Answer Posted / mahaveer prasad

ampere

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

1820

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I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3850

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What is meant by full pitched winding?

1257

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Why the standard of ambient teperature mentioned as 40 degree celcius in machines.

2051

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Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

2105

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what reactive how to maintain

1884

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What is the size of a 60 watt and 80 watt tubelight?

2205

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when ID fan will immediately stop through VFD what exactly cause and problem the ID fan

1517

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how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.

2433

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How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

2973

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Please define ampere?

1176

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difference between a diode and thyristor?

2279

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Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

2219

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Describe Non I.S. Earth System and why is it used?

1847

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What's the difference between non break power supply and non break non short break power supply

1508

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