Indepth Electrical engineering

Effects of Low and High Voltage on Induction Motors The motor nameplate specifies the voltage range within which an induction motor is designed to operate. Operating motors outside this specified voltage range—either too low or too high—can lead to reduced efficiency, overheating, and even premature motor failure . 1. Power Equation for Induction Motors P = V × I × Power Factor P = V \times I \times \text{Power Factor} If voltage decreases , current must increase (for the same power output). If voltage increases , current may not always decrease because of magnetic saturation effects in the motor core. 2. Effects of Low Voltage on Induction Motors When the applied voltage falls below the motor’s rated range: Current increases to maintain power output. This excessive current leads to overheating and possible burnout if protection devices fail. Efficiency drops as copper (I²R) losses increase. Torque reduces since torque is proportional to the s...

Who Discovered Electricity? A Journey Through History Electricity is the backbone of modern life —from lighting our homes to running industries, everything depends on it. But have you ever wondered: Who discovered electricity and when? The answer isn’t simple. Electricity wasn’t “invented” (since it’s a natural form of energy), but rather discovered, studied, and developed by many scientists over centuries. Let’s explore how electricity evolved into the powerful force we use today. Early Discoveries of Electricity 600 BC – Ancient Greeks The Greeks noticed that rubbing fur on amber caused them to attract each other. This was the first observation of static electricity . 17th Century Developments By the 1600s and 1700s, many discoveries laid the foundation of electrical science: Invention of the electrostatic generator Understanding positive and negative charges Classification of materials into conductors and insulators Pioneers of Electricity William Gilbert (1600...