Answer / k.prakashchandra

The more the burden ,the less the accuracy

What is Rough Balance Busbar Protection

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can some one clearly explain why -48 volt DC use in telecom site????

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How many types of faults are there in 3 phase power system?

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what is the difference in using the 125% and the 250% factor of safety in calculating circuit breakers capacity for motors,which is more reliable to use the 125% or 250%??

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what is the pre charge circuit,what will be work which function it will be use plz tell me

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why transformers are sometimes kept on concrete benches..?

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In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.

3 Answers  

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what is different between phase and netural

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Dear sir/mam Iwant complete details of Naintenence of 33kv/433v Transformer having 1250 KVa

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how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

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Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

0 Answers   NHPC,

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I want to know which cable would be best to carry 125A current to a distance of 50m. Voltage is 3phase. Kindly share the formula with answer.

1 Answers   Medway Educational Consultant,

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