Electrical Articles

Working principle of mercury vapor lamp

The extensive use of the mercury vapor lamp depends entirely upon the versatility of the mercury vapor as regards pressure, temperature, voltage and other characteristics, each change resulting in a…

Technical Editor May 8, 2018

Electrical Articles

Working principle of fluorescent lamp

Fluorescent lighting has a great advantage over other light sources in any application. The tubes can be obtained in a verity of lengths. With illumination in a variety of colors.…

Technical Editor May 8, 2018

Electrical Articles

Characteristics of DC generators

Following are three important characteristics of dc generators : No load saturation characteristics (Eg Vs I f) It is also called open circuit characteristics or magnetic characteristics. It gives the…

Technical Editor May 7, 2018

Electrical Articles

What is compensating winding

This winding is used for large DC machines to reduce the fluctuations in load. Like in case of turbogenerator and rolling mill motors. Their functions are to neutralize the cross…

Technical Editor May 7, 2018

Electrical Articles

Difference between lap winding and wave winding

Lap Winding Wave Winding Lap winding is suitable for low voltage and high current generator. Wave winding is suitable for high voltage but a low current generator. No. of parallel…

Technical Editor May 7, 2018

Electrical Articles

Application of different types of DC generator

Types of DC generator Application of DC generator Separately excited generator It is used for electroplating and booster. It can be used for lighting and power purpose with field regulator.…

Technical Editor May 6, 2018

Electrical Articles

Explain the difference between generator and motor

Following are the difference between generator and motor Generator Motor It converts mechanical energy into electrical energy. It converts electrical energy into mechanical energy. It is based on the principle…

Technical Editor May 6, 2018

Electrical Articles

Necessity of starter

At starting, heavy current is drawn by the dc motor from the supply as some time is required by the motor to gain speed and hence to built up back…

Technical Editor May 5, 2018

Electrical Articles

Characteristics of speed torque

The torque is proportional to armature current, the nature of these characteristics. At no load,Ta is no load speed. As the load is increased, torque also increases. To generate more…

Technical Editor May 5, 2018

Electrical Articles

Different types of motors

Series motor It develops very high starting torque and it has adjustable firing speed. It is suitable for any value of load which needs high starting torque. This motor is…

Technical Editor May 5, 2018