Answer Posted / anand maurya

when phase and earth wire comes in contact , then b/w phase
and earth have zero resistanse due to this( R = V/I ) an
infinite current flow though it when an infinite current
flow losses is also became infinite due to heat wire will
be damage .

why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!

1818

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what is mean by PIR in circuitbreaker and give me detail of that?

3463

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hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

1947

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what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.

2134

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What are differences between Voltage, EMF & Potential difference ?

1908

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How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

2233

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How dia computation perfomed in cold rolling mills .

2997

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I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

1892

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what is the difference between electrical choke and electronic choke?

2478

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Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss

3222

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what is the transformer rush current?

2027

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how pt is using

1896

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What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

1815

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What do you mean by dependent and independent voltage sources?

995

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Why phase sequence must be same in any ht motor or generator circuit?if phase sequence doesn't same whatever will be affect on circuit?

2153

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