Answer / thilaksugumar

hpcl written w'll b postponed to March 2 nd. anyone have
model qn papers.pl send my mail id
deepanasrisugumar@yahoo.co.in.

How to calculate the current rating of power cables ?

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WHAT IS PRINCIPLE OF TRANSFORMER

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Why carbon brush used in dc motor also why its not used in ac motor?

2 Answers   RRB,

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what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?

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some practicle study shows that the reactive power at the receiving end is not equal to the reactive power at the sending end.But according to theory the reactive power is exchanged by different parts of the network – capacitors and reactors permanently, but is never consumed or produced. Then Where that reacrtive power loss occuring?is there any formula to calculate reactive power loss?

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describe the Tranformer testing procedure

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In the solution of load flow eqation, Newton raphson method is superior to the gauss siedal method because (a)the time taken to perform one iteration in the NR method is less when compared to GS method (b)the number of iterations required in the NR method is more compared to that in the GS method (c)the number of iterations required is dependant on the size of the system in the NR method (d)convergence characteristics of the NR mehod are not affected by the selection of the slack bus

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Is there any question in the name of Static Switch in UPS??

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what is the use of vcb & isolator in substation?

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how the B-H loop obtain under the static condition

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I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

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how to calculate micom relay earth falt time and current sertting

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