DC motors are usually seen in applications where the motor speed needs to be externally controlled. AC motors work best in applications where power performance is sought for extended periods of time. All DC motors are single phase, but AC motors can be single phase or three phase.
AC and DC motors use the same principle of using an armature winding and magnetic field except with DC motors, the armature rotates while the magnetic field doesn’t rotate. In AC motors the armature does not rotate and the magnetic field continuously rotates.
In some applications today, DC electric motors are replaced by combining an AC electric motor with an electronic speed controller, known as variable frequency drives. DC electric motors are replaced with an AC electric motor and an electronic speed controller because it is a more economical and less expensive solution.
DC electric motors have many moving parts that are expensive to replace, and DC electric motor repair is usually more expensive than using a new AC electric motor with an electronic controller.
In our experience, combining an AC motor and drive proves to be the most cost effective solution for mostapplications. When servicing our customers in the field, we often recommend looking at the SMVector Series Variable Frequency Drive in combination with a three phase AC motor.
Answer:
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Conditioning creates the brain's pattern recognition which makes it easier or harder. Abusive conditioning makes recognizing kind/nonviolent much more difficult, etc.
From 1750-1900, It can be seen that the Atlantic Revolutions were known to share similar causes because they reacted back to the oppression of Absolutists governments and their ernest desire for popular sovereignty.
<h3>What is the similarity of the Atlantic
Revolutions?</h3>
They are also known for the fact that they wanted to free themselves from the mercantilist policies and have their personal economic autonomy. They are known to be inspired by great thinking based on the freedoms of religion.
The Atlantic revolutions influenced the early modern historical developments as it help to bring about an era of new social organization e.g. the emergence of democracies.
Learn more about the Atlantic Revolutions from
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Globalization and interdependence have economic effects, like the increased competition between local and foreign businesses, investment of multinational companies in the developing world, employment opportunities in some regions, and unemployment in others.
