Answer / s pavan sudheer

copper losses vary with load. Copper loss is I^2 R loss, when we apply load aromatically the current will be increased so it is finalized that current drawing is directly proportional to copper losses.
   

Advantage of earthing transformer

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R=*¶ l/a

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How the neutral earthing is connected in DG alternator

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two 100W/230V bulb are connected in series. what would be the voltage drop across 1 bulb

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When is lag lead compensator is required?

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Consider a case that two 200 hp motors are connected to 500KVA transformer. For improving power factor can we add capacitors in common bus bars to motors. Or should we add capacitors for each individual motor?

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what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????

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Why rotating machines are not allowed to run near critical speed region?

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Why reverse power relay is used?

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why we use ac?why we use dc? why we we cannot use only ac/dc for all the applications?what happen if we use?

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What is vector group? What is meant by DYN11?Why is it needed?

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what is meant by directional earth fault and non directional earth fault? describe both.

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