what is the reason the main breaker is trip during the motor is running? (some time the breaker is not trip)
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what is the difference between ac and electric
can we check the resistance of earthing electrode while it is connected with the neutral of UPS system
Why star delta starter is preferred with induction motor?
What is the stander resistance value between the neutral and earth?
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There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
what is meant by excitation current & armature current ? where its produce & how we can calculate ?
why do we use magnetic contactors ?circuit breakers are not enough?
what is VSWR?
why should the primary of transformer be connected in delta in a heat run test?
in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.
what is auto re-closer?
what are the protection for DG set and why?
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