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Types of starters

Various types of starters are as follows: Stator resistance starter. Star delta starter. Autotransformer starting. Rotor resistance starters. Variable stator frequency starting. Stator resistance starter A starter resistance is connected in each line series with each phase

Comparison of Induction motor and DC motors

Parameter DC motors Induction motors Supply DC AC Maintenance Frequent Less frequent Speed Low High Size and weight Large Small Speed control Rheostatic control, field control Stator voltage control, stator frequency control. Applications Lathe machine,drilling and milling

Construction of 3-phase induction motor

Construction : Conversion of electrical power into mechanical power takes place in the rotating part of an electric motor. In A.C. motors, rotor receives electric power by induction in exactly the same way as the secondary of

Parts of induction motor

A table showing the different parts of motor, the material used for the parts and function of the parts : Parts Material Function Stator frame Case iron Supports the core,protects inner-parts. Stator core Silicon steel Houses stator

Wind tree

Wind Tree, as we can guess from the name, is a wind turbine that looks like a tree. But, that is just a speck of this unconventional wind turbine’s definition. Noisy, Monstrous, Nauseous, giant, unpleasant, bird scaring

Principal of CRT (Cathode ray tube)

Principal of CRT : It consists of an electron gun. The electron gun produce an electron beam. The beam is narrow and is allowed to pass down the tube, and to fall on the screen. The screen

Advantages and disadvantages of digital multimeter

Following are the advantages of digital multimeter : They are having high input impendence, So there is no loading effect. They are having higher accuracy. An unambiguous reading is obtained. The output can be interfaced with external

Ohmmeter

The meter which measures the resistance and the continuity of the electrical circuit and their components such type of meter is known as the ohmmeter. It measures the resistance in ohms. The range of a megger may extend to more

Introduction of CRO (cathode ray oscilloscope)

The most versatile tool which can be used for the development of electronic circuits and systems is the Cathode ray oscilloscope. It allows the amplitude of electrical signals, whether they are voltage, current or power, to be

Comparison between analog wattmeter and digital wattmeter

Analog Wattmeter Digital Wattmeter Due to moving parts there are losses and friction at bearings. As there are no moving parts,mechanical losses are reduced. Accuracy is less compared to digital wattmeters. Accuracy is high as compared to