Why LT motors are delta connected and HT motors are star connected ???

Why LT motors are delta connected and HT motors are star connected? Ø  Reason is techno commercial. Ø  In star, phase current is same as line current. But phase voltage is 1/1.732 times line voltage.So insulation required in case of HT motor is less. Ø  The starting...

Working principle of 3Ph. Induction motor...

An electrical motor is such an electromechanical device which converts electrical energy into a mechanical energy. In case of three phase AC operation, most widely used motor is Three phase induction motor as this type of motor does not require any starting device or...

Induction motor is a generalized transformer...

Introduction: What is the fundamental difference in working principle of induction motor and transformer?That is even though the equivalent circuit of motor and transformer is same rotor of motor rotates whereas secondary of transformer do not. Alternating flux machine...

Why is My 12 Volt Battery Reading as 13 Volts?

Why is My 12 Volt Battery Reading as 13 Volts? All Lead acid batteries (Gel, AGM, Flooded, Drycell, etc) are made up of a series of 2.2 volt cells that are bridged together in series to reach their final desired voltage. For instance, a 6 volt battery will...

What is Transimpesdence Amplifier ???

    One of the first things you learn about operational amplifiers (op amps) is that the op amp's gain is very high. Now, let's connect a feedback resistor across it, from the output to the -input. When you put some input current into the -input (also known...

Quick note to Choose the right frame size of motors...

       To confidence you are ordering the right motor for your specific application, you must understand motor frame designations. Miniaturization isn't just for electronics. And you probably know carmakers pack more ponies into smaller engines these...

Detailed explanation of Battery Charging with Modes ....

            Mobile devices are becoming an integrated part of our daily life. Let’s use the smartphone as an example. Instead of a simple phone call function, smartphones are now packed with rich features for social networking, web browsing,...

Difference between unearthed cables and earthed cables and their relationship with Insulatuon level

Introduction: In HT electrical distribution, the system can be earthed or unearthed. The selection of earthed/unearthed cable will depend on system. If distribution system is earthed then we have to use cable which is manufactured for earthed system. (Which the manufacturer...

What is XLPE and PVC Insulations in Conductors ?

PVC is Polyvinyl Chloride and XLPE is cross linked Poly ethylene which is more chemically stableXLPE cable can be used for Low, medium and high voltage applications. Conductor is insulated with XLPE which can withstand higher conductor temperature during...