What is an Electric Motor?
An electric motor is an energy transformation machinery. It transforms electrical energy into mechanical energy. In other consumes electrical energy and delivers mechanical energy in the form of rotations. For…
Generate electricity from electricity – Is that possible?
“Can we generate electricity from electricity?” This is a quite common question that many people ask. The answer for this question is amazingly simple but tricky. We need to understand…
Why are overhead transmission lines not insulated?
Overhead transmission lines are not insulated primarily due to three reasons: first and foremost is to reduce the weight of the lines, secondly to save cost and the last is…
Difference between utilization categories AC-1 and AC-3
The utilization categories AC-1 and AC-3 defines making, breaking and continuous operation current rating for contactors. Based on these rating, contactor for switching of resistive loads and switching of squirrel…
Top 10 tricks to save on electricity bills
A few small behavioural changes and other adjustments can help us save electricity as well as electricity bills. By saving electricity we are not only saving money but also saving…
Calculate the power consumption of AC & Electricity usage
Its hot inside lets turn on the AC!! The air conditioner is one of the high power consuming appliances at home. During sunny days you might have noticed a drastic…
Thevenin’s Theorem -explanation, equivalent circuit & examples
Circuits can contain many power sources and power dissipation elements. It is common that any one of the elements in the circuit is a variable while all others are fixed.…
High Leg delta connection
Power is transmitted over long distances at high voltage. In order to supply domestic and residential applications, it needs to be stepped down to 120V or 230V single phase. This…
Electrical wiring color codes – Important
Electrical engineers and electricians follow predefined wiring color codes while wiring houses, commercial buildings and industrial panel boards. It is mandatory to know the electrical wiring color codes before attempting…
Difference between NO and NC
In every control circuits and automation systems, logic is developed based on the open or closed state of switches, sensors or relays. Hence it is mandatory to know the concept…
