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A squirrel-cage rotor resembles a hamster or gerbil exercise wheel, and consists of a pair of ring-shaped conductors, connected together with numerous bar-shaped conductors. These bars are termed 'active conductors' because it is into these that voltages are induced by the machine's rotating magnetic field. The resulting currents circulate along the bars and return via the ring-shaped conductors which act to interconnect, or short-circuit, the common ends of the bar conductors.
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Why is current maximum when short circuited?
when its is short circuited there will not be any drop and hence the current will b maximum when its is short circuited there will not be any drop and hence the current will b maximum
How Impedance inversion may be obtained?
short circuited stub
Why insulation is needed on current carrying conductors?
To prevent the wire from getting short circuited to ground or even to other wires.
What happens when a motor is short circuited?
Shorting the motor's electrical supply will blow the fuse and the motor will run down and stop.
Why should current transformers be shunted before opening the secondary winding?
A current transformer's secondary must never be open-circuited. If the instrument fed by a CT needs to be removed, then the secondary terminals must be short-circuited first. This is because a large, and potentially-dangerous, secondary voltage will appear across an open-circuited CT. Normally, a set of links is provided at those terminals for this purpose.
Why it is not possible to insert the external resistance in the rotor circuit in a cage induction motor?
A squirrel-cage rotor consists of uninsulated copper or alumnium bars, short-circuited by rings located at opposite ends, and semi-enclosed within a laminated iron rotor, and there is no provision for any form of external connection. So it would be quite impractical to do what you suggest.
Why is it not possible to insert the external resistance in the rotor circuit in a cage induction motor?
A squirrel-cage rotor consists of uninsulated copper or alumnium bars, short-circuited by rings located at opposite ends, and semi-enclosed within a laminated iron rotor, and there is no provision for any form of external connection. So it would be quite impractical to do what you suggest.
Why you use brushes for single phase induction motors?
There no brushes in an induction motor. The rotor is independent and is a short-circuited cage of parallel bars.
Why is current maximum when short circuited?
when its is short circuited there will not be any drop and hence the current will b maximum when its is short circuited there will not be any drop and hence the current will b maximum
Why induction motor is also called short circuit transformer?
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.
How do you get an iPhone that has short circuited?
Go to an ATT store, buy an iPhone, take it home and power it on. Then drop it in the toilet. There you go. iPhone that is short circuited.
What is induction motor in physics?
An induction motor consists of a rotor winding and stator winding. Rotor windings are short circuited and stator winding are given electrical AC supply .Now lets do the physics behind it . As the current starts to flow in the stator winding , magnetic flux start to produce around it . due to it's alternating nature that flux varies and according to farady law emf is induced in the rotor winding .Since the rotor winding is short circuited the current circulates in it .And when a current carrying conductor is placed in magnetic field it experiances a force and hence if start to rotate.
Working principle of ac motors?
Michael Faradeys laws of electromagnetic induction:When a current is passed through stator winding, an alternating flux created on the stator winding which in turn cuts a rotor winding(wire wound motor)/short circuited copper bar(squirrel cage motor), then a current flows through it and as above one motors works.
When inductor is called short circuit and open circuit?
In DC inductor is short circuited .
How Impedance inversion may be obtained?
short circuited stub
High level short circuit?
The short circuited path is the one which doesn't have any distributed elements(i.e., resistors, inductors,etc...). So the highly short circuited means only 'the connecting wire' is present in the circuit.
What is the difference between squirrel cage and slip ring induction motor?
the difference is that squirl cage the rotor is short circuited while it is on operation and out of operation while the rotor of the bother one is connected to nexternal circuit to reduce the starting intial current
