Answer / pithavapurvish

In analog system the magnitude of voltage or current is very
with time continuously .and in digital system the out put is
very in two stets one or zero if output is one then the
magnitude is at high position and if zero then the magnitude
oh output is zero the output can not change with time it
change insteniously

synchronous motor of 13.5MW having which type protection? and how to set relay?give me relay setting calculation for different protection for this motor assume efficiency,power factor and other term if neccecery

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how braking & making capacity of circuit breaker is calculated?

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WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

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We have one 500KVA transformer. We have tested REF relay and commissioned. After one and half year, due to some ground fault in one of the DB circuit Transformer tripped by REF relay. What will be cause and remedy. Please advise?

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how the magnetic flux is said to be rotating & alternating?

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how to put cable sizing and cable glands size for respective cable & Cable Lug size in a DB sectors???

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Calculation for the adequacy of 380 KVA neutral earth flat size

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Why we not use the impedance relay in protection of short transmission line ?

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what is meant by CT burden = 10 VA?

1 Answers  

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