we have a 3 phase induction motor, having stator length greater than rotor length by 10mm. my question is that, is this will affect the operation of motor (means cause an abnormal condition like temp. rise etc.)?

SGhosh

• May 15th, 2012

In my opinion, only in case the rotor is not centered axially with the stator will lead to vibrations. The difference in the lengths of the rotor & stator will lead to more leakage flux leading to poo...

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there is a Series of turbines made by Siemens, one of them are SST - 150, in which SST stands for siemens steam turbine, what is 150 stands for?

preet

• Oct 4th, 2012

150 is the frame size

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If we put field winding on stator and armature winding on rotor then how will it operate? Will it rotate at synchronous speed or not? (Assuming that the alternator is feasible)

nikhilsharma2009

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• Sep 15th, 2009

Yes, It would surely operate and run at synchronous speed. But it would be uneconomical because we should have 3 slip rings of very high current handling capacity and because of this efficiency will decrease and we will require to have high level of insulation and cooling also.

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