Answer / mn krishnamurthy

Line volgae is Root 3 of phase voltage

Define damping ratio.

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give me a clear defination of inductance,and how can u calculate inductance of a motor

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WHEN TWO ALTERNATORS ARE OPERATING IN PARALLEL, EXPLAIN WHY IT IS OBJECTIONABLE TO OPERATE ONE AT A LEADING POWER FACTOR AND ONE AT THE Lagging power factor?

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what is rocking arrangement in arc heating

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What is meant by IP55 motor.Where it is used?

2 Answers   Zuari,

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1 Answers  

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how could we findout the lightning arrester failed or not in live circuit? Is there any instrument to measure the high voltage at the time of sky lighting?

1 Answers  

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What is delta stare switch?

1 Answers   Samsung,

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i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

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what is consequences of neutral and earth connect?

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Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?

2 Answers   L&T,

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we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

0 Answers   MTN,

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