Why Induction Motor Has Poor Power Factor at No Load
Induction motors have a low power factor at no load because they draw a large magnetizing current to create the magnetic field, while the actual
Machines
An electrical machine converts mechanical energy into electrical energy or vice versa. The transformer is also an electrical machine which transform the voltage without changing the frequency. We will discuss about the;
- DC Motor
- DC generator
- Induction Motor
- Transformer
- Electrical drives
- Alternator or synchronous generator
Deep Bar Double Cage Induction Motor: Construction, Working & Speed-Torque Analysis
💡 Key learnings: Deep Bar Double Cage Induction Motor Definition: A motor with a double-layered rotor designed to enhance starting torque and efficiency. Starting Torque
Why Transformers Are Rated in kVA, Not in kW
Transformers are always rated in kVA (kilovolt-amperes) rather than kW (kilowatts) because their design is based on voltage and current capacity, not the power factor
Acidity Test of Transformer Insulating Oil
🔎 Quick Summary – Key Learnings from the Acidity Test of Transformer Oil Purpose: Measures the amount of potassium hydroxide (KOH) needed to neutralize acids
Dissolved Gas Analysis (DGA) Test of Transformer Oil
💡 Key learnings: DGA Definition: Dissolved gas analysis of transformer oil is a method used to examine gases formed due to thermal and electrical stresses
Working Principle and Basic Theory of Transformer Explained
A transformer is an essential electrical device that changes the voltage level of alternating current (AC) without altering its frequency. The working principle of a
Efficiency of Transformer: Formula, Calculation & Maximum Efficiency Explained
The transformer is a vital link between the load and the supply. The efficiency of the transformer is very important in view of energy saving.
Derive EMF Equation of Transformer with Diagram and Examples
Understanding the EMF equation of transformer is essential to grasp how transformers work. When a sinusoidal AC voltage is applied to the primary coil, it
Rotating Magnetic Field in a 3-Phase Induction Motor
The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120°. When the primary winding or stator is
Application of Squirrel Cage And Slip Ring Induction Motor
Squirrel cage and slip ring induction motors are widely used in industrial and commercial applications due to their ruggedness and efficiency. While both are types