Hint:Electric motor uses the
principle of magnetic force on a current carrying conductor
. The direction of force depends on the direction of current flow and magnetic field. However, we can fix the magnetic field and create torque on a loop depending on the current flow. That is how electric motors are constructed.
What is the construction of electric motor?
The electric motor construction can be done using the
rotor, bearings, stator, air gap, windings, commutator
, etc. The rotor in an electric motor is the moving part, and the main function of this is to rotate the shaft for generating the mechanical power.
What is the principle behind the working of an electric motor explain its construction and working with the help of a well labeled diagram?
Principle of motor : A motor works on the principle that
when a rectangular coil is placed in a magnetic field and current is passed through it
. A force acts on the coil which rotates it continuously. When electric current is passed into the rectangular coil, this current produces a magnetic field around the coil.
What are the principles of an electric motor?
An electric motor works on the principle that when
a rectangular coil is placed in a magnetic field and a current is passed through it
, a force acts on the coil which rotates it continuously. Hence, electrical energy is converted into mechanical energy.
What is principle construction and working of DC motor?
The DC motor is the motor which converts the direct current into the mechanical work. It works on the principle of
Lorentz Law
, which states that “the current carrying conductor placed in a magnetic and electric field experience a force”. And that force is the Lorentz force.
What is electric motor explain its working with diagram?
An electric motor is
a rotating device that converts electrical energy to mechanical energy working
. Working: Current in the coil ABCD enters from the source battery through conducting brush X and flow back to the battery through brush Y. Notice that the current in the arm AB of the coil flows from A to B.
What is the working of motor?
Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. They transform
electrical energy into mechanical energy
.
What are the advantages of electric motor?
Electrical motors are
more environmentally-friendly
, as they do not cause pollution by burning fossil fuels, which in turn produces harmful greenhouse gases. Electrical motors generally save the end-user money over time, while gasoline engines are more expensive in comparison.
What are the types of electric motors?
- AC Brushless Motors. AC brushless motors are some of the most popular in motion control. …
- DC Brushed Motors. In a DC brushed motor, brush orientation on the stator determines current flow. …
- DC Brushless Motors. …
- Direct Drive. …
- Linear Motors. …
- Servo Motors. …
- Stepper Motors.
What is the role of commutator in electric motor?
The commutator
assures that the current from the generator always flows in one direction
. … On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.
What is the principle of an electric?
Electricity, simply put, is
the flow of electric current along a conductor
. This electric current takes the form of free electrons that transfer from one atom to the next. Thus, the more free electrons a material has, the better it conducts.
Is an electric motor AC or DC?
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.
What is the working principle of transformer?
Principle – A transformer works on the principle of
mutual induction
. Mutual induction is the phenomenon by which when the amount of magnetic flux linked with a coil changes, an E.M.F. is induced in the neighboring coil. A transformer is made up of a rectangular iron core.
What is the working principle of DC machine?
The working principle of a DC machine is
when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque that rotates the dc motor
. The DC machines are classified into two types such as DC generator as well as DC motor.
What is the working principle of generator?
Electric generators work on the principle of
electromagnetic induction
. A conductor coil (a copper coil tightly wound onto a metal core) is rotated rapidly between the poles of a horseshoe type magnet. The conductor coil along with its core is known as an armature.
