Working Principle Of Dc Motor

February 16, 2024 Post a Comment

Working principle 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”.

What is the working principle of motor?

Principle: An electric motor (dc motor) works on the principle that when an electric current is passed through a conductor placed normally in a magnetic field, a force acts on the conductor as a result of which the conductor begins to move and mechanical energy is obtained.

What is the working principle of dc motor and generator?

A DC generator is an electrical machine whose main function is to convert mechanical energy into electricity. When the conductor slashes magnetic flux, an emf will be generated based on the electromagnetic induction principle of Faraday's Laws.

What is the working principle of dc motor Mcq?

What is the working principle of DC motor? Explanation: The working principle of motor Fleming's left hand rule. It states that, when a current carrying conductor is place in a magnetic field then it experiences a force. The direction of force can be determined by Fleming's left hand rule.

What are the 3 types of DC motors?

Types of DC Motor

Series DC Motor.
Shunt/Parallel DC Motor.
Compound DC Motors.
Permanent Magnet DC Motor.

What is the principle of motor explain with diagram?

An electric motor works on the principle of magnetic effect of electric current. In an electric motor, a rectangular coil ABCD in placed between two magnets in poles N and S. Now, current is passed through it continuously. When current is passed into the coil, it produces a magnetic field around it.

What is simple DC motor?

A simple DC motor has a stationary set of magnets in the stator and an armature with one or more windings of insulated wire wrapped around a soft iron core that concentrates the magnetic field. The windings usually have multiple turns around the core, and in large motors there can be several parallel current paths.

What is the principle of DC circuit?

In series DC circuits, resistive elements are connected in an end to end way, creating a linear path for flowing current. Here, resistors R1, R2 and R3 are attached in series over a voltage source of V volts. Electrical current 'I' is running through the given resistors.

What is dc motor application?

Major applications for DC motors are: elevators, steel mills, rolling mills, locomotives, and excavators. Like other rotating machines, DC motors result from the interaction of two magnets.

Why is DC motor used?

DC motors have the advantage of: higher starting torque, quick starting and stopping, reversing, variable speeds with voltage input and they are easier and cheaper to control than AC.

What is armature in DC motor?

A DC motor has coils of wire mounted in slots on a cylinder of ferromagnetic material, which is termed the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by permanent magnets or current passing through coils of wire, which are called the field coils.

What are types of DC motors?

There are 4 main types of DC motors:

Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux.
Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. ...
Shunt DC Motors.
Compound DC Motors.

What is name of DC motor?

There are 3 main types of DC motor that are available: Series, Shunt and Compound. These terms relate to the type of connection of the field windings with respect to the armature circuit.

What is DC motor examples?

Various DC Motor Applications Series DC motors are generally used where high starting torque is required, and speed variations are possible. These types of direct connection motors are, for instance, used in the traction system, cranes, air compressors, vacuum cleaners, sewing machines, etc.

What are the 6 parts of a DC motor?

These components are: a stator, a rotor, a yoke, poles, armature windings, field windings, commutator, and brushes.

What is difference between AC and DC motor?

In AC motors, the armature is stationary while the magnetic field rotates. In DC motors, the armature rotates while the magnetic field remains stationary. In AC motors, three input terminals (RYB) are present. In DC motors, two input terminals (positive and negative) are present.

How does a DC motor rotate?

The rotation of the DC motor is accomplished by the force which is developed on a current-carrying conductor in a magnetic field. The current-carrying conductor is connected to the shaft which is able to rotate relative to the stationary body of the DC motor.

What is the function of the armature?

The function of an armature is multi-purposed. The main role is to conduct current over the field, thus generating shaft torque within an active machine. The secondary purpose of an armature is to produce Electromotive Force (EMF).

What is the key principle of DC voltage?

DC generators produce electrical power based on the principle of faradays law of electromagnetic induction. Based on this law, when a conductor moves in a magnetic field, the magnetic lines of force are cut. This leads to an electromagnetic force induction in the conductor.

What is the principle of dc/dc conversion?

The working principle of the DC-to-DC converter is that the inductor in the input resistance has the unexpected variation in the input current. If the switch is on, then the inductor feeds the energy from the input and it stores the energy of magnetic energy. If the switch is closed, it discharges the energy.