Answer Posted / hitesh

it is true ,commutator converts dc to ac because here we are
applying dc supply and dc has no frequency so it is not
possible production of flux so commutator is required to
convert dc to ac.

how many load we can take for lighting

2326

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what is the Transformer Impedence?How can calculate?

2166

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what is rating boiler

2051

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

2501

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how can decide the current rating of oltc

2464

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What are the various kind of cables used for transmission?

1146

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what is the breaking capacity and making capacity of circuit breaker and how

2178

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all interview questions with answers of ntpc (2000-2009

2269

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what is feeder bay?

1651

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Why two phase welding machine is used instead of three phase welding machine.

1999

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Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.

2080

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How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

2067

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Batteries. What is the difference between Lead and Nickel batteries ?

2258

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I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.

1883

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On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

4424

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