DC Machines?
How to separate eddy current loss and hysteresis loss in the Transformer?
To perform Hopkinson test on DC Shunt Motor
To perform field test on DC Series Motor
Design of DC series motor starter
Design of DC shunt motor starter
Compare : BLDC Motor & Conventional DC Motor
Stepper Motor terminology : Holding torque, Step angle, resolution
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