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Why induction motor is also called short circuit transformer?
ShaunMarshgp7659
- Like transformer induction motor has stator winding(Primary winding) and rotor winding(Secondary winding) separated by an airgap.
- Rotor winding(generally Al bars) are short circuited at the end to produce torque for the rotation.
- Hence the name short circuited transformer.
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∙ 8y ago
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How are the two circuits of an induction motor similar to the circuit of a transformer?
They are magnetically coupled--a current in one circuit induces a current in the other one in both a transformer and an induction motor.
Difference between transformer and induction motor?
1. Induction Motor has an air-gap but transformer has no air gap rather it is mutually link. 2. Induction Motor has high no-load current than transformer. 3. Induction Motor is a dynamic device. 4. Induction Motor has high power factor.
What is an inducting motor?
induction motor has two control system one is stator control another rotor control And it comes under the category of asynchronous motors. The term induction is because the rotor of an a.c motor does not receive the electric power through conduction but by induction same as the secondary of the transformer receives the power from primary. And so an induction motor can also be called as a rotating transformer i.e. one in which primary is stationary and secondary is free to rotate.
Why dc motor is not named as conduction motor?
In dc motors, the electric power is conducted directly to the armature (i.e., rotating part) through brushes & commutator. Hence, in this sense a dc motor can be called as a Conduction motor. However, in ac motors, the rotor does not receive any electric power by conduction but by induction in exactly the same way as the secondary of a two winding transformer receives its power from the primary. That is why such motors are called as Induction motors. An induction motor can be treated as a rotating transformer i.e., one in which primary winding is stationary but secondary is free to rotate.
What is the relationship between an induction motor and transformer?
In an induction motor, power is supplied to the rotor using a changing magnetic flux i.e. without any true conductive contact. Similarly, in a transformer, the power is transferred from the primary coil to the secondry one using a varying magnetic flux and the plates have no physical linkage. Hence, the similarity between an induction motor and a transformer is very basic i.e. they both use the phenomenon of electromagnetic induction to transfer power from one part to another.
Why less current increases in transformer than in induction motor when load is increase?
The current flowing through a transformer's secondary is the current drawn by the load, so it will be exactly the same as the current flowing through your induction motor -assuming that is the load. Don't really understand the point of your question!
What are the different types of induction motors?
DOL(Direct Online starting) Star Delta starting Auto transformer starting Above methods are for squirrel cage induction motor Rotor resistance starting is used for wound rotor or slip ring induction motor
Why short circuiting rings are used in squirrel cage motor?
Squirrel Cage motor is a kind of Induction Motor. The reason an induction motor sometimes refered to a rotating transformer is because the stator (Primary windings in a transformer), which is powered to set up a magnetic field induces a current in the armature coils (secondar coils in a transformer). However, instead of giving an electrical power output, the coil is short circuited to produce mechanical output (torque in this case)
What is meant by induction machine?
An induction motor is so-called because the currents circulating in the machine's rotor are due to voltages induced into the rotor conductors through 'transformer action' from the field windings located on the stator. In other words, there is no external electrical supply to the rotor which, instead, behaves in a similar manner to the secondary winding of a transformer.
Why a ac motor is called as a induction motor?
as it works on induced voltage on rotor according to faradays law of electromagnetic inductio ac motors called as induction motor The AC motors works in the same principle as that of a Transformer. The AC supply is given to the stator and a rotating flux is set up in it. According to Faraday's Law, a voltage is induced in the rotor conductors as these conductors are in closed circuit, a current starts flowing through them as a result a magnetic flux is created around the conductors. Due to the interaction of the fluxes a torque is setup and the rotor rotates.
Why transformer does not rotate like induction motor Inspite both having same principle?
because transformer has primary and secondary windings only but in motor has stator has two windings and rotorAnswerIt could be something to do with the part that there are no moving parts!
Core loss of an induction motor?
Just like a transformer, the core losses are a combination of eddy current losses and hysteresis losses.
