What are the Types of Conductor Strandings...???

Solid vs. Stranded Conductors:                   Stranding is an important aspect of cable construction to consider. Some cables are available in both solid and stranded forms, but, generally, smaller cables are solid while...

What are the types of Conductors used in Overhead Power Lines…

Conductor is a physical medium to carry electrical energy form one place to other. It is an important component of overhead and underground electrical transmission and distribution systems. The choice of conductor depends on the cost and efficiency. An ideal conductor has...

Why Lighting transformers are used ?

(2 Min Read)Lighting Transformers are designed to supply power to lighting equipment in a commercial / industrial / domestic unit.Lighting transformers serves as isolation between primary and secondary, it also restricts any high voltage spikes and EMF coming with the raw...

Why Relay often has two ratings AC and DC...? How to choose the correct one ...???

The contacts in a relay (and the same is true for other switches) have to be able to safely and repeatedly allow and interrupt the rated current.  Interrupting is hard on the contacts, since there is always some inductance in the circuit, which creates a high voltage...

Why Starting Current of Induction Motor is High ???

Starting Current in Induction Motor: Starting current of induction motor is as high as 5 to 7 times the normal full load current. Therefore different starting of induction motor, methods such as (star delta starter, auto transformer starter and other starting methods)...

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...