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|sigal phase supply is 230 v ac
two phase supply is 415 v ac
why three phase supply is 415 v ac why not 690 v ac
|what is 3rd Harmonics? how it is generated in alternator
|why does a dc machine has high efficiency while working as a
generator than as a motor
|campared to ac, in dc corona loss is
|Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV /
440KV this type of ratio. why cant we use other voltage
ratio like 54KV / 99KV et.,
|what is the significance of per unit impedance ?
|We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce
but we had one prob.that motor winding temp increase up to 135 deg.we
want reduce this temp.what to do?we arrange ext.cooling fan but not much
effect.we want reduce this temp. Inhouse without affecting much.cost. also
don't want reWINDING OF MOTOR?
|which will glow brighter?bulb 1 (110v,100w) and bulb 2
(230v.200w) series connection
|what is the significance of KV & MVA rating of the
transformer and how they are related.
|I want to know in body earthing which material can be use
either copper plate or GI plate please guide us which is
|what's the reson that,Load is not same on VFD I/P and O/P
Side.whenever DOL condition load is same I/P and O/P side.
|why dc series moter is not started at no load?
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