how can we run the induction motor at 9000 rpm ,by keeping frequency constant??

2 Answers  

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What is third harmonic?what is the effect of it?

0 Answers   GMR,

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I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 Answers  

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what is mean by VCB colour code..???

1 Answers   Student,

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WHAT HAPPENS IF FUSE IS CONNECTED TO NEUTRAL WIRE

5 Answers  

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What is the difference between reciprocating & rotary motors in AC units, which is the best one in terms of operation.

2 Answers   MacLellan,

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what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines

4 Answers  

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why does rotor rotets?

0 Answers   IBM,

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in 11kv generators the neutral point is connected to earth via earth coil while in the 33 / 11 kv transformer the neutral point is connected to earth via earth resistor why? 

1 Answers  

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Current Capacity of 55sqmm & 80sqmm conductor

2 Answers  

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what is Different between Bilinear and Unilenier?

0 Answers   ABB,

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why colour of electrical equipment( like transformer) is grey

10 Answers   Trident,

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