Answer Posted / prashant singh

no a transformer cant develop 3 phase power through a
single source.because single pahse source con not generate
3 phase.

Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.

2102

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Can a generator runs after getting 1st stator earth fault.

1473

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What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

1829

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what is apparent poewr, reactive power, & active power?

2421

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What is current divider rule (cdr)?

1388

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How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

1667

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what is the meaning of 0.5ohm Resistance

1914

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What is acsr cable and where we use it?

1202

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at what base you will tell the direction of rotation of dc motors and generators?

1176

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plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

2353

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I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

2023

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what is the meaning of 5% droop or 7% droop in AVR?

2372

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What is a parabolic signal?

1209

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what is upper impedance and lower impedance of a distance relay

2081

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I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1723

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