Answer / b sumanth kumar

Due to the property of residual magnetism.According to
residual magnetism property when motor is turned off then
the magnetism property of the poles do not lost some what
of the magnetic property will be present by this motor can
produce its back emf at the time of starting

what is different between neutral and earth?

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what is demagnetising effect & crossmagnetising effect and how it is related to electrical system?is there any more effects are available or only these two??

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What technology is used in latest generators?

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why we decide alternating wave form in ac system and not in dc system

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why should series motor be started with load and shunt motor should be started without load??????

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can we check the resistance of earthing electrode while it is connected with the neutral of UPS system

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What is vacuum circuit breaker.define with cause and where be use it device?

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For single phase(phase to neutral) having potential difference 230.in three phase(phase to phase)we have 440V HOW...?

1 Answers  

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in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.

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what is the use of current transformer in power transformer secondary side.?its connectyed in WTI

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Do you know how to joint the H.T and L.T Cables?

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what will happen if OLR CT in all phases are short circuted

0 Answers   Indfrag Limited,

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