# Working Principle Of Motor And Generator Pdf

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Schematics and operation of different types of motor DC motors Motors and generators Alternators Back emf 'Universal' motors Build a simple motor AC motors synchronous and stepper motors Induction motors Squirrel cage motors Three phase induction motors Linear motors Homopolar motors and generators separate page. For example, the animation at right has just one loop of wire, no bearings and a very simple geometry.

The Electric Motor and Generator are differentiated on various factors like the main principle of working or function of the motor and generator.

## Electric Motor

Generators are useful appliances that supply electrical power during a power outage and prevent discontinuity of daily activities or disruption of business operations. Generators are available in different electrical and physical configurations for use in different applications. In the following sections, we will look at how a generator functions, the main components of a generator, and how a generator operates as a secondary source of electrical power in residential and industrial applications. An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit. This flow of electric charges constitutes the output electric current supplied by the generator.

Question 1 What is an electric motor? Question 2 On what principle does electric motor works? Question 3 Explain the construction of electric motor? Question 4 Give commercial use of electric motor? Question 5 Give uses of D. Electric Motor is a device which converts electrical energy into mechanical energy. The principle of the electric motor is based on the fact that a current carrying conductor produces a magnetic field around it.

A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. This article outlines basic construction and working of a DC generator. Note: Theoretically, a DC generator can be used as a DC motor without any constructional changes and vice versa is also possible. These basic constructional details are also valid for the construction of a DC motor. Hence, let's call this point as construction of a DC machine instead of just 'construction of a dc generator'.

## Commutator (electric)

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. Two or more electrical contacts called " brushes " made of a soft conductive material like carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings coils of wire on the armature are connected to the commutator segments. Commutators are used in direct current DC machines: dynamos DC generators and many DC motors as well as universal motors. In a motor the commutator applies electric current to the windings. By reversing the current direction in the rotating windings each half turn, a steady rotating force torque is produced.

The initial electromagnetic generator Faraday disk was invented by British scientist namely Michael Faraday in the year A DC generator is an electrical device used for generating electrical energy. The main function of this device is to change mechanical energy into electrical energy. There are several types of mechanical energy sources available such as hand cranks, internal combustion engines, water turbines, gas and steam turbines. The generator provides power to all the electrical power grids.

operating principle of electromagnetic generators. The principle source of many later inventions, including the DC electric motor, the AC alternator, the AC.

## Electric motor

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The electric generator was invented before the correlation between electricity as well as magnetism was discovered. These generators use electrostatic principles to operate with the help of plates, moving belts which are charged electrically as well as disks to carry charge toward an electrode with high potential. Generators use two mechanisms to generate the charge like the triboelectric effect otherwise electrostatic induction. So, it generates low current as well as very high voltage due to the complexity of insulating machines as well as their inefficiency.

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. Electric motors can be powered by direct current DC sources, such as from batteries, or rectifiers , or by alternating current AC sources, such as a power grid, inverters or electrical generators. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy. Electric motors may be classified by considerations such as power source type, internal construction, application and type of motion output.

#### DC Generator

Надо звонить Стратмору. - Домой? - ужаснулся Бринкерхофф.  - Вечером в субботу. - Нет, - сказала Мидж.  - Насколько я знаю Стратмора, это его дела.

Худоба и неловкость подростка бесследно исчезли. С годами она приобрела гибкость и грацию. У нее была высокая стройная фигура с пышной грудью и по-юношески плоским животом. Дэвид шутил, что она может стать первой моделью для рекламы купальников, имеющей докторскую степень по прикладной математике и теории чисел. Через несколько месяцев оба начали подозревать, что обрели нечто такое, что может продлиться всю жизнь.

Он опустил глаза и посмотрел на ее протянутую руку. - Речь идет о засекреченной информации, хранящейся в личном помещении директора. Ты только представь себе, что будет, если об этом станет известно. - Директор в Южной Америке. - Извини.

- Она показала ему другую колонку.

Слишком рано. Беккер беззвучно выругался. Уже два часа утра. - Pi'dame uno. Вызовите мне машину.

- Да-да, я и ищу спутницу.  - Беккер понял, что совершил какой-то промах. - Да, наше агентство предоставляет сопровождающих бизнесменам для обедов и ужинов. Вот почему мы внесены в телефонный справочник.

Как быстрее добраться до аэропорта. - У входа возьмешь такси.

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current (dc) motor or generator, the induction motor or generator, and a number comprehend the physical principles governing the operation of electric rotating.

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A dynamo is an electrical generator that creates direct current using a commutator.

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