Answer / elango.kalp

energy efficent motors means losses are minimised.
1.area of cross section of conductor have been increased to
reduce copper loss.
2.thickness of lamnination has been reduced and crgo
technique has been used.
3.c3 ballbearings have been used it has good clearance
between each rollers and lubrication is proper-friction
loss is reduced
4.rotor length is increased and air gap b/w stator and
rotor is reduced- windage loss is reduced
5.plastic fan has been used

the over all efficency of energy efficient motor is 93.6%

WE HAVE A PROBLEM THAT THE MAIN DRIVE OF OUR CEMENT MILL HAS AN EARTHING PROBLEM?TWO OF STATOR WINDINGS INSULATION HAS BEEN COLLAPSED DUE TO AGING PROBLEM.THE PHASES HAVE BEEN BYPASSED AND NOW THE LOAD HAS BEEN INCREASED.WE CAN'T REPLACE THE MOTOR.KINDLY HELP ME BY GIVING SUGGESTION THAT HOW TO MAINTAIN THE STARTING TORQUE AND CURRENT FOR HIGH LOADS.

1 Answers   ACC,

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How damper winding in synchronous motor suppress Hunting?

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battery dis charge condition long time condtion?

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how many hvdc lines in india???

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Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

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why ELCB's are not useful for operation theater equipments ?

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4 Answers   NTPC, WS,

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Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.

0 Answers  

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