If rotor speed will more than synchronous speed , slip will negative. and induction motor will now working as a induction generator. But how this negative slip can be maintain during its generation from IG and suggest me in details regarding operation of Induction Generator.

cmallick1201

 Profile Answers by cmallick1201 Questions by cmallick1201

• Jan 8th, 2013

Any shaft of the rotor is connect with a prime mover which is able to move the rotor greater than its synchronous speed, then negative slip can be maintained.

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Why do not we use salient pole alternators in thermal power stations?

umeshprabhu

• Mar 11th, 2013

The Salient pole alternator because of its large diameter and short axial length takes more time to complete one revolution for a pair of poles under a coil, so the frequency of induced emf which is p...

cmallick1201

 Profile Answers by cmallick1201 Questions by cmallick1201

• Jan 8th, 2013

Salient pole rotor has larger diameter than cylindrical rotor. In thermal power plant rotor should rotate in high speed so that salient pole will unstable due to larger diameter so that we cant use salient pole in thermal power plant.

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Why capacitors are used in 1 phase induction motors?

SONY RANJAN MAHAPATRA

• Jun 25th, 2013

Basically function of capacitor is to improve the power factor and make the single phase motor self start having made split phase between both the winding(starting & running winding)

shaik sharif

• Jun 5th, 2013

In generally capacitors are playing main role in electrical system.And also power factor improvement done by capacitors so therefore capacitors mainly using for increase the starting torque of the motor.

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