draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups 

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how many frequent start/stop operation possible in case of HT MOTORS.

5 Answers   DVC, Steel Plant,

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what are the condition that makes hooter blow?

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how i define power factor when some one ask me ,,,,,what is power factor ,,,,,pleas define it simple. (pleas dont use these worlds ,,the difrence bitween apparent power and actual power is power facter )

1 Answers  

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what is mean by induction & conduction principle ? how they differ from each other ? thank you

1 Answers  

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Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?

10 Answers  

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what is meant by armature reaction?

13 Answers  

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how squirrel cage & slip ring motor works? how they differ from each other

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what is the purpose of vector group in a transformer ? if 2 tranaformers r connected in parallel the vector group is same or not? for parallel operation 2 transformers of different manufacturers maintain same vector group or not?

3 Answers   Orchid,

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how calculate kva in to kw

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What are the different power system losses and how can it be eliminated?

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what is phase angle ? and also tells me why my phase-phase voltages are 390 rather then my single phase voltages are 221 and 223 respectivly?

2 Answers  

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