i have one source transformer with the capacity of 50KVA, connected with two loads 10kw and second one is 15kw.. how can i calculate first load in KVA and second one in KVA .. because Kva rating, power factor rating of of transformer is different from the load… there must be some way to calculate load KVA rating and power factor….

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what happend if the protection ct is by mistake put instead of measuring ct & vice versa?

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is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

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what is the difference between inrush curent and jurk load.

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i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

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which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..

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Whether we used insulated line for 33KV supply. what we called it.

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Necessity of transformer earthing

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What is the required bending radius requied at the time of cable laying?

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please send me RRB electrical engineer previous year questions for Sr. Section Engineer

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why the generator will take 8 to 12 hours to start after it got interrupted due to technical problems in case of power plants.

1 Answers   NTPC,

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In a 3 phase system a neutral exists so that any unbalanced currents can flow through it towards earth.... but a phase demands a particular current as per the load attached to it....then where does the extra current come from the goes in the neutral??....I mean in an unbalanced system a phase demands a current as per its load attached....then where does the unbalanced current come from??

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