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What is the main cause of magnetism?
Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere
What type of fittings and electrical accessories can be install in radiation area ?
In Power cable specification what is U0/U and Um.
Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.
Give the topology of current amplifier with current shunt feedback?
what is transformor oil gread
Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?
how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)
how to calculate maximum current
what the principle of sincroscope?how it works?when it needed?
why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?
what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?
The specific heats of the gas at constant pressure and constant volume are respectively 1.0 kJ/kg K and 0.72 kJ/kg K; the value of R for the gas is
please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.