Cogging in Induction Motor
Cogging is when a motor has trouble starting because the rotor gets stuck due to magnetic forces between the rotor and stator teeth.
Electrical Machine
EMF Equation of DC Generator with Easy Explanation
Learn the EMF Equation of DC Generator in simple language. Understand how EMF is generated, step-by-step formula derivation, and easy examples for students.
Open circuit characteristics of DC Generator
Open Circuit Characteristics (O.C.C) refer to the relationship between the generated voltage (EMF) and the field current in a generator
Losses in Transformer
The power losses in a transformer are of two types: (i) Core or Iron Losses (Pi): Iron or core losses consist of: Pi $$ P_i = \text{Hysteresis loss} + \text{Eddy current loss}\quad = \text{Constant losses} $$ These can be determine by open circuit test . Hysteresis Loss: where: Eaddy Current Loss: $$ Khf ^{2}\mathrm{B}_{m}^{2}t^{2}watt/m^{3} = … Read more
Single Phase Transformer Formulas
Parameter Symbol / Formula Where Primary EMF Equation of Single Phase Transformer (Ep) f= frequency Np =Number of primary turns = maximum flux Secondary EMF Equation (Es) f= frequency Ns =Number of secondary turns = maximum flux Transformation ratio (K) Ns =Number of secondary turns Np =Number of primary turnsVp =Primary voltageVs =Secondary voltage Turn … Read more
DC Generator Formulas and Equations
Here, we have listed all the important DC Generator Formulas and Equations, DC generator EMF equation, power equation etc.
Crawling in Three-Phase Induction Motors
Crawling is a phenomenon where a three phase induction motor runs at a speed significantly lower than its synchronous speed
Types of Three Phase Induction Motor
The main types of Three phase induction motor are Squirrel cage induction motor and Wound rotor or Slip ring induction motor