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Current passed through a coil of wire (winding inside the motor) creates a magnetic field. In a properly designed motor, this field will be attracted to, or repelled from, another magnetic field also created in the motor. The attraction or repulsion is a force, and in a motor the force is directed to cause rotary motion -- hence, torque.
This is because the windings of the rotating part of the motor will create fields in opposition to the windings in the stationary part of the motor -- similar to the way north and south poles on a bar magnet attract each other while 2 norths or 2 souths repel each other.
What else can I help you with?
What is the difference between electromagnetic torque and load torque in electrical machines?
Electromagnetic torque and load torque are different.Electromagnetic torque is the torque that is produced inside the machine which makes the machine rotate,while load torque is the torque that is applied externally with brake drum and and spring balance.Electromagnetic torque can be varied by varying the speed of the machine,but load torque is fixed.
What is induction motor?
Induction motor is an AC electric motor which uses electromagnetic induction to induce the electric current in the rotor to produce torque.
Why electromagnetic torque opposes prime mover torque in dc generator?
It's a practical example of the conservation of energy, and is explained by Lenz's Law. The direction of the load current is such that its magnetic field will create a force acting in the opposite direction to the force causing the conductor to move in the first place.
What is the explanation for the mechanism of DC in pmmc?
a pmmc has a coil suspended in permanent magnetic field.acording to the laws of electromagnetism a current carrying coil susspended in a magnetic field experiences an electromagnetic torque.This torque is counterbalanced by the mechanical torque devoloped in the coil in equlibrium.The angle teta can be measured and it is calibrated to directly give the current
What is the definition of eletromagnetic?
It depends what you are talking about... Electromagnetic field Electromagnetic force Electromagnetic radiation Electromagnetic spectrum Electromagnetic therapy Electromagnetic waves ...they each have different meanings.
What is the torque on a torque converter?
Torque output of the engine at that speed.
How are electromagnetic waves transfered?
Electromagnetic waves are transferred by electromagnetic radiation.
What carries electromagnetic radiation?
Electromagnetic radiation is carried by electromagnetic waves.
What is the principle of electromagnetic crane?
the principle on which an electromagnetic crane works is electromagnetic induction
What is working of PMMC?
In PMMC meter or (D'Arsonval) meter or galvanometer all are the same instrument, a coil of fine wire is suspended in a magnetic field produced by permanent magnet. According to the fundamental law of electromagnetic force, the coil will rotate in the magnetic field when it carries an electric current by electromagnetic (EM) torque effect. A pointer which attached the movable coil will deflect according to the amount of current to be measured which applied to the coil. The (EM) torque is counterbalance by the mechanical torque of control springs attached to the movable coil also. When the torques are balanced the moving coil will stopped and its angular deflection represent the amount of electrical current to be measured against a fixed reference, called a scale. If the permanent magnet field is uniform and the spring linear, then the pointer deflection is also linear
What type of electromagnetic clutch is used in late model vehicles?
Late model vehicles typically use electronically controlled electromagnetic clutches, which are more efficient and responsive compared to traditional mechanical clutches. These clutches allow for precise control of torque transfer and are often used in applications such as automatic transmissions and all-wheel drive systems in modern vehicles.
How the slip vary with load?
The slip vary with load is a AC electric motor which the electric current in the rotor needed to make torque that is induced by electromagnetic induction. It does not repair mechanical commutation parts the energy and transferred from stator to rotor.
